TWI334502B - Va lcd device and a pixel circuit thereof - Google Patents

Description

1334502 IX. Description of the Invention: The present invention relates to a liquid crystal display device, and more particularly to a vertical alignment type liquid crystal display device and a pixel unit circuit thereof. [Prior Art] Two common liquid crystal driving methods include Twisted Nematic (TN) mode and Vertically-aligned (VA).

10 15

20 mode. When the TN mode is used to drive the liquid crystal, the liquid crystal of the liquid crystal display does not rotate without any electric field, so that the light source of the backlight module passes through the liquid crystal and the polarizing plate, thereby causing the display to display an all-white surface. Generally referred to as ''Normally White'.) The related art of TN liquid crystal displays has been significantly improved in recent years, and the contrast and color saturation provided by TN liquid crystal displays are superior to those of conventional displays (for example, CRT displays). However, the TN liquid crystal display has a key disadvantage, that is, the viewing angle range of the TN liquid crystal display is relatively narrow, which limits its application. When the VA mode is used to drive the liquid crystal, the liquid crystal of the liquid crystal display does not add any electric field. Under the LCD, the liquid crystal will not rotate, and the light source of the backlight module will be blocked by the liquid crystal without passing through the liquid crystal and the polarizing plate. The display will show a black surface, which is generally called "NormallyBlack". When a preset voltage is supplied, the liquid crystal molecules are arranged in a horizontal direction, and the display will appear in an all white plane. 5 The backbone 2 is made of a liquid crystal display with a higher contrast ratio than the TM liquid crystal. In addition, the response of the VA liquid crystal display is also faster, and the white screen and the black enamel surface have better wide-spectrum display. The VA liquid crystal display is a new type of liquid day and day benefit that is currently being exposed. However, the Va liquid θ bottle; the award 4 m society M ′ ·, the staff will not be able to cause uneven brightness in various viewing angles due to the different double-pulse characteristics of each liquid crystal. Figure 1 shows the conventional multi-region vertical alignment ( MUhi-D〇main Vertical

