CN100562791C - Liquid crystal display and liquid crystal driving method - Google Patents

Abstract

The invention discloses a kind of LCD and LCD drive method, this LCD comprises a plurality of pixel electrodes, gate line and a plurality of data line.First pixel electrode has the first main electrode subregion and wants the electrode subregion for the first time, wherein the first main electrode subregion and the first time wants the electrode subregion to separate; Second pixel electrode has the second main electrode subregion and wants the electrode subregion for the second time, wherein the second main electrode subregion and the second time wants the electrode subregion to separate.First data line is coupled to wants the electrode subregion for the first time, and is covered by first pixel electrode.Second data line is coupled to the first main electrode subregion, and is covered by second pixel electrode.The 3rd data line is coupled to the second main electrode subregion, and is covered by second pixel electrode.Gate line is coupled to first pixel electrode and second pixel electrode.

Description

Liquid crystal display and liquid crystal driving method

technical field

The present invention relates to a liquid crystal display; in particular to a design method for a wide viewing angle liquid crystal panel display using a multi-domain vertical alignment technology (Multi-domain Vertical Alignment, MVA).

Background technique

Liquid crystal displays (LCDs) have many advantages, such as small size, light weight, low power consumption, and the like. Therefore, LCDs have been widely used in electronic products such as portable computers and mobile phones, that is, LCDs have gradually replaced traditional cold cathode ray tubes (CRTs) and become the mainstream of displays. However, the biggest disadvantage of traditional LCD is its narrow viewing angle. The prior art has proposed many methods for improving the LCD viewing angle characteristics; for example, in the multi-domain vertical alignment technology (Multi-domain Vertical Alignment, MVA) familiar to those skilled in the art, each pixel electrode is divided into two electrode sub-regions, and in the low gray At the same time, two data signals of different sizes are provided to be transmitted to each electrode sub-region through the data line, as shown in FIG. 1 .

FIG. 1 shows a schematic diagram of an equivalent circuit of an existing liquid crystal display panel (LCD panel for short) and its peripheral driving circuit. As shown in the figure, the LCD panel 1 is formed by criss-crossing data lines (indicated by d11, d12, d21, d22, ... dm1, dm2) and gate lines (indicated by g1, g2, ... gn) , each set of interleaved two data lines and gate lines can be used to control a display unit (display unit), for example, data lines d11 and d12 and gate line g1 can be used to control a display that is dominated by pixel electrodes 30 unit. As shown in the figure, the equivalent circuit of the display unit mainly includes pixel electrodes (30, 40, 50, ...), thin film transistors (q111~q1m2, q211~q2m2,..., qn11~qnm2) for controlling data entry, and storage capacitors (c111~c1m2, c211~c2m2, ..., cn11~cnm2). The gate and drain of the thin film transistor are respectively connected to the gate line (g1~gn) and the data line (d11~dm2), through the scan signal on the gate line (g1~gn), the same row can be turned on and off (also That is, all thin film transistors on the same scan line) are used to control whether the data signals on the data lines (d11˜dm2) can be written into the corresponding pixel electrodes.

In addition, FIG. 1 also shows a driving circuit portion of the LCD panel 1 . A gate driver (gate driver) 10 sends out scanning signals on each gate line g1, g2, . . . , gn according to a predetermined scanning sequence. When a certain gate line is loaded with a scan signal, the thin film transistors in all display units on the same column or on the same scan line will be turned on. When a certain scan line is selected, the data driver 20 sends corresponding data signals to the m display units in the column via the data lines d11, d12, . . . dm2 according to the image data to be displayed. When the gate driver 10 completes the scanning operation of all n columns of scanning lines, it means that the display operation of a single frame is completed. Therefore, the purpose of continuously displaying images can be achieved by repeatedly scanning each scanning line and sending out data signals.

