CN110675735B - Special-shaped display panel and special-shaped display device - Google Patents
Special-shaped display panel and special-shaped display device Download PDFInfo
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- CN110675735B CN110675735B CN201910878325.2A CN201910878325A CN110675735B CN 110675735 B CN110675735 B CN 110675735B CN 201910878325 A CN201910878325 A CN 201910878325A CN 110675735 B CN110675735 B CN 110675735B
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Abstract
A special-shaped display panel is provided with a display area and a non-display area positioned on the periphery of the display area, wherein the display area comprises a central display area and a boundary display area positioned between the central display area and the non-display area, the central display area is provided with a plurality of first pixel units, the boundary display area is provided with a plurality of second pixel units, the shapes and the areas of each first pixel unit and each second pixel unit are the same, each first pixel unit is internally provided with a first pixel electrode, each second pixel unit is internally provided with a second pixel electrode, the first pixel electrode in each first pixel unit is provided with a plurality of first electrode strips, the second pixel electrode in each second pixel unit is provided with at least one second electrode strip, and the number, the inclination angle or the gap of the second electrode strips in each second pixel unit is different from the first electrode strips in each first pixel unit, the transmittance of each first pixel unit is made to be larger than that of each second pixel unit. The invention also provides a special-shaped display device.
Description
Technical Field
The invention relates to the technical field of display, in particular to a special-shaped display panel and a special-shaped display device.
Background
With the rapid development of the current display panel technology, the applications of electronic products are also being upgraded rapidly. People are increasingly demanding displays, especially for shaped displays, while bringing consumers with a high quality display experience. The special-shaped display improves the limitations of the conventional rectangular display, has been more and more widely applied, and has been successfully applied to wearable electronic devices such as watches, glasses, or smart bands. The shaped display typically has a shaped display area, such as a circle, a polygon, or even a shape with cut edges. Thus, the odd-shaped display presents more challenges than the conventional rectangular display, and also brings new problems.
Referring to fig. 1, the display panel includes a display area located at the center of the panel and a black matrix area located at the edge of the panel, and the display area of the display panel is in a circular structure. The display panel is provided with a pixel structure constituted by a plurality of pixel units 21. Because the display panel is of a special-shaped structure, the pixel units 22 located at the outermost edge of the display panel are prone to generate an edge sawtooth problem during display, which affects the image quality of the product.
Referring to fig. 2, the conventional method is to make the pixel unit 22 near the irregular edge smaller to be different from the pixel unit 21 in the display area. Although the jaggy feeling of the edge can be reduced by reducing the pixel unit 22 close to the irregular edge to a certain degree, the manufacturing cost is increased, the driving method needs to be modified, and the application range is reduced.
Disclosure of Invention
The invention aims to provide a special-shaped display panel, so that the saw tooth feeling of the special-shaped display panel at the outline is reduced, and the display effect is improved.
The invention provides a special-shaped display panel, which is provided with a display area and a non-display area positioned on the periphery of the display area, wherein the display area comprises a central display area and a boundary display area positioned between the central display area and the non-display area, the central display area is provided with a plurality of first pixel units, the boundary display area is provided with a plurality of second pixel units, the shapes and the areas of each first pixel unit and each second pixel unit are the same, each first pixel unit is internally provided with a first pixel electrode, each second pixel unit is internally provided with a second pixel electrode, the first pixel electrode in each first pixel unit is provided with a plurality of first electrode strips, the second pixel electrode in each second pixel unit is provided with at least one second electrode strip, and the second electrode strips in each second pixel unit are different from the first electrode strips in each first pixel unit in the number, the inclination angle or the gap, the transmittance of each first pixel unit is made to be larger than that of each second pixel unit.
Further, the number of the second electrode bars in each second pixel unit is smaller than the number of the first electrode bars in each first pixel unit.
Further, the number of the second electrode bars in each second pixel unit is gradually decreased in a direction from the central display region to the non-display region.
