CN113838399A - Display panel and display device - Google Patents
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- CN113838399A CN113838399A CN202111076438.4A CN202111076438A CN113838399A CN 113838399 A CN113838399 A CN 113838399A CN 202111076438 A CN202111076438 A CN 202111076438A CN 113838399 A CN113838399 A CN 113838399A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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Abstract
The invention has described a kind of display panel and display device, including high light-transmitting area, wiring area and display area; the liquid crystal display panel comprises a data line and a scanning line, wherein the data line extends along a first direction, and the scanning line extends along a second direction; the data lines comprise at least one first-type data line, and the first-type data line comprises a first sub data line positioned in the display area and a second sub data line positioned in the wiring area; the length of the high light transmission region along the first direction is maximum to a first length L1, and along the second direction is maximum to a second length L2, wherein L1 is less than L2; in the second direction, the wiring area includes a center wiring area and an edge wiring area, a resistance value of the second sub data line unit length of the center wiring area is r1, and a resistance value of the second sub data line unit length of the edge wiring area is r2, where r1 < r 2. The unit length resistance of the second sub data lines with different lengths in the wiring area is adjusted, so that the load difference is favorably improved, and the display uniformity is improved.
Description
Technical Field
The present invention relates to the field of display, and in particular, to a display panel and a display device.
Background
With the innovation and development of display technologies, the display technologies are gradually closely related to our lives, such as traditional mobile phones, flat panels, televisions and PCs, and the current smart homes, smart wearable devices, VRs, vehicle-mounted displays and the like. In addition to the display function, in order to enrich the use experience, a plurality of functions such as face recognition, intelligent monitoring and other man-machine interaction are often integrated on the panel, that is, more hole areas need to be integrated on the panel. With the introduction of the holes, the wires which are originally regularly arranged on the display panel need to be arranged around the holes, so that the non-display frame around the holes is greatly increased; and display unevenness is easily caused due to the difference in load. Therefore, how to optimize the distribution of the traces around the holes in the display panel is an urgent technical problem to be solved in the art.
Disclosure of Invention
In view of the above, the present invention provides a display panel and a display device to solve the problem of display non-uniformity caused by different data line loads when the display panel has a high transmittance region in the prior art.
The invention describes a display panel comprising: the display device comprises a high-light-transmission area, a wiring area surrounding the high-light-transmission area and a display area surrounding the wiring area; the display panel further comprises data lines and scanning lines, wherein the data lines extend along a first direction, and the scanning lines extend along a second direction; the data lines comprise at least one first-type data line, and the first-type data line comprises a first sub data line positioned in the display area and a second sub data line positioned in the wiring area; the length of the high light transmission region along the first direction is maximum to a first length L1, and the length of the high light transmission region along the second direction is maximum to a second length L2, wherein L1 is less than L2; in the second direction, the wiring areas include a center wiring area near the center of the high-transmittance area and an edge wiring area far from the center of the high-transmittance area, the resistance value of the second sub-data line unit length of the center wiring area is r1, and the resistance value of the second sub-data line unit length of the edge wiring area is r2, wherein r1 < r 2.
Based on the same inventive concept, the invention also discloses a display device, which comprises the display panel.
Compared with the prior art, the display panel and the display device provided by the invention at least realize the following beneficial effects: when there is the high printing opacity district among the display panel, and the high printing opacity district is a structure of similar long cross bore, and the data line will carry out the wire winding when high printing opacity district is distinguished and handle, adjusts the resistance of wiring district different position data line through dividing the region, improves data line load difference, and then realizes the homogeneity that shows. The length difference of the data lines close to the center of the high light-transmitting area and far from the center of the high light-transmitting area in the wiring area is large, so that the load difference is caused, the length difference is compensated by adjusting the resistance of the data lines in unit length and the capacitance between the data lines, the load difference is improved, and the uniform brightness, namely uniform display, is realized.