FIG. 2 shows a circuit structure diagram of the pixel electrode 40 . As shown in FIG. 2 , there are a pair of data lines (for example, data lines d21 and d22 ) on both sides of each pixel electrode 40 , and each pixel electrode 40 includes a pair of electrode sub-regions 401 and 402 . The electrode sub-regions 401 and 402 have switching devices q121 and q122 electrically connected to the corresponding gate line g1 and data lines d21 and d22 respectively. In order to reduce the coupling equivalent capacitance CP1 formed between the data line d21 and the electrode sub-region 401 and the coupling equivalent capacitance CP2 formed between the data line d22 and the electrode sub-region 402, the traditional processing method is to increase the data line The distance from the electrode sub-area in the P1 direction (that is, the horizontal direction). Generally speaking, the distance between the data line d21 and the electrode sub-region 401 and between the data line d22 and the electrode sub-region 402 in the P1 direction (ie, the horizontal direction) must be greater than 7um to effectively reduce the effect of the coupling equivalent capacitance. However, this move will reduce the aperture ratio. Since the aperture ratio refers to the light transmittance ratio, that is, the effective area of each pixel that can transmit light divided by the total area of the pixel, a smaller aperture ratio will cause the overall picture to become darker.

In addition, vertical crosstalk is another important factor affecting the image quality of the liquid crystal display, that is, the capacitive coupling effect generated by the data lines to the pixel electrodes leads to image distortion of the liquid crystal display. Therefore, it is necessary to continuously improve the liquid crystal display technology in order to develop a liquid crystal display with high aperture ratio, large viewing angle and reduced vertical crosstalk.

Contents of the invention

The technical problem to be solved by the present invention is to provide a liquid crystal display with high aperture ratio, large viewing angle and reduced vertical crosstalk and a liquid crystal driving method.

To achieve the above object, the liquid crystal display provided by the present invention includes: a first pixel electrode having a first main electrode sub-region and a first secondary electrode sub-region, wherein the first main electrode sub-region and the first The secondary electrode sub-region is separated; a second pixel electrode has a second main electrode sub-region and a second secondary electrode sub-region, wherein the second main electrode sub-region and the second secondary electrode sub-region are separated, the The second pixel electrode is adjacent to the first pixel electrode; a first data line is coupled to the first secondary electrode sub-region and is covered by the first pixel electrode; a second data line is coupled to the first pixel electrode a main electrode sub-region, and covered by the second pixel electrode; a third data line, coupled to the second main electrode sub-region, and covered by the second pixel electrode; a fourth data line, coupled to the the second sub-electrode sub-region; and a gate line coupled to the first pixel electrode and the second pixel electrode; an insulating layer located between the first data line and the first pixel electrode, Between the second data line and the second pixel electrode, and between the third data line and the second pixel electrode; a first switch, coupled to the first secondary electrode sub-region, the first Between the data line and the gate line; a second switch, coupled between the first main electrode sub-region, the second data line and the gate line; a third switch, coupled to the second The main electrode sub-region is between the third data line and the gate line; a fourth switch is coupled between the second sub-electrode sub-region, the fourth data line and the gate line.

In addition, in order to achieve the above object, the present invention provides a liquid crystal display, comprising a first pixel electrode, which is divided into a first main electrode sub-region and a first sub-electrode sub-region, wherein the first main electrode sub-region and The first sub-region of the secondary electrode is separated; a second pixel electrode, adjacent to the first pixel electrode, is divided into a second main electrode sub-region and a second sub-electrode sub-region, wherein the second main electrode sub-region area and the second sub-electrode sub-area are separated; a third pixel electrode is divided into a third main electrode sub-area and a third sub-electrode sub-area, wherein the third main electrode sub-area and the third sub-electrode The sub-regions are separated; a first data line is coupled to the first secondary electrode sub-region and is covered by the first pixel electrode; a second data line is coupled to the first main electrode sub-region and is covered by the first pixel electrode Covered by the second pixel electrode; a third data line coupled to the second main electrode sub-region and covered by the second pixel electrode; a fourth data line coupled to the second sub-electrode sub-region , and covered by the third pixel electrode; a fifth data line, coupled to the third sub-electrode sub-region of the third electrode, and covered by the third pixel electrode; a sixth data line, coupled to The third main electrode sub-region of the third electrode; a gate line coupled to the first pixel electrode, the second pixel electrode and the third pixel electrode; a gate controller for providing a gate control signal to the gate line; a data driver, coupled to the first data line, the second data line, the third data line, the fourth data line, the fifth data line, the sixth data line and an insulating layer located between the first data line and the first pixel electrode, between the second data line and the second pixel electrode, and between the third data line and the second pixel electrode, Between the fourth data line and the third pixel electrode, and between the fifth data line and the third pixel electrode, the insulating layer is made of organic material.

