CN104280950B - Liquid crystal display panel and liquid crystal display device using same - Google Patents

Abstract

The present invention provides a liquid crystal display panel and a liquid crystal display device using the same. The liquid crystal display device includes a backlight module and a liquid crystal display panel. The backlight module is used to provide a light, and the liquid crystal display panel is arranged on one side of the backlight module, and the light penetrates through the liquid crystal display panel. The liquid crystal display panel includes a substrate, a scan line, a first and a second data line, a first and a second switch element, and a first and a second pixel electrode. The scan line and the first and the second data line are arranged on the substrate, and the first and the second data line are perpendicular to the scan line. The first and the second switch elements are respectively arranged at the intersection of the scan line and the first data line and the scan line and the second data line. The first and the second pixel electrodes are respectively electrically connected to the first and the second switch elements, and the area of the first pixel electrode is substantially smaller than the area of the second pixel electrode.

Description

Liquid crystal display panel and liquid crystal display device using the same

This application is a divisional application of the Chinese invention patent application filed on August 21, 2009 with application number 200910163557.6

technical field

The present invention relates to a liquid crystal display panel and a liquid crystal display device using the same, and in particular to a liquid crystal display panel with multi-domain liquid crystal inversion and a liquid crystal display device using the same.

Background technique

In recent years, consumer electronic products have become increasingly popular among consumers. Various electronic products, such as mobile phones, notebook computers and even LCD TVs, have become an indispensable part of people's daily life. In particular, thin display devices using liquid crystal display panels have gradually replaced traditional picture tube displays due to their advantages of small size, low radiation, and low power consumption, and have become the first choice for consumers when purchasing monitors or TVs. With the increasing acceptance of liquid crystal display devices in the market, consumers have increasingly stringent requirements on the image quality of liquid crystal display devices, such as the correctness of viewing angle, contrast ratio, and color temperature.

In a conventional vertically aligned liquid crystal display device, when the image is viewed along the normal direction of the display panel, the gamma values of the red, green and blue gray scale curves are sequentially such that red is greater than green, and green is greater than blue. That is to say, in this way, it is easy to cause the color temperature shift of the white light produced after color mixing at different gray levels. For example, the color temperature of white light at 128 gray levels will be higher than that of white light at 255 gray levels. color temperature. As a result, the correctness of color when the liquid crystal display device displays images is seriously affected.

At present, there is a solution in the industry, which is to represent the white gray scale to be displayed by different red gray scales, green gray scales and blue gray scales respectively. However, when displaying different gray scales of different colors, a large amount of memory space needs to be applied to buffer data for red, green and blue respectively. The larger memory space correspondingly increases the manufacturing cost of the liquid crystal display device.

Contents of the invention

In view of this, the present invention provides a liquid crystal display panel and a liquid crystal display device using the same, which uses the method that the pixel electrodes corresponding to different data lines have different areas, so that the grayscale curves corresponding to different pixel electrodes can be matched with each other, In order to reduce the color temperature shift of the screen at different gray levels, the display quality is further improved.

According to the present invention, a liquid crystal display panel is proposed, including a substrate, a scanning line, a first data line, a second data line, a first switching element, a first pixel electrode, a second switching element and a the second pixel electrode. The scan line, the first data line and the second data line are arranged on the substrate, and the first data line and the second data line are perpendicular to the scan line. The first switching element is arranged at the intersection of the scanning line and the first data line, and the second switching element is arranged at the intersection of the scanning line and the second data line. The first pixel electrode is electrically connected to the first switch element, and the second pixel electrode is electrically connected to the second switch element. The area of the first pixel electrode is smaller than that of the second pixel electrode.