Ahgnment, MVA) Schematic diagram of the tone curve of a liquid crystal display device, wherein D1 is a tone curve of a conventional multi-region vertical alignment (MVA) liquid crystal display device, which is an ideal tone curve. Comparing the tone curve m and the tone curve n' can be obtained by the conventional multi-region vertical alignment liquid crystal display device, which has a problem of unevenness in various display viewing angles, especially at many display angles (for example, 120 degrees). Conventional multi-zone vertical alignment liquid crystal display devices exhibit very different hue characteristics from ideal hue characteristics. 15 Fig. 2 is a view showing the structure of a conventional multi-region vertical alignment liquid crystal display device, which is a schematic view showing the structure of a halogen unit. In FIG. 2, the first substrate 11 and the second substrate 12 are included. There are a plurality of liquid crystal molecules 141, 142, 143, 144 between the first substrate 丨丨 and the second substrate 12. A common electrode 11; 1 is plated on the surface of the first substrate u, and a plurality of protrusions 13 are formed on the surface 20 of the common electrode. A halogen electrode 121' is mineralized on the surface of the second substrate 12 and has a plurality of slits 15 between the halogen electrodes 121. Since all the pixel units of the conventional MVA liquid crystal display device are in the same gray scale state, the tilt angles of the liquid crystal molecules of the sub-pixel unit will be the same. 6 1334502 For example, the tilt angle of the liquid crystal molecules ,41, 142 in FIG. 2 is the same as the tilt angle of the liquid crystal molecules 143: 144. As such, the brightness of the panel will be uneven and the display quality will be degraded. In order to solve the above problems, a liquid crystal display device has been disclosed in Japanese Patent Application Publication No. 2004-258139 and Ser. No. 2004-62146, wherein a parent element is divided into two sub-pixel units by two halogen electrodes and two auxiliary capacitors. And each of the pixels is supplied with a first operating voltage (vl(gk)) 10 15 20 and a second operating voltage (V2(gk)), wherein the first operating voltage is different from the second operating voltage, and the first operating voltage The difference from the second operating voltage is formed by a capacitive coupling driving method. Thus, the above-identified patent application facilitates the use of split two sub-pixel units with operating voltages of different voltages to improve the angular gamma offset in a portion of the gray scale. As shown in Fig. 3 to Fig. 5, the gamma curve diagram of the above-mentioned patent application is shown, wherein the vertical position of the figures is the voltage and the transmittance 'the abscissa is the gray scale transmittance. As shown in FIG. 3, it shows an angular gamma shift which improves the low gray scale, wherein the pixel cut rate is: the first-order pixel is ^3, and the second pixel unit is 〇7. As shown in Fig. 4:', the system shows an improved angular gamma shift of high gray scale. The rate of sputum cut in the sputum is: the first-order morpheme unit shape 7, and the second picture material is 〇3. For example, the system shows an improved angular gamma shift of the gray scale, where the prime rate is: 第_5 for the first-order unit and 〇5 for the second unit. The gamma $ test still can not effectively improve all gray-scale angle gamma shift, so the above-mentioned Japanese patent ΛΜ - ^ 曱 曱 曱 曱 曱 曱 曱 曱 曱 曱 曱 曱 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶 液晶[Explanation] The main object of the present invention is to provide a vertical alignment type liquid crystal display device and to check the viewing angle of each of the Baliki Morning Element Circuits to improve the vertical alignment type liquid crystal display. Another purpose of the Moon is to provide a vertical alignment type liquid crystal display and a pixel unit circuit thereof, which can improve the problem of unevenness in different viewing angles. According to the invention, a vertical alignment type liquid crystal display unit is proposed. The pixel unit circuit includes a first-order second prime unit, a second secondary pixel unit, and a third sub-pixel unit. The first-human pixel unit further includes a first auxiliary capacitor, and the first auxiliary capacitor 'end is electrically connected to the first coupled signal line that provides the first coupled electrode signal. The second sub-pixel unit further includes a second auxiliary capacitor, and one end of the fifteenth auxiliary electric valley is electrically connected to a common voltage line that supplies a common voltage, and the third sub-pixel unit further includes a third auxiliary capacitor. And the terminal of the third auxiliary capacitor is electrically connected to the second consuming signal line of the second engaging electrode signal. In addition, the _th sub-divinity unit includes a first sub-pixel voltage. The second sub-divinity unit includes a second sub-decinal voltage, and the third sub-dimorph unit includes a third sub-element. The voltage is the first time, and the first time the 20-denier voltage is lightly coupled to the first-stealing electrode signal, and the third-order secondary voltage is lightly combined with the first combined electrode signal. According to another color of the present invention, a vertical alignment type liquid crystal display device is proposed. The vertical alignment type liquid crystal display device includes a first substrate and a first substrate. The first substrate includes a common conductive layer and a plurality of bumps 8 1334502. The common conductive layer is located on the first substrate, and the bumps are located on the damaged surface of the common conductive layer. The second substrate includes a plurality of halogen electrodes, a plurality of first-coupling electrodes, a plurality of second electrodes, a plurality of common electrodes, and a gate insulating layer, and the second coupling electrodes The