TWI745980B - Pixel structure - Google Patents

Abstract

The present invention provides a pixel structure, which uses a common electrode arranged above a pixel electrode, the common electrode is provided with a first slit, the first slit has a first edge and a second edge, the There is a first width between the first edge and the second edge, the pixel electrode has a first pixel edge located between the first edge and the second edge, the second edge and the first pixel There is a second width between the edges, and the first width is greater than or equal to the second width to improve the light penetration of the pixel structure.

Description

Pixel structure

The present invention relates to a pixel structure, in particular to a panel pixel structure that improves light penetration.

Thin film transistor liquid crystal display (Thin film transistor liquid crystal display, often referred to as TFT-LCD) is one of most liquid crystal displays. It uses thin film transistor technology to improve image quality. Thin film transistor liquid crystal displays are collectively referred to as LCDs. Active matrix LCDs are often used in TVs, flat-panel displays and projectors.

The thin-film transistor liquid crystal display panel can be regarded as a layer of liquid crystal sandwiched between two glass substrates. The upper glass substrate is with a color filter, and the lower glass has a transistor inlaid on it. When the current passes through the transistor, the electric field changes, causing the liquid crystal molecules to deflect, thereby changing the polarization of the light, and then using the polarizer to determine the light and dark state of the pixel. In addition, the upper glass is laminated with the color filter, so that each pixel contains three colors of red, blue, and green. These red, blue, and green pixels constitute the image on the panel. The thin-film transistor liquid crystal display panel There are many kinds of products used. Among them, there are more and more products using Fringe Field Switching (Fringe Field Switching) wide viewing angle technology, and future developments will become more frequent.

Fringe Field Switching (FFS, Fringe Field Switching) wide viewing angle technology, also known as boundary electric field switching wide viewing angle technology, the wide viewing angle technology is extended from the lateral electric field effect (IPS, In Plane Switching) display technology, which has low power consumption Electricity, high light transmittance, high brightness, fast response, no color shift, high color reproduction and other characteristics; edge electric field switching wide viewing angle technology and traditional Compared with the display technology, it has the advantages of low driving voltage, larger viewing angle, fast response speed, and higher brightness. Compared with the lateral electric field effect display technology, the fringe electric field switching wide viewing angle technology is more power-saving, and has transmittance and resolution. Advantages such as higher degrees.

However, there has not been a more detailed and overall study on the position of the pixel electrode corresponding to the electrode slit in the conventional technology to improve the fringe field switching (FFS) wide viewing angle technology display. However, although there are doubts about the previous design concept, there is no such thing. Therefore, the lack of penetration caused by the spot problem (Mura) caused by uneven light output on the panel optics will continue to affect the performance and reliability of the panel manufacturers’ terminal products. Therefore, the panel industry urgently needs an improvement Panel pixel structure design for light penetration.

In view of the above-mentioned problems of the prior art, the present invention provides a pixel structure in which the edge of the pixel electrode is arranged inside the slit of the common electrode, the slit has a first width, and the edge of the pixel electrode is connected to the The edge of the slit has a second width, and the first width is greater than or equal to the second width, and this structure provides a design for improving light penetration.

An object of the present invention is to provide a pixel structure in which the edge of the pixel electrode is arranged inside the slit of the common electrode, the slit of the common electrode has a first width, and the edge of the pixel electrode is connected to the slit of the common electrode. The edge of the slit has a second width, wherein the first width is greater than or equal to the second width, so that the structure improves light penetration.

In order to achieve the aforementioned objectives and effects, the present invention provides a pixel structure, which includes: a substrate, a first data line, a second data line, a pixel electrode, and a common electrode. The first data The line is arranged on a surface of the substrate, the second data line is arranged on the surface of the substrate corresponding to the first data line, and the pixel electrode is arranged on the surface of the substrate and is located on the first data line And the second data line, the common electrode is disposed above one of the pixel electrodes, the common electrode is disposed with a first slit, and the first slit is located A side of the first data line; wherein, the first slit has a first edge close to the first data line and a second edge far away from the first data line, and the first edge and the second There is a first width between the edges, the pixel electrode has a first pixel edge located between the first edge and the second edge, and a second pixel edge is located between the second edge and the first pixel edge. Width, the first width is greater than or equal to the second width; the use of this structure reduces the problem of reduced transmittance of the panel due to process deviation or setting errors.