Drawings
Fig. 1 is a schematic plan view of a display panel according to an embodiment of the present invention;
FIG. 2 is a schematic view of a portion of the enlarged structure of FIG. 1;
FIG. 3 is a schematic plan view of another display panel according to an embodiment of the present invention;
FIG. 4 is a schematic enlarged plan view of another display panel according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of the display panel BB' in FIG. 2;
FIG. 6 is a schematic cross-sectional view of the display panel BB' in FIG. 2;
FIG. 7 is a schematic cross-sectional view of the display panel BB' in FIG. 2;
FIG. 8 is a schematic cross-sectional view of the display panel BB' in FIG. 2;
FIG. 9 is a schematic cross-sectional view of the display panel BB' in FIG. 2;
FIG. 10 is a schematic cross-sectional view of the display panel BB' in FIG. 2;
FIG. 11 is a schematic cross-sectional view of the display panel BB' in FIG. 2;
FIG. 12 is a schematic cross-sectional view of the display panel BB' in FIG. 2;
fig. 13 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, the present invention is further described with reference to the accompanying drawings and examples.
It should be noted that in the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in a number of ways different from those described herein and similar generalizations can be made by those skilled in the art without departing from the spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below. The drawings are for the purpose of illustrating the principles of the invention more clearly and are not to be taken as limiting the specific values.
The inventors have found that, in a case where a circular hole is provided in a display panel, signal lines having different distances from the center of the hole have different winding lengths around the hole, and thus, the signal lines having different lengths cause a further load problem. However, for the circular hole, the number of the pixel units connected with the signal lines with different distances from the center of the hole is different, that is, the number of the pixel units connected with the signal lines with longer winding lines is relatively less, and the number of the pixel units connected with the signal lines with shorter winding lines is relatively more, so the two factors can complement each other, the load difference is reduced, and the uniformity of the display is improved.
However, if more functions are introduced into the display panel, more devices need to be placed, i.e., the area of the holes is relatively large. In order to optimize the position of the device and achieve the visual and aesthetic effect, a long transverse hole structure is adopted at present. In view of the above, the inventors of the present invention have proposed a display panel and a display device in the present invention, and the following detailed description will be made of specific inventive contents of the present invention.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic plan view of a display panel according to an embodiment of the present invention, and fig. 2 is a schematic partial enlarged view of fig. 1. The present embodiment provides a display panel 100, which includes: a high light transmission area AA3, a wiring area AA2 surrounding the high light transmission area AA3, a display area AA1 surrounding the wiring area AA2, and a non-display area NA;
the display panel comprises data lines 1 and scanning lines 2, wherein the data lines 1 extend along a first direction X, and the scanning lines 2 extend along a second direction Y;
the data line 1 includes at least one data line 12 of a first type, the data line 12 of the first type includes a first sub data line 121 located in the display area AA1 and a second sub data line 122 located in the wiring area AA 2;
the length of the high light transmission area AA3 is maximum at a first length L1 along the first direction X, and the length of the high light transmission area AA3 is maximum at a second length L2 along the second direction Y, wherein L1 < L2;
along the second direction Y, the wiring area AA2 includes a central wiring area AA21 close to the center C of the high-transmittance area and an edge wiring area AA22 far from the center C of the high-transmittance area, the resistance per unit length of the second sub-data line 122 of the central wiring area AA21 is r1, and the resistance per unit length of the second sub-data line 122 of the edge wiring area AA22 is r2, where r1 < r 2.
Specifically, the data line 1 extends in the first direction X, and is wound outside the high light transmission area AA3 to communicate the respective display areas separated by the high light transmission area AA 3. A data driving circuit (not shown) in the display panel supplies a signal to the data line 1 after the TFT switch is turned on, and charges the pixel electrode to a corresponding gray scale voltage, thereby implementing luminance display of the display panel. The inventor finds in research that the maximum length of the high light transmission area AA3 is the first length L1 along the first direction X, and the maximum length of the high light transmission area AA3 is the second length L2 along the second direction Y, wherein L1 < L2; that is, when the high-transmittance area AA3 is shaped like a long transverse hole, the difference between the number of pixels connected to the first sub data line 121 of the first type data line 12 near the center C of the high-transmittance area and the number of pixels connected to the first sub data line 121 of the first type data line 12 far from the center C of the high-transmittance area is small, so that the loads are substantially the same. However, because the length of the high light-transmitting area AA3 along the second direction Y is longer, the length of the second sub-data line 122 of the central wiring area AA21 of the wiring area AA2 close to the center C of the high light-transmitting area is longer than the length of the second sub-data line 122 of the edge wiring area AA22 far from the center C of the high light-transmitting area, and if the second sub-data line 122 of the central wiring area AA21 and the second sub-data line 122 of the edge wiring area AA22 are made of the same material, the resistance is different due to the difference in length, which further causes load difference, affects signal transmission, and causes uneven display brightness.