electrode and the common electrode are located on a portion of the surface of the second substrate, and the closed insulating layer is located on the surface of the first coupling electrode, the second coupling electrode, and the surface of the common electrode. The surface of the / pixel electrode is located on a portion of the surface of the gate insulating layer. In addition, the first substrate and the second substrate are formed with a plurality of pixel units, and each of the pixel units further includes: a second sub-pixel unit, a second sub-dimorph unit, and a third sub-dimorph unit. The first 兀 further includes a first auxiliary capacitor, and the capacitor and one of the first surface-closing electrodes: the secondary sub-element unit further includes a second auxiliary ray 6 0 上上 - 15 20 笙丘略助An electric valley, and the second auxiliary capacitor is electrically connected to one of the two same electrodes. The above-mentioned = three auxiliary capacitors, and the third auxiliary capacitor is electrically connected to the first plurality of electrodes, wherein each of the -first coupling electrodes uses a = electrode signal, and each of the second consumable electrodes is used to provide a first: ::r: provides a common voltage, a secondary voltage of the secondary unit, and a third of the first pixel voltage signals. The sub-pixel voltages are different. a first-order pixel voltage, and a third first-order sub-singular element-liquid crystal capacitor, a first thin film electrode, a first-film transistor, and a source and a data line of the first and second solar cells Electrically connected, 9 is located on the first substrate. The first substrate further includes a color filter and a common conductive layer. The second substrate further includes a protective layer and a vertical alignment layer, the protective layer is located on the gate insulating layer, and the surface of the halogen electrode is located on a surface of the protective layer, such as a vertical alignment layer (four) The other part of the surface of the layer. [Embodiment] Referring to a preferred embodiment of the present invention, please refer to the schematic diagram of the pixel circuit 10 shown in FIG. In FIG. 6, the 'single-pixel unit 6 includes a plurality of sub-cell units 61'62, 63, a data line 64, a scan line (Vg), a first coupled signal line (Vcsl) 66, and a common voltage line ( Vcs) 67, and a second light signal line (Vcs2) 68', wherein the sub-pixel unit 61 further includes a thin film transistor 6 ι, a liquid crystal capacitor 6U, and an auxiliary capacitor 613, and the sub-pixel unit 62 further includes a thin film transistor 15 The liquid crystal capacitor 622 and the auxiliary capacitor 623 further include a thin film transistor 631, a liquid crystal capacitor 632, and an auxiliary capacitor 633. The data line 64 is electrically connected to the source of the thin film transistors 611, 621, and 631, respectively. The scan line 65 is electrically connected to the gate of the thin film transistor 6U, 621, 631, and the drain of the thin film transistor 611 is electrically connected to the end of the liquid crystal capacitor 612 and the end of the auxiliary capacitor 613. The transistor 62 is electrically connected to one end of the liquid crystal capacitor 622 and one end of the auxiliary capacitor 623. The drain of the thin film transistor 631 is electrically connected to one end of the liquid crystal capacitor 632 and one end of the auxiliary capacitor 633; the auxiliary capacitor 613 The other end is electrically connected to the first coupled signal line 66 The other end of the auxiliary capacitor 623 is electrically connected to the common voltage line (7), and the other end of the auxiliary capacitor 633 is electrically connected to the second coupled signal line 68. In this embodiment, the first coupled signal line 66 and the common voltage are connected. The material of the line 67 and the second coupled signal line 68 is the same as that of the scan line 65. In the fifth embodiment, the first coupled signal line 66 is used to provide a first coupled electrode signal, and the second coupled signal line 66 is used to provide The first coupling electrode signal and the second coupling electrode signal are both AC signals, and the first coupling electrode signal and the second coupling electrode signal are 180 degrees out of phase, and the first coupling electrode signal and the second coupling signal The signal width of the coupled electrode signal is 1 to 6 times that of the lean signal provided by the data line 64. The voltage signal provided by the common voltage line 67 is a DC voltage signal. The first coupled electrode signal and the second coupled electrode signal And having a first voltage level and a second voltage level. For example, in this embodiment, the first voltage level is a low voltage level, and the second voltage level is a high voltage level. In other embodiments, the first voltage level may be a high voltage level, and the second voltage level may be a low voltage level. Since the first coupling electrode signal is 180 degrees out of phase with the second coupling electrode signal, the first When the coupled electrode signal is at a high voltage level, the second coupled electrode signal is at a low voltage level. Since the first signal line 66 is electrically connected to the first auxiliary capacitor 613, the common voltage line 67 and the second auxiliary The capacitor M3 is electrically connected, the second coupling signal line 68 is electrically connected to the third auxiliary capacitor 633, and the first coupling signal line 66 provides the voltage to the secondary unit 61, and the common voltage line 67 is provided to the secondary unit 62. The voltage and the voltage of the second coupled signal line (10) provided to the sub-pixels 2 12 1334502 63 are different, so the pixel voltages of the sub-cell units 61, 62, 63 will be different. The pixel voltage of the above-described sub-pixel units 61, 62, 63 can be obtained according to the following formula: 5 Vpl = (Csl / (Csl + Clcl + Cgdl)) * Vcsl + Vsig