In an embodiment of the present invention, the percentage of the second width divided by the first width is greater than or equal to 45% and less than or equal to 100%.

In an embodiment of the present invention, the first width is greater than or equal to 2 μm and less than or equal to 8 μm.

In an embodiment of the present invention, the common electrode is further provided with a second slit, and the second slit is provided between the first slit and the second data line.

In an embodiment of the present invention, the second slit has a third edge close to the second data line and a fourth edge far away from the second data line, and the third edge and the fourth edge are A third width between the pixel electrode, a second pixel edge located between the third edge and the fourth edge, and a fourth width between the fourth edge and the second pixel edge, The third width is greater than or equal to the fourth width.

In an embodiment of the present invention, the percentage of the fourth width divided by the third width is greater than or equal to 45% and less than or equal to 100%.

In an embodiment of the present invention, the common electrode is further provided with at least one middle slit, and the at least one middle slit is disposed between the first slit and the second slit.

In an embodiment of the present invention, the third width is greater than or equal to 2 μm and less than or equal to 8 μm.

1: Pixel structure

10: substrate

12: surface

20: The first data line

30: The second data line

40: Pixel electrode

402: first pixel edge

404: second pixel edge

50: Common electrode

52: The first slit

522: first edge

524: second edge

54: second slit

542: The Third Edge

544: The Fourth Edge

56: Middle slit

W1: first width

W2: second width

W3: third width

W4: Fourth width

Figure 1: It is a schematic diagram of the structure of the embodiment of the present invention; Figure 2: It is an enlarged schematic view of the structure of the first slit of the embodiment of the present invention; Figure 3: It is the width and penetration of the embodiment of the present invention Schematic diagram of transparency change; Fig. 4: It is a schematic diagram of other structures of the embodiment of the present invention; and Fig. 5: It is an enlarged schematic diagram of the second slit structure of the embodiment of the present invention.

In order to enable your reviewer to have a further understanding and understanding of the features of the present invention and the effects achieved, examples and accompanying descriptions are provided here. The description is as follows: The present invention provides a pixel structure that combines a pixel electrode A first pixel edge is disposed inside a first slit of a common electrode, the first slit has a first width, and the first pixel edge and the edge of the first slit have a second width , The first width is greater than or equal to the second width, and this structure solves the problem of insufficient light penetration of the conventional panel.

Please refer to Figure 1, which is a schematic structural diagram of an embodiment of the present invention. As shown in the figure, it is a pixel structure 1, which includes a substrate 10, a first data line 20, a second data line 30, A pixel electrode 40 and a common electrode 50; wherein, the first data line 20, the second data line 30, and the pixel electrode 40 are provided on a surface 12 of the substrate 10, and the first data line The lines 20, the second data line 30, a pixel electrode 40, and a common electrode 50 are arranged in plural and arranged at intervals to form an overall panel structure; in this embodiment, the pixel structure 1 is a fringe electric field switching (FFS ) Of the display panel.

Referring again to FIG. 1, as shown in the figure, in this embodiment, the first data line 20 is disposed on the surface 12 of the substrate 10, and the second data line 30 corresponds to the first data line 20 The pixel electrode 40 is arranged on the surface 12 of the substrate 10 so that the two are symmetrical to each other. The pixel electrode 40 is arranged on the surface 12 of the substrate 10 and located on the first data line 20 and the second data line 30 The common electrode 50 is disposed above one of the pixel electrodes 40, and the common electrode 50 is disposed with a first slit 52 corresponding to the position of the pixel electrode 40, and the first slit 52 is located in the first data One side of the line 20 is the slit where the common electrode 50 is closest to the first data line 20. The first slit 52 has a first edge 522 close to the first data line 20 and away from the first data A second edge 524 of the line 20, that is, the second edge 524 is closer to the second data line 30 than the first edge 522.

Referring again to Figures 1 and 2, Figure 2 is an enlarged schematic view of the first slit structure of the embodiment of the present invention. As shown in the figure, in this embodiment, the first edge 522 and the second edge 524 There is a first width W1 therebetween, and a side of the pixel electrode 40 close to the first data line 20 has a first pixel edge 402. The first pixel edge 402 is located between the first edge 522 and the first edge Between the two edges 524, there is a second width W2 between the second edge 524 and the first pixel edge 402. Because the conventional display panel has the pixel electrode 40 or the common electrode 50 during the manufacturing process, The deviation in the manufacturing process causes the panel to have defects on the display. Therefore, in order to prevent the position deviation of the pixel electrode 40 or the common electrode 50 from affecting the display quality of the panel, this embodiment further defines the first width W1 It is greater than or equal to the second width W2; wherein, the first width W1 of the first slit 52 may be greater than or equal to 2 μm and less than or equal to 8 μm.