Since the display luminance unevenness in the display panel having the high light transmission area AA3 is mainly caused by the difference in the data line winding lengths at different positions, the inventors have proposed the following solutions to this problem: the resistance value r1 per unit length of the second sub-data line 122 of the center wiring area AA21 is set to be smaller than the resistance value r2 per unit length of the second sub-data line 122 of the edge wiring area AA 22. By the mode, the resistance value difference caused by the length of the data line can be reduced, so that the load difference can be improved, and the display uniformity can be improved.
It should be noted that, the central wiring area and the edge wiring area referred to in the present invention may also be understood as an area occupied when the first type data line closer to the center of the high-transmittance area extends to the wiring area, which is the central wiring area; when the first type data line far away from the center of the high light-transmitting area extends to the wiring area, the occupied area is the edge wiring area.
It should be noted that the high-transmittance region referred to in the present invention may be a common blind hole structure, or may be a position corresponding to a camera under a screen, and the present invention is not limited thereto, and the design in the present invention may be used in any region where interference such as diffraction is required to be less when a light signal is transmitted in a display panel. In the blind hole structure, the corresponding structure in the display panel needs to be hollowed, so that when the signal line passes through the blind hole, the winding is performed, and the design of the invention can be adopted. In a display panel like a screen camera, if the influence of diffraction of signal lines on the signals collected by a device in a high-light-transmission area is reduced, the number of the signal lines passing through the high-light-transmission area can be properly reduced, and the winding design is carried out. It should be noted that, in order to clearly illustrate the distribution of the data lines in the plan view, some of the drawings in the present invention omit the illustration of the scan lines.
Referring to fig. 3, fig. 3 is a schematic plan view of another display panel according to an embodiment of the present invention. In the present embodiment, the display area AA1 includes a plurality of pixels; in the first direction X, the number of pixels P1 connected by the first type of data lines passing through the central wiring area AA21 is equal to the number of pixels P2 connected by the first type of data lines passing at least partially through the edge wiring area AA 22.
In order to improve the light quality of the high transmittance region AA3, some film structures in the high transmittance region AA3 and the wiring region AA2 are usually omitted in the manufacturing process of the display panel. The film layer is generally manufactured through the steps of deposition, etching and the like, if the number of pixels P1 connected with the first type data lines of the central wiring area AA21 is equal to the number of pixels P2 connected with the first type data lines at least partially passing through the edge wiring area AA21, the rule degree of panel manufacturing can be improved, and the film layer manufacturing of the display panel with the shape tending to a long transverse hole in the high-light-transmittance AA3 area is facilitated; there is no need to fabricate the pixel structure at the arc position of the edge of the high light transmission area AA 3. Meanwhile, when the pixels are regularly arranged, the edge of the high light-transmitting area AA3 can be used for regularly arranging the wires, and the wiring area AA2 has a regular space and a large area, so that the wires are conveniently distributed, and the attractiveness of the display panel with the high light-transmitting area can be improved.
Referring to fig. 2, along the second direction Y, the length of the wiring area AA2 is L3, and the length of the edge wiring area AA22 is L4, where L4 is L3/4.