Vp2=Vsig

Vp3=(Cs3/(Cs3+Clc3+Cgd3))*Vcs3 - Vsig , where Vpl is the pixel voltage of the subpixel unit 61, Vp2 is the pixel voltage of the sub-prime unit 62, and Vp3 is the sub-picture unit 63. The voltage of Vsig is the voltage level of the first coupled electrode signal provided by the first coupled signal line 66, and Vcs3 is provided by the second coupled signal line 68. The voltage level of the second coupling electrode signal, Csl is the auxiliary electric valley 613, Clc 1 is the liquid crystal capacitor 612, Cgd 1 is the capacitance between the gate and the drain of the thin film transistor ό 11 'Cs3 is the auxiliary capacitor 633, and Clc3 is the liquid crystal capacitor 632, Cgd3 15 is the capacitance between the gate and the drain of the thin film transistor 6; Since the present embodiment provides different pixel voltages (Vpl, Vp2, Vp3) for different sub-halogen units 61, 62, 63, the tilt angle of the liquid crystal molecules to which the sub-halogen units 61, 62, 63 belong. Different from each other, for example, the tilt angle of the liquid crystal molecules to which the secondary halogen unit 61 belongs is different from the tilt angle of the liquid crystal molecules to which the secondary pixel unit 20 belongs, and the tilt angle and the secondary drawing of the liquid crystal molecules to which the sub-pixel unit 62 belongs. The liquid crystal molecules to which the element unit 63 belongs have different inclination angles. Therefore, the phase delay (PhaseRetardati〇n) generated by one of the sub-pixel units 61, 62, 63 can be obtained from the other sub-halogens of the sub-halogen units 61, 62, 63. The phase delay generated by the unit is compensated by 25, which can improve all gray-scale viewing angles and improve the display of the 13 1334502 * electrode signal, so that the pixel voltage of the sub-success unit 63 is further reduced, as shown by (^. sub-pixel unit The pixel voltage of 63, the pixel voltage of the sub-halogen unit 62, and the pixel voltage of the sub-pixel unit 61 are different. * By coupling the first coupling electrode 5 signal provided by the first coupling signal line 66, The pixel voltage of the sub-pixel unit 61 rises and is close to the voltage level of the data signal provided by the original data line 64, as indicated by A1. Next, the following describes how to form the pixel circuit discussed above. A cross-sectional view showing a vertical alignment type liquid crystal display device of the preferred embodiment of the present invention includes a glass substrate 811 and a glass substrate gw, and a negative liquid crystal layer 82 is included between the glass substrate 811 and the glass substrate 812. Negative fluid The crystal layer 82 includes a plurality of liquid crystal molecules 821, 822, 823, 824, 825, and 826 having a negative dielectric constant. A color filter 83 is disposed on the glass substrate 811, and the color filter 83 is disposed on the color plate 86. There is a common conductive layer 84, and a plurality of protrusions 851, 852, 853 are added on the common conductive layer, wherein the protrusions 851, 852, 853 are located on a part of the surface of the common conductive layer 84. # The gate insulating layer 86 is disposed on the glass substrate 812, and the gate insulating layer 86 is disposed on the gate insulating layer 86. The first bonding electrode 881, the common electrode 882, and the first surface are disposed on the glass substrate 812. The second coupling electrode 883, wherein the first coupling electrode 881, the common electrode 882, and the second coupling electrode 883 are located on the damaged surface of the glass substrate 812, and the first consuming electrode 881 and the auxiliary capacitor 613 are electrically connected. The electrode 882 is electrically connected to the auxiliary capacitor 623, and the second electrode 883 is electrically connected to the auxiliary capacitor 633. The first coupling electrode 881 is used to provide the first coupling electrode signal 'the common electrode 8 82 for providing a common voltage. 1334502 first coupling electrode 883 is used For the second coupling electrode signal, that is, the first coupling electrode 881 can be formed in the first coupling signal line 66 in FIG. 6, the common electrode 882 can be formed in the common voltage line 67 in FIG. 6, the second coupling electrode ^^ The second coupled signal line 68 can be formed in FIG. 6. Since FIG. 8 shows only a cross-sectional view of a single pixel, FIG. 8 shows only a single first coupling electrode 881, a single common electrode 882, and a single second coupling electrode. 