Further, the inclination angle of the second electrode bar in each second pixel unit is larger than that of the first electrode bar in each first pixel unit.
Further, the inclination angle of the second electrode bar in each second pixel unit gradually increases in a direction from the central display region to the non-display region.
Furthermore, the number of the second electrode strips in each second pixel unit is smaller than the number of the first electrode strips in each first pixel unit, and the inclination angle of the second electrode strips in each second pixel unit is larger than that of the first electrode strips in each first pixel unit.
Further, the number of the second electrode bars in each second pixel unit is gradually reduced in a direction from the central display area to the non-display area, and the inclination angle of the second electrode bars in each second pixel unit is gradually increased in a direction from the central display area to the non-display area.
Further, the number of the second electrode strips in each second pixel unit is the same as the number of the first electrode strips in each first pixel unit, the inclination angle of the second electrode strips in each second pixel unit is the same as the inclination angle of the first electrode strips in each first pixel unit, and the gap between adjacent second electrode strips in each second pixel unit is smaller than the gap between adjacent first electrode strips in each first pixel unit.
Further, the gaps between the adjacent second electrode bars within each second pixel unit are gradually decreased in a direction from the central display region to the non-display region.
The invention also provides a special-shaped display device which comprises the special-shaped display panel.
The embodiment of the invention adjusts the original pixel structure on the basis of the prior art, designs the first pixel unit in the central display area as the normal display brightness, and designs the second pixel unit in the boundary display area as the darker brightness, so that the transmittances are different, and the following beneficial effects can be realized:
1. the implementation mode is simple and easy to realize, and extra photomask cost is not required to be consumed;
2. the power load of the panel is not increased, the driving mode is not modified, and the application range is wide;
3. the flashing and display uniformity of the panel can be improved;
4. the edge sawtooth phenomenon of the special-shaped display panel can be effectively improved.
Drawings
Fig. 1 is a schematic plan view of a pixel unit of a special-shaped display panel in the prior art.
Fig. 2 is a schematic plan view of a part of pixel units of another prior art irregular display panel.
FIG. 3 is a schematic plan view of a pixel unit of the irregular-shaped display panel according to the first embodiment of the present invention.
Fig. 4 is a schematic plan view of a first pixel unit according to a first embodiment of the invention.
Fig. 5 is a schematic plan view of a second pixel unit according to the first embodiment of the invention.
FIG. 6 is a schematic plan view of a pixel electrode of the display panel according to the first embodiment of the present invention.
Fig. 7 is a schematic plan view of a second pixel unit according to a second embodiment of the present invention.
FIG. 8 is a schematic plan view of a pixel electrode of a display panel according to a second embodiment of the present invention.
Fig. 9 is a schematic plan view of a second pixel unit according to a third embodiment of the present invention.
FIG. 10 is a schematic plan view of a pixel electrode of a display panel according to a third embodiment of the present invention.
Fig. 11 is a schematic plan view of a second pixel unit according to a fourth embodiment of the invention.
FIG. 12 is a schematic plan view of a pixel electrode of a display panel according to a fourth embodiment of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects of the present invention will be made with reference to the accompanying drawings and examples.
First embodiment
FIG. 3 is a schematic plan view of a pixel unit of the irregular-shaped display panel according to the first embodiment of the present invention. Fig. 4 is a schematic plan view of a first pixel unit according to a first embodiment of the invention. Fig. 5 is a schematic plan view of a second pixel unit according to the first embodiment of the invention. FIG. 6 is a schematic plan view of a pixel electrode of the display panel according to the first embodiment of the present invention. Referring to fig. 3 to 6, the irregular-shaped display panel according to the first embodiment of the present invention includes a display area 11 and a non-display area 12 located at a periphery of the display area 11, the display area 11 includes a central display area 111 and a boundary display area 112 located between the central display area 111 and the non-display area 12, the central display area 111 includes a plurality of first pixel units 13, the boundary display area 112 includes a plurality of second pixel units 14, shapes and areas of each of the first pixel units 13 and each of the second pixel units 14 are the same, a first pixel electrode 15 is disposed in each of the first pixel units 13, a second pixel electrode 16 is disposed in each of the second pixel units 14, the first pixel electrode 15 in each of the first pixel units 13 includes a plurality of first electrode stripes 150, the second pixel electrode 16 in each of the second pixel units 14 includes at least one second electrode stripe 160, the second electrode stripes 160 in each of the second pixel units 14 include a plurality of stripes, The first electrode stripes 150 in each first pixel unit 13 are different in inclination angle or gap, so that the transmittance of each first pixel unit 13 is greater than that of each second pixel unit 14.