According to the present invention, another liquid crystal display device is provided, which includes a backlight module and a liquid crystal display panel. The backlight module is used for providing a light penetrating through the liquid crystal display panel. The liquid crystal display panel is arranged on one side of the backlight module, and includes a substrate, a scanning line, a first data line, a second data line, a first switching element, a first pixel electrode, a second switching element and a second pixel electrode. The scan line, the first data line and the second data line are arranged on the substrate, and the first data line and a second data line are perpendicular to the scan line. The first switching element is arranged at the intersection of the scanning line and the first data line, and the second switching element is arranged at the intersection of the scanning line and the second data line. The first pixel electrode is electrically connected to the first switch element, and the second pixel electrode is electrically connected to the second switch element. The area of the first pixel electrode is smaller than that of the second pixel electrode.

According to the present invention, a liquid crystal display panel is provided, including a first substrate, a scanning line, a first data line, a second data line, a first switching element, a first pixel electrode, and a second switch The element, a second pixel electrode, a second substrate, a first common electrode and a second common electrode. The scan line, the first data line and the second data line are arranged on the first substrate, and the first data line and the second data line are perpendicular to the scan line. The first switching element is arranged at the intersection of the scanning line and the first data line, and the second switching element is arranged at the intersection of the scanning line and the second data line. The first pixel electrode is disposed on the first substrate and electrically connected to the first switch element. The second pixel electrode is disposed on the first substrate and electrically connected to the second switch element. The second substrate is arranged opposite to the first substrate. The first common electrode is disposed on the second substrate, and at least partially overlaps with the first pixel electrode. The second common electrode is disposed on the second substrate, and at least partially overlaps with the second pixel electrode. The overlapping area of the first pixel electrode and the first common electrode is smaller than the overlapping area of the second pixel electrode and the second common electrode.

According to the present invention, a liquid crystal display device is provided, which includes a backlight module and a liquid crystal display panel. The backlight module is used for providing a light penetrating through the liquid crystal display panel. The liquid crystal display panel is arranged on one side of the backlight module, and includes a first substrate, a scanning line, a first data line, a second data line, a first switching element, a first pixel electrode, and a second switch The element, a second pixel electrode, a second substrate, a first common electrode and a second common electrode. The scan line, the first data line and the second data line are arranged on the first substrate, and the first data line and the second data line are perpendicular to the scan line. The first switching element is arranged at the intersection of the scanning line and the first data line, and the second switching element is arranged at the intersection of the scanning line and the second data line. The first pixel electrode is disposed on the first substrate and electrically connected to the first switch element. The second pixel electrode is disposed on the first substrate and electrically connected to the second switch element. The second substrate is disposed opposite to the first substrate. The first common electrode is disposed on the second substrate, and at least partially overlaps with the first pixel electrode. The second common electrode is disposed on the second substrate, and at least partially overlaps with the second pixel electrode. The overlapping area of the first pixel electrode and the first common electrode is smaller than the overlapping area of the second pixel electrode and the second common electrode.

Description of drawings

In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

FIG. 1 shows a liquid crystal display device according to a preferred embodiment of the present invention;

FIG. 2 is a schematic diagram of a first substrate of the liquid crystal display panel in FIG. 1;

Fig. 3 shows the schematic diagram when the first slit and the second slit have different widths;

Fig. 4 shows the schematic diagram when the first flange and the second flange have different widths;

5 shows a schematic diagram of a liquid crystal display panel including a first pixel electrode, a second pixel electrode and a third pixel electrode;

6 shows a schematic diagram of first and second pixel electrodes and first and second common electrodes in a liquid crystal display panel;

Fig. 7 depicts a sectional view along line A-A' in Fig. 6;

8 illustrates a cross-sectional view of a liquid crystal display panel including a third common electrode; and

FIGS. 9A-9C respectively illustrate the voltage-transmission curves of different types of regions of the first pixel electrode and the first common electrode for color display;

Description of main component symbols:

100: liquid crystal display device

110: Backlight module

121: first switching element

122: second switching element

131: first pixel electrode

131a: First flange

132, 132', 132": the second pixel electrode

132a, 132a', 132a": second flange

133: the third pixel electrode

140: scan line

141: The first data line

142: Second data line

143: The third data line

150: LCD display panel

151: First Substrate

152: Second substrate

153: liquid crystal

161: First main slit

162, 162’, 162”: 2nd main slot

163: Third main slit

164: Fourth main slit

171: First Slit

172, 172’, 172”: second slit

173: The third slit

174: The Fourth Slit

181: the first common electrode

181a: Third flange

182: Second common electrode

182a: Fourth flange

183: The third common electrode

B1, B2, B3, G1, G2, G3, R1, R2, R3: curves

d1, d2, d3, d4: the length of the secondary slit

e1, e2, e2’, e2”: the width of the flange

L: light

w1, w2, w2’, w2”, w3, w4: the width of the secondary slit

detailed description

A liquid crystal display device according to a preferred embodiment of the present invention at least includes a backlight module and a liquid crystal display panel. The liquid crystal display panel utilizes the way that the pixel electrodes in different color pixels have different areas, so that the grayscale curves of different color pixels can be matched and compensated, so that the display screen has substantially the same color temperature at different grayscales, further improving the product display quality. The following provides detailed descriptions of the embodiments according to the present invention, but the embodiments are only used as examples for illustration and will not limit the scope of protection of the present invention. Furthermore, the drawings in the embodiments also omit unnecessary components to clearly show the technical characteristics of the present invention.

Please refer to FIG. 1 and FIG. 2 at the same time. FIG. 1 shows a liquid crystal display device according to a preferred embodiment of the present invention; FIG. 2 shows a schematic diagram of the first substrate of the liquid crystal display panel in FIG. 1 . The liquid crystal display device 100 includes a backlight module 110 and a liquid crystal display panel 150 . The backlight module 110 is used to provide a light L to pass through the liquid crystal display panel 150 . The liquid crystal display panel 150 is arranged on one side of the backlight module 110, and includes a first substrate 151, a scanning line 140, a first data line 141, a second data line 142, a first switching element 121, a first A pixel electrode 131 , a second switch element 122 and a second pixel electrode 132 . The scan lines 140 , the first data lines 141 and the second data lines 142 are all disposed on the first substrate 151 , and the first data lines 141 and the second data lines 142 are respectively disposed perpendicular to the scan lines 140 . The first switch element 121 is disposed near the intersection of the scan line 140 and the first data line 141 , and the second switch element 122 is disposed near the intersection of the scan line 140 and the second data line 142 . The first pixel electrode 131 is electrically connected to the first switch element 121 , and the second pixel electrode 132 is electrically connected to the second switch element 122 . The area of the first pixel electrode 131 is smaller than the area 132 of the second pixel electrode.

In this embodiment, the first pixel electrode 131 is, for example, used to display blue. And the liquid crystal display panel 150 is, for example, a multi-domain vertical alignment (MVA) liquid crystal display panel. Since the area of the first pixel electrode 131 is smaller than that of the second pixel electrode 132 , the grayscale curve of the pixel corresponding to the first pixel electrode 131 is substantially lower than the grayscale curve of the pixel corresponding to the second pixel electrode 132 . In this way, the grayscale curves of the first pixel electrode 131 and the second pixel electrode 132 can be matched and compensated, so that the liquid crystal display panel 150 has the same color temperature at different white grayscales, thereby improving display quality. The content of this part will be described in detail later.