883 'In the actual case, the surface of the glass substrate 812 is provided with a plurality of first coupling electrodes, a plurality of common electrodes, and a plurality of second coupling electrodes. In addition, a plurality of pixel electrodes 891, 892, 893, 894, 895, 896 are disposed on the protective layer 87, wherein the halogen electrodes 891, 892, 893, 894, 895, 896 are located on the protective layer 87. On a portion of the surface, a vertical alignment layer is located on the surface of the pixel electrodes 891, 892, 893, 894, 895, 896 and other portions of the protective layer 87. In addition, between the pixel electrodes 891, 892, 893, 894, 15 895, 896, there are a plurality of slits 801, 802, 803. In the single halogen unit 6, the first primary halogen unit 61 is smaller than or equal to the aperture ratio of the third secondary unit 63. The auxiliary capacitor 613 of the first sub-pixel unit 连接 is connected to the first consumable signal line 66 formed by the first surface-closing electrode 881, and the auxiliary capacitor 623 of the second sub-decimal unit 62 is connected to the common electric unit 20 The common voltage line 67 formed by the poles 882 is connected, and the auxiliary capacitor 633 of the third sub-pixel unit 63 is connected to the second coupled signal line 68 formed by the second coupling electrode 883. Therefore, the first coupled signal line "and the second coupled signal line 68 can be used to provide different phase coupling electrode signals to the auxiliary capacitors 613, 633 ' and maintain the pixel voltage of the second sub-cell unit 62 to make the 1334502 The pixel voltage of one secondary unit 61, the pixel voltage of the second sub-cell unit 62, and the pixel voltage of the third sub-pixel unit 63 are different, so that the first sub-pixel unit The liquid crystal molecules 821, 822, the liquid crystal molecules 825, 826 of the second sub-halogen unit 62, and the liquid crystal molecules 823, 824 of the third sub-halogen unit 5 63 belong to different angles to improve the vertical direction. The problem of uneven brightness of the alignment type liquid crystal display device. Fig. 9 is a wiring diagram of the pixel unit 6 of the vertical alignment type liquid crystal display device of the present invention, which includes the sub-halogen units 61, 62, 63, and the thin film transistors 611, 621. , a first coupling electrode 88, a common electrode 882, a second coupling electrode 10 883, a scan line (gate bus line) 65 1,652, and a data line 64. The above-described sub-halogen units 61, 62, 63 , thin film transistor 611, 621, 63 1, the first The consuming electrode 881, the common electrode 8 82, the second coupling electrode 883, the scanning line 65 1,652, and the data line 64 are all disposed on the glass substrate 812 of FIG. 8 , and the first coupling electrode 881 and the scanning line 651 are 652 is parallel. 15 FIG. 10 to FIG. 11 are schematic diagrams showing a comparison between a vertical alignment type liquid crystal display device and a conventional vertical alignment type liquid crystal display device according to the present invention, wherein FIG. 10 is a schematic diagram of a tone curve of a conventional vertical alignment type liquid crystal display device. Figure 11 is a schematic diagram showing the tone curve of the alignment type liquid crystal display device according to a preferred embodiment of the present invention. In Fig. 10 and Fig. 10, the ordinates of the icons are 20 voltage and transmittance, and the abscissa is Gray scale transmittance. In Fig. 10, the conventional vertical alignment type liquid crystal display device (for example, each of its pixel units is not divided into other human element units) has a tone curve P1 at a viewing angle of 60 degrees, and is ideal. The tone curve P2 is very far away, and the conventional tone curve p丨 is not round enough. In Fig. 11, the color of the alignment type liquid crystal display device provided by the present invention 17 1334502 4 curve Q1 is captured at a 6G degree angle. Rational The tone curve is very close to the distance, and at other angles of view, f is close to the ideal tone curve. In addition, the present invention is applicable not only to vertical alignment (V-shaped panel module) but also to twisted nematic (TN). Panel module for multi-domain compensation. ίο 15