In addition, in order to achieve the above object, the present invention provides a driving method of a liquid crystal display, which is suitable for a multi-domain vertical alignment display, and the multi-domain vertical alignment display includes a first data line, a second data line, a third data line line, a fourth data line, a gate line, an insulating layer, a first pixel electrode and a second pixel electrode; the first pixel electrode has a first main electrode sub-region and a first sub-electrode sub-region area, wherein the first main electrode sub-area and the first sub-electrode sub-area are separated; the second pixel electrode is adjacent to the first pixel electrode and has a second main electrode sub-area and a second sub-electrode sub-region, wherein the second main electrode sub-region is separated from the second sub-electrode sub-region; the first data line is coupled to the first sub-electrode sub-region and is covered by the first pixel electrode; the second data line line coupled to the first main electrode sub-region and covered by the second pixel electrode, the third data line coupled to the second main electrode sub-region and covered by the second pixel electrode, the fourth data line Coupled to the second sub-electrode sub-region, covered by a third pixel electrode; the gate line is coupled to the first pixel electrode, the second pixel electrode, and the third pixel electrode, and the insulating layer is located on the Between the first data line and the first pixel electrode, between the second data line and the second pixel electrode, and between the third data line and the second pixel electrode; the aforementioned driving method includes a A first data signal is transmitted to the first data line; and a second data signal is transmitted to the second data line, so that the first data signal and the second data signal have different electrical properties relative to a reference level Polarity: transmitting a third data signal to the third data line, the third data signal and the second data signal have different electrical polarities relative to the reference level.

In summary, the liquid crystal display provided by the present invention has a high aperture ratio, a large viewing angle and can reduce vertical crosstalk.

Description of drawings

FIG. 1 shows a schematic diagram of an equivalent circuit of an existing liquid crystal display panel and its peripheral driving circuit;

Fig. 2 shows the circuit structure diagram of the existing display unit;

FIG. 3 shows an equivalent circuit diagram of a pixel electrode and its periphery shown in an embodiment of the present invention;

FIG. 4 shows an equivalent circuit diagram of a pixel electrode and its periphery shown in an embodiment of the present invention;

FIG. 5 shows an equivalent circuit diagram of a pixel electrode and its periphery shown in an embodiment of the present invention;

FIG. 6A shows an equivalent circuit diagram of a pixel electrode and its periphery shown in an embodiment of the present invention;

FIG. 6B shows an equivalent circuit diagram of a pixel electrode and its periphery shown in an embodiment of the present invention;

FIG. 7 is a schematic diagram of an equivalent circuit of a liquid crystal display panel and its peripheral driving circuit;

FIG. 8 is a schematic diagram of an equivalent circuit of a liquid crystal display panel and its peripheral driving circuit.

Among them, reference signs:

10: Gate driver 20: Data signal driver

30, 40, 50, 60, 70, 80, 62, 72, 82: pixel electrode

401, 601, 701, 801, 621, 721, 821: secondary electrode sub-areas

402, 602, 702, 802, 622, 722, 822: main electrode sub-areas

c111, c112, c121, c122, c131, c132, c141, c1m1, c1m2, c211, c212, c221, c222, c231, c232, c241, c2m1, c2m2, cn11, cn12, cn21, cn22, cn31, cn32, cn41, cnm1, cnm2: storage capacitor

CP1, CP2, CP51, CP61, CP62, CP71, CP72, CP81: equivalent coupling capacitance

D11, D12, D21, D22, D51, D61, D62, D71, D72, D81, D82, D92, d11, d12, d21, d22, d31, d32, d41, dm1, dm2: data line

G1, G2, Gn, g1, g2, gn: Gate lines

Q161, Q162, Q171, Q172, Q181, Q182, q111, q112, q121, q122, q131, q132, q141, q1m1, q1m2, q211, q212, q221, q222, q231, q232, q241, q2m1, q2m2, qn11, qn12, qn21, qn22, qn31, qn32, qn41, qnm1, qnm2: thin film transistor switches

P1: horizontal direction P2: vertical direction "+": positive polarity

S61, S62, S71, S72, S81, S82: data signal

"-": Negative polarity "H": High voltage "L": Low voltage

Detailed ways

In order to make the above-mentioned purpose, features and advantages of the present invention more obvious and easy to understand, the preferred embodiments are specifically cited below, together with the accompanying drawings, and are described in detail as follows:

FIG. 3 illustrates an embodiment of the liquid crystal display of the present invention. For simplicity of illustration, FIG. 3 only shows the pixel electrodes 60 , 70 and 80 . The first pixel electrode 60 has a first main electrode sub-region 602 and a first sub-electrode sub-region 601 , wherein the first main electrode sub-region 602 and the first sub-electrode sub-region 601 are separated. The second pixel electrode 70 is adjacent to the first pixel electrode 60, and has a second main electrode sub-region 702 and a second secondary electrode sub-region 701, wherein the second main electrode sub-region 702 and the second secondary electrode sub-region 701 separate. Likewise, the third pixel electrode 80 has a third main electrode sub-region 802 and a third sub-electrode sub-region 801 which are separated.

