The present invention relates to the field of liquid crystal displays, and more particularly to a pixel electrode and a liquid crystal display (LCD) panel.
LCD devices are widely applied to human life and work, wherein the display effect of the LCD devices is affected by an LCD panel therein, such as visual angle, brightness and color, etc.
As shown in
One aim of the present invention is to provide a pixel electrode and an LCD panel which are available to improve the penetration rate of the LCD panel.
The aim of the present invention is achieved by the following technical schemes. A pixel electrode is provided with at least one gap which is inclined with respect to the edges of the pixel electrode, wherein both ends of each gap are extended to the edges of the pixel electrode; both sides of each gap are provided with a plurality of equal slits with a constant depth; both sides of the two end zones of each gap have a plurality of edge slits of which the bottom sections are extended to the edges of the pixel electrode; the end zones of each gap are also provided with a plurality of gradual slits which are gradually decreased in depth from the outer to the inner of the pixel electrode; and the depth of each gradual slit is greater than or equal to that of each equal slit.
Preferably, the bottom of the edge slits and the edges of the pixel electrode are parallel to each other and in one straight line. Thus, the edge slits can be disclinated on the edges of the pixel electrode at a constant depth difference to avoid producing the anomalous electric fields.
Preferably, the depth of the gradual slits is gradually decreased in the direction from the outer to the inner of the pixel electrode, so that the gradual slits can gradually transit the anomalous electric fields at the edges to the inner of the pixel. Thus, the anomalous disclination of the liquid crystal molecules is avoided.
Preferably, the gradual slits are disclinated in the mode that the depth is gradually decreased at a constant depth difference, so that the electric fields at the edges can be transited to the inner electric fields in a relatively mitigatory manner. Thus, the hidden veins caused by the anomalous disclination of the liquid crystal molecules are avoided.
Preferably, the depth difference is S/N, wherein, N refers to the number of the gradual slits; S refers to the distance from the opening of the slits on the common electrodes to the bottom of the equal slits on the pixel electrode within a pixel region in the LCD panel. The constant depth difference and the number of the gradual slits are determined as required to achieve the best optimization method.
Preferably, N=3, it is a better number for the gradual slits. Thus, the electric fields can obtain a better transition without increasing new anomalous electric fields.
Preferably, the gradual slits are disclinated in the mode that the depth is gradually decreased at an incremental depth difference, so that a more mitigatory transition mode can be obtained. It is better than the mode of constant depth difference.
Preferably, the number of the gradual slits is 4, and it is a better number for the gradual slits. Thus, the electric fields can obtain a better transition without increasing the new anomalous electric fields.
Preferably, the pixel electrode comprises two gaps disclinated symmetrically. This is a better disclination mode for the gaps. Thus, the tipping of liquid crystal molecules with a plurality of directions can be obtained to enhance the scope of the visual angle.
Preferably, on the pixel electrode, the gaps are disclinated in “” shape or “
” shape. This is a better disclination shape. Thus the tipping of liquid crystal with a plurality of directions can be formed to improve the scope of the visual angle.
An LCD panel comprises the common electrodes and a plurality of pixel electrodes arranged oppositely of any one of the above mentioned.
Preferably, the common electrodes are correspondingly provided with the slits which are correspondingly staggered with the pixel electrodes; the edge junctions of the common electrodes and the pixel electrodes are provided with extension structures for arranging slits at the edges; the edge slits of the pixel electrode correspond to the extension structures of the common electrodes; and the distance, from the bottom of the gradual slits of the pixel electrode to the corresponding slits of the common electrodes, is gradually reduced. The edge slits correspond to the slits on the extension structures to eliminate the anomalous electric fields among the slits and that of at the slit ends on extension structures. At the same time, the distance, from the gradual slits to the slits among the corresponding common electrodes, is gradually reduced. This can serve as a transition to make the electric fields at the edges slowly changed to correspond to the inner electric fields. Thus, the anomalous turnover of the liquid crystal is avoided and the penetration rate of pixel can be improved.
Preferably, the edge slits have a deepest boundary point slit, and the depth of the boundary point slit is greater than that of each equal slit. Only the depth of each edge slit is greater than that of each equal slit, the slits on the extension structures can be eliminated effectively.
Preferably, the depth of the boundary point slit is greater than S+D, wherein, S refers to the distance from the opening of the slits on the common electrodes to the bottom of the equal slits on the pixel electrode within a pixel region in the LCD panel; and D refers to the depth of the equal slits. In this way, the boundary point slit and other slits can extend to the edges of the pixel electrode to correspond to the slits on the transition segments of the common electrodes. Thus, the anomalous electric fields among the slits and that of at the slit edges herein can be effectively mitigated, and the reason is that the bottom of the edge slits is parallel to each other and in one straight line.