The wiring area AA2 is mainly divided into two parts, namely, a central wiring area AA21 and an edge wiring area AA22, according to the length of the second sub-data line, the film structure of the panel and the degree of process fabrication. In order to facilitate process accuracy control and to make the entire display in the vicinity of the high-transmittance region uniform, the center wiring region AA21 and the edge wiring region AA22 are equally divided in the second direction. As shown in fig. 2, the length of the wiring area AA2 is L3, the length of the edge wiring area AA22 is L4, and L4 is L3/4.
In other embodiments of the present invention, the display panel includes at least two metal layers, and the second sub-data line 122 of the central wiring area AA21 and the second sub-data line 122 of the edge wiring area AA22 are located at different metal layers.
In the display panel, the signal lines are various, such as scan lines, data lines, common electrode lines, touch electrode lines, and the like. Because the resistivity of metal is relatively small, the signal line is mostly made of metal. In the panel manufacturing process, different signal lines are arranged on different film layers according to the manufacturing process requirements and signals transmitted by the signal lines, and meanwhile, the panel can also be made of metals with different resistivities. The resistance value is calculated by the formula: where R is the signal line resistance, ρ is the resistivity, which depends on the material of the signal line, L is the length of the signal line, and S is the cross-sectional area of the signal line. The display brightness difference near the high light transmission area AA3 is caused by the load difference, and the resistance value is one of the main causes of the load; in the wiring area AA2 around the high-transmittance area, the length of the second sub-data line 122 in the central wiring area AA21 is greater than the length of the second sub-data line 122 in the edge wiring area AA 22; when the cross-sectional areas of the signal lines are the same, the difference in resistance between the second sub-data line 122 of the central wiring area AA21 and the second sub-data line 122 of the edge wiring area AA22 may be reduced by preparing signal lines with different resistivities. That is, the second sub-data line 122 of the central wiring area AA21 is made of a material with a relatively small resistivity, and the second sub-data line 122 of the edge wiring area AA22 is made of a material with a relatively large resistivity. It should be further understood that, in the display panel, the second sub-data line 122 in the central wiring area AA21 and the second sub-data line 122 in the edge wiring area AA22 are located in different metal layers, and may be made of the same metal material as that of the other signal lines in the layer.
In the above embodiment, the data lines in the wiring area are prepared by using some existing metal layers in the panel, and the display unevenness caused by the load difference is improved by the resistivity difference of different metal layers, so that the method is a simple and easy-to-operate implementation method without introducing excessive extra manufacturing processes.
It should be noted that, since the film structures of different display panels have certain differences and the numbers of the metal layers also have differences, which metal layers can be used to prepare the second sub-data lines can be selected by combining with the specific display panel structure, as long as it is ensured that the resistivities in the metal layers respectively prepared simultaneously with the second sub-data lines of the central wiring area and the second sub-data lines of the edge wiring area are different.
Referring to fig. 4, fig. 4 is a schematic plan view of a partial enlargement of another display panel according to an embodiment of the invention. In other embodiments of the present invention, the wiring area AA2 includes an overlapping wiring area AA23, the second sub-data line includes a first sub-segment and a second sub-segment, the first sub-segment is connected to the second sub-segment, and the second sub-segment is located in the overlapping wiring area;
a second sub-section 1221b connected to the first sub-section 1221a of the central wiring area AA21 is spaced from the center C of the high-transmittance area AA3 by z1, and a second sub-section 1222b connected to the first sub-section 1222a of the edge wiring area AA22 is spaced from the center C of the high-transmittance area AA3 by z2, wherein at least a portion z2 satisfies: z2 < z 1.