Specifically, the non-display area 12 is covered with a black matrix (not shown) to make the non-display area 12 completely opaque. Thus, the odd-shaped display panel is displayed through the display area 11 (i.e., the central display area 111 and the boundary display area 112).
Specifically, the shape of each first pixel unit 13 and the shape of each second pixel unit 14 may be both rectangular structures, and the areas of the two are the same as each other.
Specifically, a slit 151 is formed between adjacent first electrode stripes 150 within each first pixel unit 13. If the number of the second electrode bars 160 in each second pixel unit 14 is greater than 1, a slit 161 is formed between adjacent second electrode bars 160 in each second pixel unit 14.
Specifically, the first pixel electrode 15 in each first pixel unit 13 and the second pixel electrode 16 in each second pixel unit 14 are different in structure, so that the transmittance of each first pixel unit 13 is greater than that of each second pixel unit 14, that is, the transmittance of the first pixel unit 13 in the central display region 111 is greater than that of the second pixel unit 14 in the boundary display region 112. In this way, if the first pixel unit 13 displays normal brightness, the brightness of the second pixel unit 14 is darker than that of the first pixel unit 13, and thus the jaggy at the boundary is buffered due to the brightness difference, so that the jaggy at the boundary contour is reduced, thereby improving the display effect.
In order to make the transmittance of the first pixel unit 13 of the central display region 111 greater than the transmittance of the second pixel unit 14 of the boundary display region 112, the difference between the first pixel electrode 15 and the second pixel electrode 16 may be embodied in the number of electrode strips, the inclination angle or the gap, that is, the second electrode strip 160 in each second pixel unit 14 is different from the first electrode strip 150 in each first pixel unit 13 in the number of electrode strips, the inclination angle or the gap.
In the present embodiment, referring to fig. 4, fig. 5 and fig. 6, the number of the second electrode stripes 160 in each second pixel unit 14 is smaller than the number of the first electrode stripes 150 in each first pixel unit 13. Further, the number of the second electrode bars 160 in each of the second pixel units 14 is gradually decreased in a direction from the central display region 111 to the non-display region 12.
For example, the number of the first electrode bars 150 in each first pixel unit 13 is 5, and the number of the second electrode bars 160 in each second pixel unit 14 is 2 to 4, i.e., the number of the second electrode bars 160 in each second pixel unit 14 is gradually reduced from 4 to 2 in the direction from the central display region 111 to the non-display region 12.
| Transmittance of pixel cell S (%) | Number of electrode strips | Displaying gray scale |
| S＝0 | BM | BM |
| 0＜S＜40 | 2 | 165 |
| 40＜S＜77 | 3 | 199 |
| 77＜S＜100 | 4 | 236 |
| S＝100 | 5 | 255 |
As can be seen from the above table, assuming that the number of the first electrode bars 150 is 5 and the corresponding transmittance S is 100, when the number of the second electrode bars 160 is gradually decreased from 4 to 2, the corresponding transmittance S is gradually decreased, i.e., the brightness is gradually decreased.
Taking three adjacent second pixel units 14 as an example, the number of the second electrode bars 160 in one second pixel unit 14 close to the central display area 111 is 4, the number of the second electrode bars 160 in one second pixel unit 14 close to the non-display area 12 is 2, and the number of the second electrode bars 160 in the middle one second pixel unit 14 is 3. That is, the number of the second electrode stripes 160 in the three second pixel units 14 is 4, 3, and 2 in sequence along the direction from the central display area 111 to the non-display area 12.