The gate line G1 is coupled to the first pixel electrode 60 , the second pixel electrode 70 and the third pixel electrode 80 , wherein the second pixel electrode 70 is adjacent to the first pixel electrode 60 and the third pixel electrode 80 respectively, and is located on the second pixel electrode 60 . Between the first pixel electrode 60 and the third pixel electrode 80 .

As shown in FIG. 3 , the first data line D61 is coupled to the first secondary electrode sub-region 601 and covered by the first pixel electrode 60 . Here, covering means that the vertical projections of the two overlap each other; for example, the vertical projection of the first data line D61 and the vertical projection of the first pixel electrode 60 overlap each other. The second data line D62 is coupled to the first main electrode sub-region 602 and is covered by the second pixel electrode 70; the third data line D72 is coupled to the second main electrode sub-region 702 and is covered by the second pixel electrode 70; The fourth data line D71 is coupled to the second sub-electrode sub-region 701 and is covered by the third pixel electrode 80; the fifth data line D81 is coupled to the third sub-electrode sub-region 801 and is covered by the third pixel electrode 80 Overlay; the sixth data line D82 is coupled to the third main electrode sub-region 802 .

The first switch Q161 is coupled between the first secondary electrode sub-region 601, the first data line D61 and the gate line G1. The second switch Q162 is coupled between the first main electrode sub-region 602 , the second data line D62 and the gate line G1 . The third switch Q172 is coupled between the second main electrode sub-region 702 , the third data line D72 and the gate line G1 . The fourth switch Q171 is coupled between the second secondary electrode sub-region 701 , the fourth data line D71 and the gate line G1. The fifth switch Q181 is coupled between the secondary electrode sub-region 801 of the third pixel, the fifth data line D81 and the gate line G1. The sixth switch Q182 is coupled between the third main electrode sub-region 802 , the sixth data line D82 and the gate line G1 . According to an embodiment of the present invention, the first switch Q161, the second switch Q162, the third switch Q172, the fourth switch Q171, the fifth switch Q181 and the sixth switch Q182 may be thin film transistors.

As far as the second pixel electrode 70 is concerned, its corresponding data lines are D72 and D71. In order to reduce the distance between the data line and the electrode sub-region in the horizontal direction, according to an embodiment of the present invention, the data line D72 can be placed in the second pixel electrode 70. The bottom of the second pixel electrode 70 is covered by the second pixel electrode 70, and D71 is placed under the third pixel electrode 80 and covered by the third pixel electrode 80. This design can avoid the direction of P1 (ie Horizontal direction) increases the distance between the data line and the electrode sub-region, thereby obtaining a better aperture ratio.

In addition, as shown in Figure 4, L1 represents the metal layer of the data line, L2 represents the traditional dielectric layer, L3 represents the insulating layer of organic materials, and L4 represents the transparent electrode layer ITO (Indium Tin Oxide; ITO). The data lines D62 and D72 are covered by the second pixel electrode 70. Here, coverage means that when the data lines D62 and D72 are located below the pixel electrode 70 (Indium Tin Oxide; ITO), the distance between the data lines D62 and D72 is in the P1 direction ( That is, the horizontal direction) is smaller than the width of the second pixel electrode 70 . As far as the second pixel electrode 70 is concerned, there are coupling equivalent capacitances CP62 and CP72 in the P2 direction (ie, the vertical direction). In order to reduce the vertical crosstalk generated by the coupling equivalent capacitance, according to an embodiment of the present invention, an insulating layer L3 is additionally provided between the metal layer of the data line and the pixel electrode ITO, outside the dielectric layer L2, in the direction of P2 Up (that is, the vertical direction) increases its distance. The insulation layer L3 is made of organic material, and its thickness can be adjusted from 2 nm to 3 nm or above.