，如圖所示，當S%於45%時，其穿透率T%約為93%，達到人眼難以分辨差異之光線穿透率，而當S%於100%時，穿透率T%開始些微下降並呈現趨緩，由此可知於一實施例中，該第二寬度W2除以該第一寬度W1之百分比大於等於45%並小於等於100%時，其可達到較佳之功效，再參閱圖示，當S%於70%時，其穿透率T%可達到接近100%，因此於另一實施例中，該第二寬度W2除以該第一寬度W1之百分比大於等於70%並小於等於100%，其可達到更佳之功效。 Please refer to FIG. 3, which is a schematic diagram of the width and transmittance changes of the embodiment of the present invention. As shown in the figure, the conventional display panel has the pixel electrode 40 or the common electrode 50 during the manufacturing process. The offset during the manufacturing process causes defects in the display of the panel. Therefore, in order to prevent the positional deviation of the pixel electrode 40 or the common electrode 50 from affecting the display quality of the panel, the pixel electrode 40 is further defined in this embodiment. The relationship with the edge of the common electrode 50, in order to obtain effective data and information, this embodiment uses the first width W1 of 3μm as a standard for analysis, as shown in Figure 3, the pixel electrode 40 is in the first narrow The light transmittance of the slit 52 is T%, and the percentage of the second width W2 divided by the first width W1 is S%, that is, formula (1):

, As shown in the figure, when S% is at 45%, the transmittance T% is about 93%, reaching a light transmittance that is difficult for the human eye to distinguish, and when S% is at 100%, the transmittance T % Begins to decrease slightly and appears to slow down. It can be seen that in one embodiment, when the percentage of the second width W2 divided by the first width W1 is greater than or equal to 45% and less than or equal to 100%, it can achieve a better effect. Referring again to the figure, when S% is at 70%, the transmittance T% can reach close to 100%. Therefore, in another embodiment, the percentage of the second width W2 divided by the first width W1 is greater than or equal to 70 % Is less than or equal to 100%, which can achieve better effects.

In this embodiment, the first pixel edge 402 of the pixel electrode 40 is disposed between the two edges of the first slit 52 where the common electrode 50 is disposed, so that the first slit 52 has the first width W1, the first pixel edge 402 and the second edge 524 of the first slit 52 have the second width W2, and the first width W1 is greater than or equal to the second width W2 to improve light penetration, and Reduce the problem of uneven light output, thereby improving the display quality of the panel.

Please refer to FIG. 4, which is a schematic diagram of another structure of the embodiment of the present invention. As shown in the figure, this embodiment is based on the structure of the above-mentioned embodiment, and a second slit 54 is provided in the common electrode 50. Two slits 54 are provided between the first slit 52 and the second data line 30. The second slit 54 is located on one side of the second data line 30. The common electrode 50 is closest to the second data line 30. The slit of the data line 30, the second slit 54 has a third edge 542 close to the second data line 30 and a fourth edge 544 far from the second data line 30, that is, the fourth edge 544 is compared The third edge 542 is close to the first data line 20.

Referring again to Figures 4 and 5, Figure 5 is an enlarged schematic view of the second slit structure of the embodiment of the present invention. As shown in the figure, in this embodiment, the third edge 542 and the third edge There is a third width W3 between the four edges 544, and the pixel electrode 40 has a second pixel edge 404 on a side close to the second data line 30, and the second pixel edge 404 is located on the third edge 542 There is a fourth width W4 between the fourth edge 544 and the second pixel edge 404 between the fourth edge 544 and the second pixel edge 404, which is the same as the relationship between the first slit 52 and the pixel electrode 40. The third width W3 of the two slits 54 is greater than or equal to the fourth width W4; in this embodiment, the third width W3 may be greater than or equal to 2 μm and less than or equal to 8 μm.