In other embodiments, if there are more than three second pixel units 14 in the boundary region, for example, if there are six second pixel units 14, the number of the second electrode bars 160 in the six second pixel units 14 may be, for example, 4, 3, 2, or may be, for example, 4, 3, 2, or other arrangements in sequence along the direction from the central display region 111 to the non-display region 12.
In one embodiment, the number of the second electrode bars 160 in the six second pixel units 14 along the direction from the central display area 111 to the non-display area 12 may also be, for example, 4, 3, 2 in sequence, that is, the number of the second electrode bars 160 in the second pixel units 14 does not strictly adhere to the arrangement rule of gradually decreasing in the direction from the central display area 111 to the non-display area 12, and it is also possible to satisfy the condition that the number of the second electrode bars 160 in each second pixel unit 14 is gradually decreasing in the direction from the central display area 111 to the non-display area 12 as a whole.
Second embodiment
Fig. 7 is a schematic plan view of a second pixel unit according to a second embodiment of the present invention. FIG. 8 is a schematic plan view of a pixel electrode of a display panel according to a second embodiment of the present invention. Referring to fig. 3 to 4 and fig. 7 to 8, in the irregular display panel according to the second embodiment of the present invention, the inclination angle of the second electrode bar 160 in each second pixel unit 14 is greater than the inclination angle of the first electrode bar 150 in each first pixel unit 13. Further, the inclination angle of the second electrode bar 160 in each second pixel unit 14 is gradually increased in a direction from the central display region 111 to the non-display region 12. The inclination angle here refers to the angle of the electrode strips from the vertical.
For example, the inclination angle of the first electrode bar 150 in each first pixel unit 13 is 7 °, and the inclination angle of the second electrode bar 160 in each second pixel unit 14 is 17 ° to 57 °, i.e., the inclination angle of the second electrode bar 160 in each second pixel unit 14 may gradually increase from 17 ° to 57 ° in a direction from the central display region 111 to the non-display region 12.
| Transmittance of pixel cell S (%) | Angle of electrode strip (°) | Displaying gray scale |
| S＝0 | BM | BM |
| 0＜S＜19 | 57 | 127 |
| 19＜S＜39 | 47 | 192 |
| 39＜S＜59 | 37 | 210 |
| 59＜S＜87 | 27 | 232 |
| 87＜S＜100 | 17 | 244 |
| S＝100 | 7 | 255 |
As can be seen from the above table, assuming that the corresponding transmittance S is 100 when the inclination angle of the first electrode bars 150 is 7 °, the corresponding transmittance S gradually decreases, i.e., the brightness gradually becomes darker, when the inclination angle of the second electrode bars 160 gradually increases from 17 ° to 57 °.
Taking three adjacent second pixel units 14 as an example, the inclination angle of the second electrode bars 160 in one second pixel unit 14 close to the central display region 111 is 17 °, the inclination angle of the second electrode bars 160 in one second pixel unit 14 close to the non-display region 12 is 37 °, and the inclination angle of the second electrode bars 160 in the intervening one second pixel unit 14 is 27 °. That is, the inclination angles of the second electrode stripes 160 in the three second pixel units 14 are 17 °, 27 °, and 37 ° in order along the direction from the central display region 111 to the non-display region 12.
In other embodiments, if there are more than three second pixel units 14 in the boundary region, for example, if there are six second pixel units 14, the inclination angles of the second electrode stripes 160 in the six second pixel units 14 along the direction from the central display region 111 to the non-display region 12 may be, for example, 17 °, 27 °, 37 °, 47 °, 57 ° in sequence, or may be, for example, 17 °, 27 °, 37 °, 47 ° in sequence, or in other arrangements.