As can be seen from the above description, the present invention divides each pixel unit into three sub-pixel units, and the auxiliary capacitor of the first-order sub-unit unit is electrically connected to the first coupling signal line that provides the first-light electrode signal. The second sub-single: the auxiliary capacitor is electrically connected to the common voltage line providing the common voltage, the auxiliary capacitor of the third sub-pixel unit and the second signal line providing the second surface-conducting signal Connection, 透过 for controlling the phase of the first and second electrode signals, the phase of the electrode and the t-press, and the maintenance of the second element of the second element, to make the material: The voltages are all different, and the second angles are different from each other to improve the difference of the angle of view. The scope of the right is subject to the above-mentioned embodiment as described in the scope of the patent application. 20 [Simple description of the drawing] FIG. 1 is a schematic diagram of a multi-region vertical diagram 0 color tone curve of a liquid crystal display device. Schematic diagram of a aligning liquid crystal display device 18 1334502 Fig. 3 is a schematic diagram of a gamma curve of one embodiment of a liquid crystal display device. Fig. 4 is a schematic diagram of a gamma curve of another embodiment of the liquid crystal display device. A schematic diagram of a gamma curve of another embodiment of the display device. Fig. 6 is a circuit diagram of a pixel unit according to a preferred embodiment of the present invention. 5 Figure 7 shows the sub-pixel elements included in a single pixel unit. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 8 is a cross-sectional view showing a vertical alignment type liquid crystal display device of a preferred embodiment of the present invention. Fig. 9 is a plan view showing a wiring of a pixel unit 6 of a vertical alignment type liquid crystal display device of the present invention. Schematic diagram of the tone curve of the conventional vertical alignment type liquid crystal display device. Fig. 11 is a schematic diagram showing the tone curve of the alignment type liquid crystal display device according to a preferred embodiment of the present invention. 15 [Description of main component symbols] - substrate second substrate pixel Electrode protrusion liquid crystal molecular slit