In addition, according to the embodiments of the present invention, the polarity change of the control data signal can be used to further reduce the vertical crosstalk generated by coupling the equivalent capacitance in the vertical direction. As shown in FIG. 5, according to the embodiment of the present invention, the first data signal S61 of positive polarity (indicated by the symbol "+") is provided to the first secondary electrode sub-region 601 by the first data line D61, and the second data The line D62 provides the second data signal S62 of negative polarity (indicated by the symbol "-") to the first main electrode sub-region 602. Here, the positive polarity (indicated by the symbol "+") and the negative polarity (indicated by the symbol "-") ) means that the first data signal S61 and the second data signal S62 have different electrical polarities with respect to a reference level (Vcom). For example, when the voltage level of the data signal is higher than the reference level (Vcom), it is called positive polarity (indicated by the symbol "+"); conversely, when the voltage level of the data signal is lower than the reference level (Vcom) , it is called negative polarity (indicated by the symbol "-"). The third data line D72 provides a third data signal S72 of positive polarity (indicated by the symbol "+") to the second main electrode sub-region 702, and a negative polarity (indicated by the symbol "-") is provided by the fourth data line D71. ) of the fourth data signal S71 to the second sub-electrode sub-region 701. In this way, as far as the second pixel electrode 70 is concerned, there are data lines D62 and D72 below it. The data line D62 will couple a negative polarity (indicated by the symbol "-") voltage level to the second pixel electrode 70, and the data line D72 will couple a positive polarity (indicated by the symbol "+") voltage level to the second pixel electrode 70. The pixel electrode 70 causes the positive and negative coupling voltages received by the second pixel electrode 70 to cancel each other, so that the image of the vertical crosstalk is improved.

As mentioned above, the industry has proposed a multi-domain vertical alignment technology (Multi-domain Vertical Alignment, MVA), which is prone to color shift at low gray levels, so each pixel electrode is divided into two electrode sub-regions, and then two electrode sub-regions are provided. Data signals of different sizes are transmitted to the two electrode sub-regions through the data lines, so that the problem of color shift can be improved. On the other hand, when displaying high grayscale, the color shift is not serious, so data signals with equal or unequal magnitudes can be transmitted to the two electrode sub-regions according to requirements.

Therefore, according to the embodiment of the present invention, the magnitude change of the control data signal can be used to further reduce the vertical crosstalk generated by coupling the equivalent capacitance in the vertical direction. As shown in FIG. 6A , when the gray scale displayed by the first pixel electrode 60 is lower than a predetermined gray scale, here, a predetermined gray scale refers to a critical gray scale for whether a color shift occurs. For example, if the displayed gray scale is lower than 128, there will be obvious color cast; on the contrary, when the displayed gray scale is higher than 128, and the color cast is not serious, then 128 will be regarded as "established". Grayscale". The difference between the first data signal S61 and the reference level (Vcom) is not greater than the difference between the second data signal S62 and the reference level (Vcom). That is to say, a data signal S61 of a low voltage level (represented by a symbol "L") is provided to the first secondary electrode sub-region 601, and a data signal S62 of a high voltage level (represented by a symbol "H") is provided to the first secondary electrode sub-region 601. A main electrode sub-region 602 . In this way, as far as the first pixel electrode 60 is concerned, the data line D61 will provide a data signal S61 of a low voltage level (indicated by a symbol "L") to the first secondary electrode sub-region 601, providing a high voltage level The standard (indicated by symbol “H”) data signal S62 is sent to the second main electrode sub-region 602 . Therefore, the problem of color shift caused by the low gray scale of the first pixel 60 can be improved. The reason is as mentioned above, by providing two data signals with different sizes to be transmitted to the same pixel electrode, the problem of color shift can be improved.

When the gray scale displayed by the second pixel electrode 70 is lower than a predetermined gray scale, the difference between the fourth data signal S71 and the reference level (Vcom) is not greater than the difference between the third data signal S72 and the reference level (Vcom). difference. That is, a data signal S71 of a low voltage level (indicated by a symbol “L”) is provided to the second secondary electrode sub-region 701 , and a data signal S72 of a high voltage level is provided to the second main electrode sub-region 702 . Then the color shift problem of the second pixel 70 due to the low gray scale can be improved. In this way, as far as the second pixel electrode 70 is concerned, there are data lines D62 and D72 below it. D62 will couple a negative high voltage level (indicated by the symbol "H") S62 to the second pixel electrode 70, and D72 will couple a positive high voltage level S72 to the second pixel electrode 70, resulting in the second pixel The coupling voltages received by the electrodes 70 are all high voltages and the positive and negative phases are offset, so that the image of the vertical crosstalk is improved.