In one embodiment, the inclination angles of the second electrode stripes 160 in the six second pixel units 14 along the direction from the central display area 111 to the non-display area 12 may also be, for example, 17 °, 27 °, 37 °, 47 ° in sequence, that is, the inclination angles of the second electrode stripes 160 in the second pixel units 14 do not have to strictly comply with the arrangement rule that the inclination angles gradually increase in the direction from the central display area 111 to the non-display area 12, and it is also possible to satisfy the condition that the inclination angle of the second electrode stripe 160 in each second pixel unit 14 gradually increases in the direction from the central display area 111 to the non-display area 12 as a whole.
Third embodiment
Fig. 9 is a schematic plan view of a second pixel unit according to a third embodiment of the present invention. FIG. 10 is a schematic plan view of a pixel electrode of a display panel according to a third embodiment of the present invention. Referring to fig. 3 to 4 and 9 to 10, the irregular-shaped display panel according to the third embodiment of the present invention is equivalent to the first embodiment and the second embodiment, that is, the number of the second electrode bars 160 in each second pixel unit 14 is less than the number of the first electrode bars 150 in each first pixel unit 13, and the inclination angle of the second electrode bars 160 in each second pixel unit 14 is greater than the inclination angle of the first electrode bars 150 in each first pixel unit 13. Further, the number of the second electrode bars 160 in each of the second pixel units 14 is gradually decreased in a direction from the central display region 111 to the non-display region 12, and the inclination angle of the second electrode bars 160 in each of the second pixel units 14 is gradually increased in a direction from the central display region 111 to the non-display region 12.
For example, the number of the first electrode bars 150 in each first pixel unit 13 is 5, and the number of the second electrode bars 160 in each second pixel unit 14 is 2 to 4, i.e., the number of the second electrode bars 160 in each second pixel unit 14 is gradually reduced from 4 to 2 in the direction from the central display region 111 to the non-display region 12. Also, at the same time, the inclination angle of the first electrode bar 150 in each first pixel unit 13 is 7 °, and the inclination angle of the second electrode bar 160 in each second pixel unit 14 is 17 ° to 57 °, i.e., the inclination angle of the second electrode bar 160 in each second pixel unit 14 may gradually increase from 17 ° to 57 ° in a direction from the central display region 111 to the non-display region 12.
Taking three adjacent second pixel units 14 as an example, the number of the second electrode bars 160 in one second pixel unit 14 close to the central display area 111 is 4, the number of the second electrode bars 160 in one second pixel unit 14 close to the non-display area 12 is 2, and the number of the second electrode bars 160 in the middle one second pixel unit 14 is 3. That is, the number of the second electrode stripes 160 in the three second pixel units 14 is 4, 3, and 2 in sequence along the direction from the central display area 111 to the non-display area 12. And, at the same time, the inclination angle of the second electrode bar 160 in one second pixel unit 14 adjacent to the central display region 111 is 17 °, the inclination angle of the second electrode bar 160 in one second pixel unit 14 adjacent to the non-display region 12 is 37 °, and the inclination angle of the second electrode bar 160 in the intervening one second pixel unit 14 is 27 °. That is, the inclination angles of the second electrode stripes 160 in the three second pixel units 14 are 17 °, 27 °, and 37 ° in order along the direction from the central display region 111 to the non-display region 12.
In other embodiments, if there are more than three second pixel units 14 in the boundary region, for example, there are six second pixel units 14, the number and the inclination angle of the second electrode bars 160 in the six second pixel units 14 along the direction from the central display region 111 to the non-display region 12 may also be other arrangement manners, which is not described herein again.