11 common electrode ill 12 121,891,892,893,894,895,896 13,851,852,853 141,142,143,144,821,822,823,824,825,826 15,801,802,803 pixel unit 1,6 pixel unit 1,61,62,63 19 1334502

Thin film transistor 211,221,351,352,63 auxiliary capacitor 212,222,371,372 data line 64 scan line 65,651,652 first coupled signal line 66 common voltage line 67 first light signal line 68 thin film transistor 61 1,621,631 liquid crystal capacitor 612,622,632 auxiliary capacitor 613,623,633 glass substrate 811,812 liquid crystal layer 82 Color filter 83 common conductive layer 84 gate insulating layer 86 protective layer 87 first coupling electrode 881 common electrode 882 second coupling electrode 883 vertical alignment layer 80

20

Claims (1)

1334502 ----p 95112339, September 1999 revision page #年月月<日修正本10, patent application scope: 1. A pixel unit of a vertical alignment type liquid crystal display device, including: a second pixel unit further includes a first auxiliary capacitor, and one end of the .5 first auxiliary capacitor is electrically connected to a first coupled signal line that provides a first coupling electrode signal; The element unit further includes a second auxiliary capacitor, and one end of the second auxiliary capacitor is electrically connected to a common voltage line that provides a common voltage; and 10 to a third sub-pixel unit, and further includes a third An auxiliary capacitor, wherein one end of the third auxiliary capacitor is electrically connected to a second coupled signal line that provides a second coupling electrode signal, wherein the first sub-dielectric unit includes a first sub-pixel voltage, The second sub-decinal unit includes a second sub-pixel voltage, the third fifteen-dimensional unit includes a third sub-decinal voltage, and the first sub-pixel voltage is coupled to the first coupling Electrode signal, the first The third sub-decimal voltage is coupled to the second coupled electrode signal, wherein the first sub-single voltage, the second sub-pixel voltage, and the third sub-dimorph voltage are different. 2. The pixel unit circuit of claim 1, wherein the first coupled signal line 'the second consumed signal line, and the common voltage line and the same one of the scan lines are the same. 3. The pixel unit circuit of claim 2, wherein the first sub-pixel unit further comprises a first thin film transistor and a first liquid crystal capacitor, the first thin film transistor The source is electrically connected to a data line 21 1334502, and the gate of the first thin film transistor is electrically connected to the scan line, the drain of the first thin film transistor and one end of the first liquid crystal capacitor The other end of the first auxiliary capacitor is electrically connected. 4. The pixel unit circuit of claim 3, wherein the data line provides a data signal, and the pulse width of the first coupling electrode signal and the second coupling electrode signal is the data signal 1 to 6 times. 5. The pixel unit circuit of claim 2, wherein the second sub-dielectric unit further comprises a second thin film transistor and a second liquid crystal capacitor, the source of the second thin film transistor The pole is electrically connected to a data line, and the gate of the second thin film transistor is electrically connected to the scan line, the drain of the second thin film transistor and one end of the second liquid crystal capacitor and the second The other end of the auxiliary capacitor is electrically connected. 6. The pixel unit circuit of claim 2, wherein the third sub-pixel unit further comprises a third thin film transistor and a third 15 liquid crystal capacitor, the third thin film transistor The source is electrically connected to a data line, the gate of the third thin film transistor is electrically connected to the scan line, the drain of the third thin film transistor and one end of the third liquid crystal capacitor and the third auxiliary The other end of the capacitor is electrically connected. 7. The pixel unit circuit of claim 1, wherein the voltages of the first coupling electrode signal and the second coupling electrode signal are each an alternating voltage, and the common voltage is a direct current voltage. 8. The pixel unit circuit of claim 1, wherein the first secondary voltage, the second secondary voltage, and the third sub-pixel voltage are 0.5 to 2 volts . The pixel unit circuit of claim 1, wherein the first consuming electrode signal is inverted by 18 degrees from the second coupling electrode signal. 10. The pixel unit circuit of claim 1, wherein the aperture ratio of the first sub-pixel unit is the same as the opening rate of the third sub-pixel unit. 11. The pixel unit circuit of claim 1, wherein an aperture ratio of the first sub-pixel unit is smaller than an aperture ratio of the third sub-pixel unit. 12· a vertical alignment type liquid crystal display device, comprising: a first substrate comprising a common conductive layer and a plurality of protrusions, wherein the == conductive layer is located on the first substrate, and the protrusions are located on the common conductive layer a portion of the surface; and a 15 electrode IS base Ϊ 'comprising a plurality of pixel electrodes, a plurality of first-coupling ridges, a plurality of second merging electrodes, a plurality of common electrodes, and a closed-pole, rib layer, § The first coupling electrode such as Hai, and the private u ※ 寻 一 耦合 耦合 、 、 乃 乃 共同 共同 共同 共同 共同 共同 共同 共同 共同 共同 共同 共同 共同 共同 共同 共同 共同 共同 共同 共同 共同 共同 共同 共同 共同 共同 共同 共同 共同 共同 共同 共同 共同 共同 共同a second light-bonding electrode, and a surface of the common electrode 20 and located on a surface of the other portion of the second substrate, wherein the books are located on a portion of the gate insulating layer, and are electrically formed with a plurality of pixel units. Each of the substrates and the (four) two substrates only include the first sub-pixel unit, and further includes a first auxiliary capacitor and the first coupling: an auxiliary capacitor 'and the second second book One of the electrical connections of Xin Danyu φ ^; The first auxiliary capacitor further includes a second auxiliary capacitor and the same electric brother-auxiliary capacitor, and the /, one of the electrical connections; and 23 25 - the third sub-dielectric unit, and the third auxiliary capacitor material ^ , one of the first coupling electrodes of the mystery 4 is electrically connected, and two: the mother-first light-bonding electrode is used to provide a first, electrode signal, and each of the electrodes is used to provide a second combined electrode signal. Each of the common: the pole is used to provide a common voltage, and the element of the first sub-decibation unit is coupled to the first coupling electrode signal, and the pixel voltage of the third sub-tenox unit is coupled to the second coupling electrode a signal, wherein the first sub-pixel voltage, the second sub-single voltage, and the third sub-negative are different. 1〇_ 13. The vertical alignment type liquid crystal display according to claim 12, wherein the voltage of the first-light electrode signal and the second electrode signal is an alternating voltage, the common The voltage is a DC voltage. The vertical alignment type liquid crystal display device of claim 12, further comprising a liquid crystal layer between the first substrate and the second substrate 15 . 15. The vertical alignment type liquid crystal display device of claim 12, wherein the first substrate further comprises a color filter, the color filter being located on the first substrate and the common conductive layer between. The vertical alignment type liquid crystal display according to claim 12, wherein the second substrate further comprises a protective layer, the protective layer is located above the insulating layer, and the The halogen electrode is located on a portion of the surface of the protective layer. 17. The vertical alignment type liquid crystal display device of claim 16, wherein the two substrates further comprise a vertical alignment layer, and the vertical alignment 24 1334502 is located on the surface of the electrodes and the protection The other part of the surface of the layer. 18. The vertical g-oriented liquid crystal display device of claim 12, wherein the first sub-singular element, the second sub-pixel unit, 5, and the third minor The elemental voltage of the prime unit is 0.5 to 2 volts. 19. The vertical alignment type liquid crystal display device of claim 12, wherein the first coupling electrode signal is inverted by 180 degrees from the second coupling electrode signal. Φ 2〇· The vertical alignment type liquid crystal display device of claim 12, wherein the aperture ratio of the first sub-pixel unit is the same as the aperture ratio of the third two-dimensional pixel unit. 21. The vertical alignment type liquid crystal display device of claim 12, wherein an aperture ratio of the first sub-halogen unit is smaller than an aperture ratio of the third Hungarian pixel unit. 15 25