When the gray scale displayed by the third pixel electrode 80 is lower than a predetermined gray scale, the difference between the fifth data signal S81 and the reference level (Vcom) is not greater than the difference between the sixth data signal S82 and the reference level (Vcom ) difference. That is, a data signal S81 of a low voltage level is provided to the third secondary electrode sub-region 801 and a data signal S82 of a high voltage level is provided to the third main electrode sub-region 802 . Therefore, the problem of color shift caused by the low gray scale of the third pixel 80 can be improved. In this way, as far as the third pixel electrode 80 is concerned, there are data lines D71 and D81 below it. The fourth data line D71 will couple a negative low voltage level S71 to the third pixel electrode 80, and the fifth data line D81 will couple a positive low voltage level S81 to the third pixel electrode 80, resulting in the third pixel The coupling voltages received by the electrodes 80 are all low voltages and the positive and negative phases are offset, so that the image of the vertical crosstalk is improved.

According to the embodiments of the present invention, the operation performance of the data driver can be improved by adjusting the connection relationship between the data lines and the pixel electrodes, so that the data driver only needs to output the signal in the form of row inversion to obtain a high-quality picture with dot inversion. As shown in FIG. 6B, the first gate line (or an odd number of gate lines) is connected to the pixel electrodes 60, 70, 80, and the second gate line (or an even number of gate lines) is connected to the pixel electrodes 62, 72, 82, the first data line is connected to the first secondary electrode sub-region 601 and the fourth main electrode sub-region 622; the second data line is coupled to the first main electrode sub-region and the fourth secondary electrode sub-region ; In this way, when the data driver outputs a signal in the form of row inversion, within the same frame (frame), the first data line maintains a negative polarity, which means that the first primary data line connected to the first gate line The electrode sub-region 601 and the fourth main electrode sub-region 622 connected to the second gate line have a negative polarity; the second data line D62 maintains a positive polarity, which means that the first main electrode connected to the first gate line The fourth sub-electrode sub-region 621 connected to the sub-region 602 and the second gate line has a negative polarity, thus forming a dot-inverted picture quality.

FIG. 7 shows a schematic diagram of a liquid crystal display panel and its peripheral driving circuit according to an embodiment of the invention. In addition, as shown in FIG. 7 , according to an embodiment of the present invention, a gate driver (gated driver) 10 is further provided. The gate driver 10 sends out scanning signals on each gate line G1, G2, ..., Gn according to a predetermined scanning sequence. And the data driver 20 sends corresponding data signals to the m display units in the column through the data lines D11 , D12 , . . . Dm2 according to the image data to be displayed. Each set of staggered two data lines and gate lines can be used to control a pixel electrode to form a basic display unit, for example, data lines D61 and D62 and gate line G1 can be used to control the pixel electrode 60, data line D71 The data lines D72 and the gate line G1 can be used to control the pixel electrode 70 , and the data lines D81 and D82 and the gate line G1 can be used to control the pixel electrode 80 . In order to increase the aperture ratio of each display unit, the pixel electrodes 60 , 70 , and 80 are extended to the left to enlarge and cover the data lines D61 , D51 , D62 , D72 , D71 and D81 .

When displaying a low-gray-scale picture, taking the pixel electrodes 60, 70, and 80 as an example, they are respectively supplied to the data lines D61, D51, D62, D72, D71, and D81 with various polarities as described in the previous embodiment, that is, At the same time, it can improve the problems of large-screen role deviation and vertical crosstalk.

FIG. 8 shows a schematic diagram of a liquid crystal display panel and its peripheral driving circuit according to another embodiment of the present invention. The embodiment shown in FIG. 8 has substantially the same structure as the embodiment disclosed in FIG. D71 and D81 can also increase the aperture ratio of each display unit.

Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding Changes and deformations should belong to the scope of protection of the appended claims of the present invention.