Fourth embodiment
Fig. 11 is a schematic plan view of a second pixel unit according to a fourth embodiment of the invention. FIG. 12 is a schematic plan view of a pixel electrode of a display panel according to a fourth embodiment of the present invention. Referring to fig. 3 to 4 and fig. 11 to 12, in the irregular-shaped display panel according to the fourth embodiment of the present invention, the number of the second electrode bars 160 in each second pixel unit 14 is the same as the number of the first electrode bars 150 in each first pixel unit 13, the inclination angle of the second electrode bars 160 in each second pixel unit 14 is the same as the inclination angle of the first electrode bars 150 in each first pixel unit 13, and the gap between the adjacent second electrode bars 160 in each second pixel unit 14 is smaller than the gap between the adjacent first electrode bars 150 in each first pixel unit 13. Further, the gap between the adjacent second electrode bars 160 within each second pixel unit 14 is gradually decreased in the direction from the central display region 111 to the non-display region 12, or in other words, the width of the second electrode bars 160 within each second pixel unit 14 is gradually increased in the direction from the central display region 111 to the non-display region 12.
As can be seen from the above table, this embodiment can achieve improved jaggies by changing the width (denoted by W) of the electrode stripes 150/160 and the gap (i.e., the size of the slits 151/161, denoted by G) between the adjacent electrode stripes 150/160 while keeping the number of the electrode stripes and the inclination angle within the first and second pixel units 13 and 14 the same, as shown by simulation. The W/G ratio may range from 0.2 to 2, for example, the W/G of each first pixel unit 13 is 0.5, for example, three adjacent second pixel units 14 are taken as examples, the W/G of one second pixel unit 14 close to the central display area 111 is 1, the W/G of one second pixel unit 14 close to the non-display area 12 is 1.5, and the W/G of the middle one second pixel unit 14 is 1.25. That is, the W/G of the three second pixel cells 14 are 1, 1.25, 1.5 in order along the direction from the central display area 111 to the non-display area 12, and a good jaggy improvement effect can be achieved.
In summary, the embodiment of the present invention adjusts the original pixel structure based on the prior art, and designs the first pixel unit 13 located in the central display area 111 as the normal display brightness and designs the second pixel unit 14 located in the border display area 112 as the darker brightness, so that the transmittances thereof are different, and the following beneficial effects can be achieved:
1. the implementation mode is simple and easy to realize, and extra photomask cost is not required to be consumed;
2. the power load of the panel is not increased, the driving mode is not modified, and the application range is wide;
3. the flashing and display uniformity of the panel can be improved;
4. the edge sawtooth phenomenon of the special-shaped display panel can be effectively improved.
The invention also provides a special-shaped display device which comprises the special-shaped display panel of any embodiment.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (4)
1. A special-shaped display panel is provided with a display area (11) and a non-display area (12) located at the periphery of the display area (11), wherein the display area (11) comprises a central display area (111) and a boundary display area (112) located between the central display area (111) and the non-display area (12), the central display area (111) is provided with a plurality of first pixel units (13), the boundary display area (112) is provided with a plurality of second pixel units (14), the shapes and the areas of each first pixel unit (13) and each second pixel unit (14) are the same, each first pixel unit (13) is internally provided with a first pixel electrode (15), each second pixel unit (14) is internally provided with a second pixel electrode (16), the first pixel electrode (15) in each first pixel unit (13) is provided with a plurality of first electrode strips (150), the second pixel electrode (16) in each second pixel unit (14) is provided with a plurality of second electrode strips (160), and the inclination angle of the second electrode strip (160) in each second pixel unit (14) is larger than that of the first electrode strip (150) in each first pixel unit (13), the inclination angle of the second electrode strip (160) in each second pixel unit (14) is gradually increased in the direction from the central display area (111) to the non-display area (12), and the inclination angle of the second electrode strip (160) is 17-57 degrees.
2. The profiled display panel according to claim 1, characterized in that the number of second electrode strips (160) within each second pixel cell (14) is smaller than the number of first electrode strips (150) within each first pixel cell (13).
3. The shaped display panel according to claim 1, wherein the number of second electrode stripes (160) within each second pixel cell (14) decreases gradually in a direction from the central display area (111) to the non-display area (12).
4. A shaped display device comprising a shaped display panel as claimed in any one of claims 1 to 3.
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