The structure of the liquid crystal display panel 150 will be further described below. As shown in FIG. 2 , the first pixel electrode 131 has at least one first main slit 161 , and the second pixel electrode 132 has at least one second main slit 162 . Furthermore, the first pixel electrode 131 corresponds to the edge of the first main slit 161, and has a plurality of first slits (fine slit) 171 and a plurality of first flanges 131a; the second pixel electrode 132 corresponds to the second The edge of the main slit 162 has a plurality of second slits 172 and a plurality of second flanges 132a. In this embodiment, various design methods can be applied to make the area of the first pixel electrode 131 smaller than the area 132 of the second pixel electrode. For example, the length of the first slit 171 is substantially greater than the length of the second slit 172 , so that the area of the first pixel electrode 131 is smaller than the area of the second pixel electrode 132 . As shown in FIG. 2 , the length d1 of the first slit 171 is substantially greater than the length d2 of the second slit 172 . Overall, the area of the first pixel electrode 131 is smaller than the area of the second pixel electrode 132 . Relatively speaking, the area of the first main slit 161 and the first slit 171 on the first substrate 151 is greater than the area of the second main slit 162 and the second slit 172 on the first substrate 151 .

In addition, the liquid crystal display panel 150 of this embodiment can also adopt a design method in which the first slit 171 and the second slit 172 have different widths. Please refer to FIG. 3 , which shows a schematic diagram when the first slit and the second slit have different widths. The width w1 of the first slit 171 of the first pixel electrode 131 is substantially greater than the width w2' of the second slit 172' of the second pixel electrode 132'. Therefore, the area of the first pixel electrode 131 is smaller than the area of the second pixel electrode 132'.

In addition, in this embodiment, the width of the first flange 131 a is different from the width of the second flange 132 a so that the area of the first pixel electrode 131 is smaller than the area of the second pixel electrode 132 . Please refer to FIG. 4 , which shows a schematic diagram of when the first flange and the second flange have different widths. The width e1 of the first flanges 131 a is substantially smaller than the width e2 ″ of the second flanges 132 a ″, and overall, the area of the first pixel electrode 131 is smaller than the area of the second pixel electrode 132 ″.

In practical applications, the liquid crystal display panel 150 of this embodiment can simultaneously use the length d1 of the first slit 171 to be greater than the length d2 of the second slit 172, and the width w1 of the first slit 171 to be greater than the second slit The width w2 of 172 and the width e1 of the first flange 131a are smaller than the width e2 of the second flange 132a or the way they match each other, so that the area of the first pixel electrode 131 is smaller than the area of the second pixel electrode 132 . Other ways of changing the size of the flange, the main slit and the sub-slit to make the area of the first pixel electrode 131 smaller than the area of the second pixel electrode 132 all belong to the scope of the present invention.

On the other hand, the liquid crystal display panel 150 of this embodiment may further include a third data line, a third switch element and a third pixel electrode. Please refer to FIG. 5 , which shows a schematic diagram of a liquid crystal display panel including a first pixel electrode, a second pixel electrode and a third pixel electrode. The third data line 143 is disposed on the first substrate 151 and is perpendicular to the scan line 140 . The third switch element 123 is disposed near the intersection of the scan line 140 and the third data line 143 . The third pixel electrode 133 is electrically connected to the third switch element 123 . The area of the first pixel electrode 131 is smaller than the area of the third pixel electrode 133 , and the area of the second pixel electrode 132 and the area of the third pixel electrode 133 can be designed to be equal or unequal as required. That is to say, the area of the first pixel electrode 131 , the area of the second pixel electrode 132 and the area of the third pixel electrode 133 may not be substantially equal. In addition, these pixel electrodes 131, 132 and 133 can apply the aforementioned method of changing the length or width of the flange, the main slit and the sub-slit, so that the area of the first pixel electrode 131 is smaller than that of the second pixel electrode 132 and the third pixel electrode 132. The area of the electrode 133.