An LCD panel comprises common electrodes and a plurality of pixel electrodes arranged oppositely, wherein the common electrodes are correspondingly provided with the slits which are correspondingly staggered with the pixel electrodes; a saw tooth is formed between the adjacent common electrodes; edge junctions of the common electrodes and the pixel electrodes are provided with the extension structures for arranging slits at the edges; the pixel electrodes are provided with at least one gap which is inclined with respect to the edges of the pixel electrodes, and both ends of each gap extend to the edges of the pixel electrodes; both sides of the two end zones of each gap have a plurality of edge slits of which the bottom sections are extended to the edges of the pixel electrodes, and the edge slits of the pixel electrodes correspond to the extension structures of the common electrodes; and the extension structures and the saw tooth thereby extend to the equal slits of the pixel electrodes corresponding to the saw tooth. Thus, the distance from the saw tooth to the slits among the pixel electrodes is gradually reduced.
The present invention, by changing the depth of the slits at the edges of the pixel electrodes as well as that of on the both sides of the end of each gap, makes a part of slits in this region extend to the edges of the pixel electrodes to form the edge slits, so as to correspond to the slits on the extension structures of the common electrodes of the LCD panel and mitigate the anomalous electric fields among the slits and that of at the slit ends herein; at the same time, the gradual slits are formed on one side of each edge slit, so that the electric fields at the edges are gradually changed and transited to the electric fields within the pixels. Thus, the anomalous disclination of the liquid crystal molecules in this region can be avoided, the hidden veins herein can be reduced, and the penetration rate of pixel can be enhanced.
Wherein: 1. first junction; 2. second junction; 3. third junction; 4. fourth junction; 10. gap; 11. equal slit; 12. gradual slit; 13. edge slit; 14. boundary point slit; 17. connecting part; 100. pixel electrode; 200. common electrode; 210. extension structure.
The present invention will further be described in detail in accordance with the figures and the preferred examples.
Pixel electrodes of the present invention comprise at least one gap which is inclined with respect to the edges of the pixel electrodes. Both ends of each gap extend to the edges of the pixel electrodes; both sides of each gap are provided with a plurality of equal slits with a constant depth; both sides of the two end zones of each gap have a plurality of edge slits of which the bottom sections are extended to the edges of the pixel electrodes; the bottom of the edge slits are parallel to the edges of the pixel electrodes and in one straight line; and the end zones of each gap are also provided with a plurality of gradual slits which are gradually decreased in depth from the outer to the inner of the pixel electrodes, and the depth of each gradual slit is greater than or equal to that of each equal slit. In an LCD panel, the common electrodes is also provided with the slits which correspond to the equal slits, the edge slits as well as the gradual slits on the pixel electrodes and stagger with each other.
The preferred examples of the present invention are as shown in
In this example, as shown in
In the example, the number of the gradual slits can be determined as required, that is, the depth difference can be changed into S/N, wherein, N refers to the number of the gradual slits.
In the example, the pixel electrodes 100 are structurally optimized at the first junction 1, the second junction 2, the third junction 3, and the fourth junction 4. Taking the second junction 2 for example, the edge slits 13 are extended to the edges of the pixel electrodes 100 to mitigate the influence by the fringe field effect and the anomalous electric fields among the slits and that of at the slit ends on the extension structures 210 of the common electrodes 200; besides, a more mitigatory gradual area of the electric fields is formed through the gradual slits 12 to reduce the influence on the liquid crystal by the electric fields perpendicular to the slits. Identically, so do other junctions (the first junction, the third junction and the fourth junction). By mitigating the fringe field effect and forming the gradual electric fields, the anomalous disclination of the liquid crystal molecules at these junctions can be reduced to improve the penetration rate of pixel. For example,
A second example of the present invention is as shown in
In two examples of the present invention, the pixel electrodes comprise two symmetrical gaps which are disclinated in “” shape or “
” shape within the pixel electrodes. Thus, the tripping of liquid crystal molecules is formed in different directions to enhance the scope of the visual angle. Of course, the disclination mode of the gaps is not limited to this mode.
Of course, in addition to arranging the slits that can correspondingly be extended to the extension structures to mitigate the anomalous electric fields among the slits or that of at the slit ends of the extension structures on the pixel electrodes, the common electrodes can be designed like this mode as well. In the LCD panel, the common electrodes are provided with the slits of common electrodes which correspond to all slits on the pixel electrodes and stagger with each other to form a saw tooth pattern. Wherein, the saw tooth is located between two adjacent slits, and the saw tooth on the extension structures can extend to the directions of the corresponding slits on the pixel electrodes; at the same time, the saw tooth near the common electrode of the extension structure can be designed according to the design of the equal slits of the pixel electrodes corresponding to the saw tooth. Under this arrangement, the anomalous electric fields among the slits and that of at the slit ends on the extension structures can be eliminated and the electric fields herein also can be slowly changed and transited to the inner electric field of pixel. However, for the above-mentioned example, the mode has larger changes in technology, and relatively, the above-mentioned example has easier implementation mode and lower production cost.
The present invention is described in detail in accordance with the above contents with the specific preferred examples. However, this invention is not limited to the specific examples. For the ordinary technical personnel of the technical field of the present invention, on the premise of keeping the conception of the present invention, the technical personnel can also make simple deductions or replacements, and all of which should be considered to belong to the protection scope of the present invention.
Number | Date | Country | Kind |
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201110371616.6 | Nov 2011 | CN | national |
Filing Document | Filing Date | Country | Kind | 371c Date |
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PCT/CN2011/083335 | 12/2/2011 | WO | 00 | 12/15/2011 |