Claims (16)

1. A liquid crystal display, characterized in that, comprising: a first pixel electrode having a first main electrode sub-region and a first secondary electrode sub-region, wherein the first main electrode sub-region and the first secondary electrode sub-region are separated; A second pixel electrode, adjacent to the first pixel electrode, has a second main electrode sub-region and a second sub-electrode sub-region, wherein the second main electrode sub-region and the second sub-electrode sub-region are separated ; a first data line coupled to the first secondary electrode sub-region and covered by the first pixel electrode; a second data line coupled to the first main electrode sub-region and covered by the second pixel electrode; a third data line coupled to the second main electrode sub-region and covered by the second pixel electrode; a fourth data line coupled to the second sub-electrode sub-region and covered by a third pixel electrode; a gate line, coupled to the first pixel electrode and the second pixel electrode; an insulating layer located between the first data line and the first pixel electrode, between the second data line and the second pixel electrode, and between the third data line and the second pixel electrode; a first switch, coupled between the first secondary electrode sub-region, the first data line and the gate line; a second switch, coupled between the first main electrode sub-region, the second data line and the gate line; a third switch coupled between the second main electrode sub-region, the third data line and the gate line; and A fourth switch is coupled between the second sub-electrode sub-region, the fourth data line and the gate line. 2. The liquid crystal display according to claim 1, wherein the first switch, the second switch, the third switch and the fourth switch are thin film transistors. 3. The liquid crystal display according to claim 1, further comprising: The third pixel electrode is adjacent to the second pixel electrode, so that the second pixel electrode is located between the first and third pixel electrodes, and has a third main electrode sub-region and a third sub-electrode sub-region. the third primary electrode sub-region and the third secondary electrode sub-region are separated; a fifth data line coupled to the third sub-electrode sub-region and covered by the third pixel electrode; a sixth data line coupled to the third main electrode sub-region; a fifth switch coupled between the secondary electrode sub-region of the third pixel electrode, the fifth data line and the gate line; and A sixth switch, coupled between the main electrode sub-region of the third pixel electrode, the sixth data line and the gate line. 4. The liquid crystal display according to claim 1, wherein the first data line provides a first data signal to the first secondary electrode sub-region, and the second data line provides a second data signal to the The first main electrode sub-region, and the first data signal and the second data signal have different electrical polarities relative to a reference level, the third data line provides a third data signal to the second main electrode In the sub-region, the third data signal and the second data signal have different electrical polarities relative to the reference level. 5. The liquid crystal display according to claim 4, wherein the fourth data line provides a fourth data signal to the second secondary electrode sub-region, and the third data signal is opposite to the fourth data signal have different electrical polarities at the reference level. 6. The liquid crystal display according to claim 5, wherein when the gray scale displayed by the first pixel electrode is lower than a predetermined gray scale, the difference between the first data signal and the reference level is not greater than the The difference between the second data signal and the reference level, the predetermined gray level is the critical gray level for whether color shift occurs. 7. The liquid crystal display according to claim 5, wherein when the gray scale displayed by the second pixel electrode is lower than a predetermined gray scale, the difference between the fourth data signal and the reference level is not greater than the The difference between the third data signal and the reference level, the predetermined gray level is the critical gray level for whether color shift occurs. 8. The liquid crystal display according to claim 1, further comprising: the insulation layer is made of organic material. 9. The liquid crystal display according to claim 1, further comprising: The thickness of the insulating layer ranges from 2 nm to 3 nm. 10. The liquid crystal display according to claim 1, further comprising: a fourth pixel electrode having a fourth main electrode sub-region and a fourth sub-electrode sub-region separated from each other; a fifth pixel electrode having a fifth main electrode sub-region and a fifth sub-electrode sub-region separated from each other; A second gate line, coupled to the fourth pixel electrode and the fifth pixel electrode, the first data line, coupled to the first secondary electrode sub-region and the fourth main electrode sub-region, and is The first pixel electrode and the fourth pixel electrode are covered; the second data line is coupled to the first main electrode sub-region and the fourth sub-electrode sub-region, and is covered by the second pixel electrode and the fifth pixel electrode covering; the third data line is coupled to the second main electrode sub-region and the fifth secondary electrode sub-region, and is covered by the second pixel electrode and the fifth pixel electrode; the fourth data line is coupled to In the second secondary electrode sub-region and the fifth main electrode sub-region, the insulating layer is also located between the first data line and the fourth pixel electrode, between the second data line and the fifth pixel electrode , and between the third data line and the fifth pixel electrode. 