In practice, the liquid crystal display panel 150 of the liquid crystal display device 100 of this embodiment may further include a second substrate 152 , a first common electrode 181 and a second common electrode 182 , as shown in FIG. 1 . Please refer to FIG. 6 and FIG. 7 at the same time. FIG. 6 shows a schematic view of the first and second pixel electrodes and the first and second common electrodes in a liquid crystal display device according to a preferred embodiment of the present invention; Sectional view of line A-A' in the middle. The second substrate 152 is disposed opposite to the first substrate 151 . The first common electrode 181 is disposed on the second substrate 152 and at least partially overlaps with the first pixel electrode 131 . The second common electrode 182 is disposed on the second substrate 152 and at least partially overlaps with the second pixel electrode 132 . The overlapping area of the first pixel electrode 131 and the first common electrode 181 is smaller than the overlapping area of the second pixel electrode 132 and the second common electrode 182 . In addition, the second substrate 152 is more for example provided with a color filter (color filter).

Furthermore, the first common electrode 181 and the second common electrode 182 respectively have at least one third main slit 163 and at least one fourth main slit 164 . The edge of the first common electrode 181 corresponding to the third main slit 163 has a plurality of third slits 173 and a plurality of third flanges 181a, and the edge of the second common electrode 182 corresponding to the fourth main slit 164 has a plurality of A fourth slit 174 and a plurality of fourth flanges 182a. The first slits 171 or the third slits 173 are longer than the second slits 172 or the fourth slits 174 . In the embodiment shown in FIG. 6 and FIG. 7, the length d1 of the first slits 171 is greater than the length d2 of the second slits 172, and the length d3 of the third slits 173 greater than the length d4 of the fourth slits 174 . Furthermore, the length d1 of the first slits 171 is, for example, substantially equal to the length d3 of the third slits 173, and the length d2 of the second slits 172 is, for example, substantially equal to this The length d4 of these fourth slits 174. In addition, the first slits 171 at least partially overlap the third slits 173 , and the second slits 172 do not overlap the fourth slits 174 . However, the arrangement of the lengths d1, d2, d3 and d4 of the first, second, third and fourth slits 171, 172, 173 and 174 is not limited thereto. Collocations in which the overlapping area of the first common electrode 181 is smaller than the overlapping area of the second pixel electrode 132 and the second common electrode 182 all fall within the scope of the present invention.

In addition, the liquid crystal display panel 150 of this embodiment can also be designed in such a way that the first, second, third and fourth slits 171 , 172 , 173 and 174 have different widths. For example, the width w1 of the first slits 171 is greater than the width w2 of the second slits 172 (as shown in FIG. 3 ), and the width of the third slits 173 is greater than the fourth slits. The width of the secondary slit 174. Other arrangements using different sub-slit widths, so that the overlapping area of the first pixel electrode 131 and the first common electrode 181 is smaller than the overlapping area of the second pixel electrode 132 and the second common electrode 182, all belong to the present invention. scope.

However, in another embodiment, the first, second, third and fourth flanges 131a, 132a, 181a and 182a can also be designed with different widths. For example, the width of the third flanges 181a is smaller than the width of the fourth flanges 182a. Other arrangements using different flange widths, so that the overlapping area of the first pixel electrode 131 and the first common electrode 181 is smaller than the overlapping area of the second pixel electrode 132 and the second common electrode 182, all belong to the present invention. range.

In practical applications, the liquid crystal display panel 150 of this embodiment can simultaneously use configurations of different slit lengths, configurations of different sub-slit widths, configurations of different flange widths, or their mutual matching, so that the first pixel The overlapping area of the electrode 131 and the first common electrode 181 is smaller than the overlapping area of the second pixel electrode 132 and the second common electrode 182 . Other configurations using changing the size of the flange, the main slit and the sub-slit so that the overlapping area of the first pixel electrode 131 and the first common electrode 181 is smaller than the overlapping area of the second pixel electrode 132 and the second common electrode 182 , all belong to the scope of the present invention.