When the area of the high-transmittance area AA3 is large, the number of signal lines in the wiring area AA2 is correspondingly increased, and the area of the wiring area AA2 is increased, so that the area of the display area AA1 is reduced, and the overall visual effect of the display panel is affected. In order to reduce the area of the wiring area AA2, the overlapping wiring area AA23 is introduced, and when the second sub-data line 1222 of the edge wiring area AA22 and the second sub-data line 1221 of the center wiring area AA21 are located at different metal layers, it may be arranged that the two at least partially overlap in the overlapping wiring area. With reference to fig. 4, the second sub-data line includes a first sub-segment and a second sub-segment, and the first sub-segment is connected to the second sub-segment, wherein the second sub-segment is located in the overlapping wiring area; the C distance between the first subsection 1222a of the edge wiring area AA22 and the center of the high-transmittance area is larger than the C distance between the first subsection 1221a of the central wiring area AA21 and the center of the high-transmittance area; a second sub-section 1221b connected to the first sub-section 1221a of the central wiring area AA21 is spaced from the center C of the high-transmittance area AA3 by z1, and a second sub-section 1222b connected to the first sub-section 1222a of the edge wiring area AA22 is spaced from the center C of the high-transmittance area AA3 by z2, wherein at least a portion z2 satisfies: z2 < z 1. Because the second subdata line of wiring district can be located different metal levels, consequently set up the crossing that overlapping wiring district also can not produce the data line, can not influence the transmission of signal promptly to the area of reduction wiring district AA2 that can be very big, and then increase display area AA 1's area, promote display panel's visual effect.
Referring to fig. 2, fig. 5 and fig. 6 are schematic cross-sectional views of the display panel BB' in fig. 2, respectively. In some embodiments, the display panel includes a substrate 41, a first metal layer M1, and a second metal layer M2, which are sequentially disposed;
the scan line 43 is located in the first metal layer M1, and the first sub-data line is located in the second metal layer (not shown);
the second sub-data line 1222 of the edge routing area AA22 is located in the first metal layer M1, and the second sub-data line 1221 of the center routing area AA21 is located in the second metal layer M2.
In the existing film layer structure of the display panel, the resistivity of the scan line is usually larger than that of the data line, and in terms of material selection, the scan line is mostly made of Mo, and the data line is mostly made of Ti-Al-Ti. Referring to the structure of fig. 5, since the second sub-data line 1221 of the central wiring area AA21 is long, a material with relatively small resistivity is selected, and most of the data lines are disposed in the second metal layer M2, the second sub-data line 1221 of the central wiring area AA21 may be disposed in the second metal layer M2. Since the scan lines are mostly disposed in the first metal layer M1, the second sub-data lines 1222 of the edge wiring area AA22 may be disposed in the first metal layer M1. Fig. 5 is a schematic diagram of a conventional display panel film layer structure, and in other embodiments, the second sub data lines may be further disposed on other metal film layers. The film layer structure in fig. 5 includes in sequence: a substrate 41, a semiconductor layer 42, a first metal layer M1 (scan line), a second metal layer M2 (data line), a third metal layer M3 (common electrode line or touch electrode line), a first oxide conductor layer 46 (common electrode), and a second oxide conductor layer 47 (pixel electrode).
In fig. 6, in the third direction Z, second sub-data lines 122 disposed at different metal layers overlap at a wiring overlapping area AA 23; in conjunction with the embodiment shown in fig. 5, it can be seen that the area of the wiring area AA2 can be effectively reduced due to the introduction of the wiring overlapping area AA23 in fig. 6. Furthermore, from the viewpoint of overall distribution of signal lines of the display panel, the scan lines and the data lines are generally disposed in two approximately perpendicular directions, and when part of the second sub-data lines are disposed in the film layer where the scan lines are located, i.e., the first metal layer M1, there are no signal lines extending in the first direction X except a small number of scan lines extending in the second direction Y in the first metal layer M1, so that part of the second sub-data lines 122 can be disposed in the space of the first metal layer M1 by using the wiring area AA2 and overlap with the second sub-data lines 122 of the second metal layer M2, thereby reducing the area of the wiring area AA 2.
It should be noted that, in conjunction with fig. 4 and 6, it is sufficient to set the distance between the second sub-section 1221b connected to the first sub-section 1221a of the central wiring area AA21 and the center C of the high light-transmitting area AA3 to be smaller than the distance between the second sub-section 1222b connected to the first sub-section 1222a of the edge wiring area AA22 and the center C of the high light-transmitting area AA 3. The situation in fig. 6 where the second sub-segments 1221b and 1222b of different metal layers partially overlap in a direction perpendicular to the display panel, i.e. the third direction Z, is only one possible situation and is not a limiting condition. In the display panel, a first subdata line in the first-class data line is arranged on a second metal layer, if the second subdata line in the central wiring area is arranged on the first metal layer, the line needs to be changed at a position of the wiring area close to the display area, and the first subdata line and the second subdata line can be connected in a via hole mode in a common mode.