，該第二狹縫54與該第二畫素邊緣404之寬度及光線穿透率的關係，與上述該第一狹縫52之實施例相同，故不再贅述。 Following the above, in this embodiment, the relationship between the third width W3 and the fourth width W4 corresponds to the embodiment of the first slit 52, which is that the third width W3 corresponds to the first width W1. The fourth width W4 corresponds to the second width W2. As shown in Figure 3, the percentage of the fourth width W4 divided by the third width W3 is S%, that is, formula (2):

The relationship between the width and the light transmittance of the second slit 54 and the second pixel edge 404 is the same as that of the first slit 52 described above, so it will not be repeated.

Following the above, in this embodiment, the first width W1 of the first slit 52 and the third width W3 of the second slit 54 may be the same or different, for example, the first width W1 is 3 μm, the The third width W3 is 4 μm, or the first width W1 and the third width W3 are both 5 μm, and the present invention is not limited thereto.

Following the above, in this embodiment, the common electrode 50 is further provided with at least one middle slit 56 which is disposed between the first slit 52 and the second slit 54, and the at least one The number of middle slits 56 can be increased according to the design of the panel. In this embodiment, one middle slit 56 is taken as an example, and the present invention is not limited here. Among them, the at least one middle slit 56 in this embodiment is the light from the pixel The electrode 40 passes through the main area of the common electrode 50, that is, the main light source of the pixel structure 1.

In summary, according to the present invention, there will be more and more products using Fringe Field Switching (FFS, Fringe Field Switching) wide viewing angle technology in the future. Increasingly, therefore, in the design of the panel, more detailed design specifications are defined for the products of the subsequent fringe electric field switching wide-view technology, in order to avoid the problem of factory process deviation or the penetration drop caused by the design, namely The present invention provides a pixel structure in which the edge of the pixel electrode is arranged inside the slit near the data line included in the common electrode to define the first width of the slit of the common electrode, and the pixel electrode The second width between the edge of the slit and the edge of the slit improves the light transmittance and solves the problem of insufficient light transmittance of the conventional panel due to uneven light emission (Mura).

Therefore, the present invention is really novel, progressive, and available for industrial use. It should meet the patent application requirements of my country's patent law. Undoubtedly, I filed an invention patent application in accordance with the law. I pray that the Bureau will grant the patent as soon as possible.

However, the foregoing is only an embodiment of the present invention, and is not used to limit the scope of implementation of the present invention. Therefore, all the equivalent changes and modifications of the shape, structure, characteristics and spirit described in the scope of the patent application of the present invention are mentioned. All should be included in the scope of the patent application of the present invention.

1: Pixel structure

10: substrate

12: surface

20: The first data line

30: The second data line

40: Pixel electrode

402: first pixel edge

50: Common electrode

52: The first slit

522: first edge

524: second edge

54: second slit

W1: first width

W2: second width

Claims (6)

A pixel structure comprising: a substrate; a first data line arranged on a surface of the substrate; a second data line corresponding to the first data line arranged on the surface of the substrate; A pixel electrode disposed on the surface of the substrate and located between the first data line and the second data line; and a common electrode disposed above one of the pixel electrodes, and the common electrode is disposed A first slit, the first slit is located on one side of the first data line, the common electrode is further provided with a second slit, the second slit is provided between the first slit and the second data line Between; wherein, the first slit has a first edge close to the first data line and a second edge away from the first data line, and there is a first edge between the first edge and the second edge A width, the pixel electrode has a first pixel edge located between the first edge and the second edge, a second width between the second edge and the first pixel edge, the first width Greater than or equal to the second width, the second slit has a third edge close to the second data line and a fourth edge far away from the second data line, and there is between the third edge and the fourth edge A third width, the pixel electrode has a second pixel edge located between the third edge and the fourth edge, a fourth width between the fourth edge and the second pixel edge, and the first pixel edge The third width is greater than or equal to the fourth width. The pixel structure according to claim 1, wherein the percentage of the second width divided by the first width is greater than or equal to 45% and less than or equal to 100%. The pixel structure according to claim 1, wherein the first width is greater than or equal to 2 μm and smaller It is equal to 8μm. The pixel structure according to claim 1, wherein the percentage of the fourth width divided by the third width is greater than or equal to 45% and less than or equal to 100%. The pixel structure according to claim 1, wherein the common electrode is further provided with at least one middle slit, and the at least one middle slit is provided between the first slit and the second slit. The pixel structure according to claim 1, wherein the third width is greater than or equal to 2 μm and less than or equal to 8 μm.

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