The liquid crystal display panel 150 of the liquid crystal display device 100 of this embodiment may include a third data line 143 , a third switching element 124 and a third pixel electrode 133 , as shown in FIG. 5 . Furthermore, the liquid crystal display panel 150 may further include a third common electrode. Please refer to FIG. 8 , which is a cross-sectional view of a liquid crystal display panel including a third common electrode. The third common electrode 183 is disposed on the second substrate 152 and corresponding to the third pixel electrode 133 , and at least partially overlaps with the third pixel electrode 133 . These electrodes can be arranged in different lengths or widths of the aforementioned main slits, sub-slits and flanges, so that the overlapping area of the first pixel electrode 131 and the first common electrode 181 is smaller than that of the third pixel electrode 133 and the second pixel electrode 133. The overlapping area of the three common electrodes 183 . In addition, the overlapping area of the second pixel electrode 132 and the second common electrode 182 and the overlapping area of the third pixel electrode 133 and the third common electrode 183 can be designed to be equal or unequal as required. That is to say, the overlapping area of the first pixel electrode 131 and the first common electrode 181, the overlapping area of the second pixel electrode 132 and the second common electrode 182, and the overlapping area of the third pixel electrode 133 and the third common electrode 183 may be substantially unequal. In practice, the first pixel electrode 131 and the first common electrode 181 are located in a first color pixel, the second pixel electrode 132 and the second common electrode 182 are located in a second color pixel, and the third pixel electrode 132 and The third common electrode 183 is located in a third color pixel.

The liquid crystal display panel 150 can be divided according to whether there are common electrodes or pixel electrodes: a first-type area, which is an area where electrodes are provided on both the first substrate 151 and the second substrate 152; a second-type area, which is where the first An area on the substrate 151 or the second substrate 152 is an electrode and the other substrate is a sub-slit; and, a third type of area is an area on the first substrate 151 and the second substrate 152 that are both sub-slits. In the following, the first pixel electrode 131 and the first common electrode 181 in FIG. 6 are taken as an example for simulation. Please refer to FIGS. 9A-9C , which respectively illustrate voltage-transmission curve diagrams (V-T curve diagram) when different types of regions of the first pixel electrode and the first common electrode perform color display. When the first pixel electrode 131 and the first common electrode 181 are used to display red, as shown in FIG. 9A, the slope of the voltage-transmission curve R1 of the first type region is substantially greater than the voltage-transmission curve R1 of the second type region. curve R2, and the slope of the voltage-breakthrough curve R2 of the second type region is substantially larger than the voltage-breakthrough curve R3 of the third type region. Secondly, when the first pixel electrode 131 and the first common electrode 181 are used to display green, as shown in FIG. 9B , the slope of the voltage-transmission curve G1 of the first type region is substantially larger than the voltage-transmission curve G1 of the second type region. The penetration curve G2, and the slope of the voltage-breakthrough curve G2 of the second type region is substantially larger than the voltage-breakthrough curve G3 of the third type region. Moreover, when the first pixel electrode 131 and the first common electrode 181 are used to display blue, as shown in FIG. 9C , the slope of the voltage-transmission curve B1 of the first type area is substantially greater than the voltage of the second type area. - Breakthrough curve B2, and the slope of the voltage-breakthrough curve B2 for the second type of region is substantially greater than the voltage-breakthrough curve B3 for the third type of region.

From the above simulation results, it can be seen that when the areas occupied by the first and third main slits 161 and 163 and the first and third sub-slits 171 and 173 in the first pixel electrode 131 and the first common electrode 181 increase, the voltage - The slope of the breakthrough curve is reduced, ie its grayscale curve substantially lowers its position in the grayscale graph. In this embodiment, since the overlapping area of the first pixel electrode 131 and the first common electrode 181 is smaller than the overlapping area of the second pixel electrode 132 and the second common electrode 182, and smaller than the overlapping area of the third pixel electrode 133 and the third common electrode 183 , so corresponding to the first color pixel of the first pixel electrode 131 and the first common electrode 181 , the slit area has the largest specific gravity. In this embodiment, the first pixel electrode 131 is illustrated by taking the display of blue as an example. Compared with the situation where the area ratios occupied by the slits in the conventional three color pixels are all equal, the blue color in the liquid crystal display device 100 of this embodiment is The voltage-penetration curve of the color has a smaller slope, which is located at a lower position in the grayscale graph. In this way, red light and green light with higher transmittance of the same grayscale can be matched with blue light with lower transmittance of the same grayscale, so that white light has the same transmittance at different grayscales. Color temperature, to achieve the effect of color temperature such as full gray scale.