11. A liquid crystal display, characterized in that it comprises: a first pixel electrode is divided into a first main electrode sub-region and a first secondary electrode sub-region, the first main electrode sub-region and the first secondary electrode sub-region are separated; a second pixel electrode, adjacent to the first pixel electrode, is divided into a second main electrode sub-region and a second sub-electrode sub-region, the second main electrode sub-region and the second sub-electrode sub-region are separated ; a third pixel electrode divided into a third main electrode sub-region and a third sub-electrode sub-region, the third main electrode sub-region and the third sub-electrode sub-region separated; a first data line coupled to the first secondary electrode sub-region and covered by the first pixel electrode; a second data line coupled to the first main electrode sub-region and covered by the second pixel electrode; a third data line coupled to the second main electrode sub-region and covered by the second pixel electrode; a fourth data line coupled to the second sub-electrode sub-region and covered by the third pixel electrode; a fifth data line coupled to the third sub-electrode sub-region of the third pixel electrode and covered by the third pixel electrode; a sixth data line coupled to the third main electrode sub-region of the third pixel electrode; a gate line, coupled to the first pixel electrode, the second pixel electrode and the third pixel electrode; a gate controller for providing a gate control signal to the gate line; a data driver, coupled to the first data line, the second data line, the third data line, the fourth data line, the fifth data line, and the sixth data line; and An insulating layer, located between the first data line and the first pixel electrode, between the second data line and the second pixel electrode, between the third data line and the second pixel electrode, the first Between the fourth data line and the third pixel electrode, and between the fifth data line and the third pixel electrode, the insulation layer is made of organic material. 12. The liquid crystal display according to claim 11, wherein the first data line provides a first data signal to the first secondary electrode sub-region, and the second data line provides a second data signal to the The first main electrode sub-region, and the first data signal and the second data signal have different electrical polarities relative to a reference level, the third data line provides a third data signal to the second main electrode In the sub-region, the third data signal and the second data signal have different electrical polarities relative to the reference level. 13. The liquid crystal display according to claim 11, wherein the fourth data line provides a fourth data signal to the second secondary electrode sub-region, and the third data signal is opposite to the fourth data signal have different electrical polarities at a reference level. 14. A method for driving a liquid crystal display, characterized in that the display comprises a first data line, a second data line, a third data line, a fourth data line, a gate line, an insulating layer, a first pixel electrode and a second pixel electrode; The first pixel electrode has a first main electrode sub-region and a first secondary electrode sub-region, wherein the first main electrode sub-region and the first secondary electrode sub-region are separated; The second pixel electrode is adjacent to the first pixel electrode and has a second main electrode sub-region and a second sub-electrode sub-region, wherein the second main electrode sub-region and the second sub-electrode sub-region are separated; The first data line is coupled to the first secondary electrode sub-region and covered by the first pixel electrode, the second data line is coupled to the first main electrode sub-region and is covered by the second pixel electrode, The third data line is coupled to the second main electrode sub-region and is covered by the second pixel electrode, and the fourth data line is coupled to the second sub-electrode sub-region and is covered by a third pixel electrode; The gate line is coupled to the first pixel electrode, the second pixel electrode, and the third pixel electrode, the insulating layer is located between the first data line and the first pixel electrode, and is located between the second data line and the third pixel electrode. between the second pixel electrodes, and between the third data line and the second pixel electrodes; The driver method includes: transmitting a first data signal to the first data line; transmitting a second data signal to the second data line such that the first data signal and the second data signal have different electrical polarities relative to a reference level; A third data signal is transmitted to the third data line, and the third data signal and the second data signal have different electrical polarities relative to the reference level. 15. The driving method according to claim 14, further comprising: transmitting a fourth data signal to the fourth data line, when the gray scale displayed by the second pixel electrode is lower than a predetermined gray scale , the difference between the fourth data signal and the reference level is not greater than the difference between the third data signal and the reference level, and the predetermined gray scale is a critical gray scale for whether color shift occurs. 16. The driving method according to claim 14, characterized in that, when the grayscale displayed by the third pixel electrode is lower than a predetermined grayscale, further comprising generating a fifth data signal to transmit a fifth data signal Line, which transmits a sixth data signal to a sixth data line, the fifth data line is coupled to the sub-electrode sub-region of the third pixel electrode, and is covered by the third pixel electrode, the sixth data line Coupled to the main electrode sub-region of the third pixel electrode, the difference between the fifth data signal and the reference level is not greater than the difference between the sixth data signal and the reference level, and the predetermined gray scale is whether color shift occurs The critical gray level of the situation.

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