On the other hand, in this embodiment, the first switch element 121 and the second switch element 122 are respectively a thin film transistor (thin film transistor; TFT). The liquid crystal display panel 150 further includes a first storage capacitor (storage capacitor; Cst) and a second storage capacitor. The first storage capacitor is electrically connected to the first pixel electrode 131 , and the second storage capacitor is electrically connected to the second pixel electrode 132 . Generally speaking, when performing image display, since the pixel voltage generates a feedthrough voltage (feedthrough voltage) after the scanning line is turned off, the liquid crystal 153 (shown in FIG. 1 ) located between the two substrates 151 and 152 feels The voltage drops. The magnitude of this voltage drop is related to the liquid crystal capacitor (Clc), storage capacitor and gate-drain capacitor (Cgd), and its expression is Among them, Vgh is the voltage when the gate is turned on; Vgl is the voltage when the gate is turned off. Since the ratio of the area of the slit in the first color pixel displaying blue is larger than that of the red and green color pixels in this embodiment, the liquid crystal capacitance in the first color pixel is smaller than that of the red and green color pixels. Furthermore, according to the following relation: To maintain the feedthrough voltages in the first color pixel, the second color pixel and the third color pixel at a certain value, the storage capacitor and the gate-drain capacitor in each color pixel need to have different designs. The following describes the two situations:

First, when the ratio of the storage capacitance of each color pixel to the liquid crystal capacitance is a certain value, since the liquid crystal capacitance and the first storage capacitance of the first color pixel (displaying blue) are smaller than the rest of the color pixels (displaying red and green), therefore The sum of storage capacitance and liquid crystal capacitance in the first color pixel is smaller than red and green, and the gate-drain capacitance in the first color pixel must also be smaller than the gate-drain capacitance in the second color pixel and third color pixel capacitor to maintain a certain feedthrough voltage. That is to say, in this embodiment, the gate-drain capacitance of the first thin film transistor in the first color pixel is smaller than the gate-drain capacitance of the second thin film transistor;

Secondly, when the ratio of the storage capacitance to the liquid crystal capacitance of each color pixel is indeterminate, the condition for maintaining the same feed-through voltage for the three color pixels is that the individual (Cst+Clc)/Cgd is the same. Since the liquid crystal capacitance of the first color pixel (displaying blue) is smaller than that of red and green, if the ratio of (Cst+Clc)/Cgd of each color pixel is to be the same, the storage capacitance and gate-drain capacitance can be adjusted separately , depending entirely on demand.

Overall, if a certain feed-through voltage is to be maintained, and the ratio of the storage capacitance of each color pixel to the liquid crystal capacitance is a certain value, the capacitance between the gate and the drain must be designed so that the color pixel displaying blue is the smallest; Since the capacitance ratio is not constant, the storage capacitance and the gate-drain capacitance of each color pixel can be adjusted respectively according to requirements.

The above-mentioned liquid crystal display panel and the liquid crystal display device using the same according to the preferred embodiment of the present invention use the method that the electrodes in the pixels of different colors have different areas, and the proportions of the slits in the pixels of different colors are not the same, so that The grayscale curves of different color pixels can be matched and compensated, so that the display screen has substantially the same color temperature at different white grayscales, achieving the effect of white full grayscale and other color temperatures, and improving the display quality of the product. In addition, using the electrode layout to achieve the effect of reducing the color temperature shift can reduce the memory capacity required to change the display gray levels of different colors, and can reduce costs.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some modifications and improvements without departing from the spirit and scope of the present invention. Therefore, the present invention The scope of protection should be defined by the claims.

Claims (10)

1. a kind of liquid crystal display panel, including：

One first substrate；

Scan line, is arranged on the first substrate；

One first data wire and one second data wire, are arranged on the first substrate, and perpendicular to the scan line；

One first switch element, connects the scan line and first data wire；

One first pixel electrode, is electrically connected with the first switch element；

One second switch element, connects the scan line and second data wire；And

One second pixel electrode, is electrically connected with the second switch element；

Wherein, the area of first pixel electrode less than second pixel electrode area, first pixel electrode and Second pixel electrode has at least one first main slit (main slit) and at least one second main slit, described the respectively The edge that one pixel electrode corresponds to the described first main slit has multiple first times slit (fine slit), second picture The edge that plain electrode corresponds to the described second main slit has multiple second slit, and first pixel electrode corresponds to described The edge of the first main slit has more multiple first flanges, and first flange is sets spaced with the first time slit Put, the edge that second pixel electrode corresponds to the described second main slit has more multiple second flanges, second flange Be with the spaced setting of second slit, wherein the width of first flange is different in essence in second flange Width.

2. liquid crystal display panel as claimed in claim 1, it is characterised in that the width of first flange is substantially less than institute State the width of the second flange.

3. liquid crystal display panel as claimed in claim 1, it is characterised in that also include：

One first storage capacitors (storage capacitor), are electrically connected with first pixel electrode；And

One second storage capacitors, are electrically connected with second pixel electrode；

Wherein, first storage capacitors are less than second storage capacitors.

4. liquid crystal display panel as claimed in claim 1, it is characterised in that also include：

One second substrate, be arranged on the first substrate to；

One first common electrode, is arranged at the second substrate, and at least partly overlapped with first pixel electrode；With And

One second common electrode, is arranged at the second substrate, and at least partly overlapped with second pixel electrode.

5. liquid crystal display panel as claimed in claim 4, it is characterised in that first pixel electrode is common with described first The overlap of electrode closes area conjunction area overlap with second common electrode less than second pixel electrode.

6. a kind of liquid crystal display panel, including：

One first substrate；

Scan line, is arranged on the first substrate；

One first data wire and one second data wire, are arranged on the first substrate, and perpendicular to the scan line；

One first switch element, connects the scan line and first data wire；

One first pixel electrode, is electrically connected with the first switch element；

One second switch element, connects the scan line and second data wire；And

One second pixel electrode, is electrically connected with the second switch element；

Wherein, the area of first pixel electrode less than second pixel electrode area, first pixel electrode and Second pixel electrode has at least one first main slit (main slit) and at least one second main slit, described the respectively The edge that one pixel electrode corresponds to the described first main slit has multiple first times slit (fine slit), second picture The edge that plain electrode corresponds to the described second main slit has multiple second slit, and the width of the first time slit is substantial Different from the width of second slit.

7. liquid crystal display panel as claimed in claim 6, it is characterised in that the width of the first time slit is substantially greater than The width of second slit.

8. liquid crystal display panel as claimed in claim 6, it is characterised in that also include：

One first storage capacitors (storage capacitor), are electrically connected with first pixel electrode；And

One second storage capacitors, are electrically connected with second pixel electrode；

Wherein, first storage capacitors are less than second storage capacitors.

9. liquid crystal display panel as claimed in claim 6, it is characterised in that also include：

One second substrate, be arranged on the first substrate to；

One first common electrode, is arranged at the second substrate, and at least partly overlapped with first pixel electrode；With And

One second common electrode, is arranged at the second substrate, and at least partly overlapped with second pixel electrode.

10. liquid crystal display panel as claimed in claim 9, it is characterised in that first pixel electrode is common with described first The overlap of energization pole closes area conjunction area overlap with second common electrode less than second pixel electrode.