Referring to fig. 2 and 7, fig. 7 is a schematic cross-sectional view of another cross-sectional structure of the display panel BB' in fig. 2. In some embodiments, along the second direction Y and a direction pointing from the center C of the high light transmission area AA3 to the edge, the line width w2 of the second sub-data line 1222 of the edge wiring area AA22 is gradually narrowed, and/or the line width w1 of the second sub-data line 1221 of the center wiring area AA21 is gradually narrowed.
Due to the fact that the load and the display are uneven due to the fact that the lengths of the second sub data wires of the edge wiring area and the center wiring area are different, the second sub data wires of the edge wiring area and the center wiring area can be arranged on different metal layers and are made of metal materials with different resistivity, the whole resistance difference is improved, and the display uniformity is achieved. However, in the second sub-data lines adjacent to the edge wiring area and the central wiring area, the difference between the number of connected pixels and the winding length along the high-transmittance area is small, but the difference between the resistance values of the two sub-data lines is large, and a sudden change in brightness is easily generated at the boundary position between the edge wiring area and the central wiring area. That is, although the second sub-data lines are arranged in different areas to achieve the brightness uniformity of the entire edge wiring area and the central wiring area, there may be a difference in brightness at the area boundary. This can be achieved by further improving the resistance of the second sub data line.
The resistance value is calculated by the formula: where R is the signal line resistance, ρ is the resistivity, which depends on the material of the signal line, L is the length of the signal line, and S is the cross-sectional area of the signal line. When the cross-sectional area of the signal line is changed, the resistance value is also changed; namely, the resistance value can be adjusted by adjusting the line width of the second sub data line. In contrast, the resistance of second sub-data line 1221 of center wiring area AA21 near edge wiring area AA22 is greater than the resistance of second sub-data line 1222 of edge wiring area AA22 near center wiring area AA21, so that it is possible to set the line width w2 of second sub-data line 1222 of edge wiring area AA22 to be gradually narrower and/or the line width w1 of second sub-data line 1221 of center wiring area AA21 to be gradually narrower along the second direction Y and in a direction pointing from the center C of the high-transmittance area to the edge. It can be understood that, by making the line width w2 of the second sub-data line 1222 of the edge wiring area AA22 close to the central wiring area AA21 relatively larger (the resistivity ρ is relatively larger), and making the line width w1 of the second sub-data line 1221 of the central wiring area AA21 close to the edge wiring area AA22 relatively smaller (the resistivity ρ is relatively smaller), the resistance difference between the two can be reduced, and the abrupt change of the brightness at the interface in the display panel can be prevented.
The second sub-data line 1221 of the center wiring area AA21 may be further divided into a case close to the high-transmission area and a case far from the high-transmission area. If the length of the high-transmittance area AA3 along the second direction Y is longer, the length of the second sub-data line 1221 of the central routing area AA21 along the second direction Y and from the center C of the high-transmittance area to the edge is also decreased, and at this time, if the resistivity and the line width are the same, a slight difference in brightness is also generated in the central routing area AA 21. Based on the above situation, if the line width is further gradually reduced along with the reduction of the length of the second sub data line, the relative stability of the resistance value can be ensured, and the uniformity of the brightness is further realized. Based on the same idea, the line width w of the second sub-data line 1222 of the edge wiring area AA22 may be gradually narrowed along the second direction Y and from the center of the high-transmittance area to the edge.
It should be noted that, the number of the second sub-data lines with variable line widths can be selectively set according to the specific situation of the wiring area, and only the line width of the second sub-data line of the edge wiring area or only the width of the second sub-data line of the center wiring area can be selectively adjusted.
Referring to fig. 2 and 8, fig. 8 is a schematic cross-sectional view of another cross-sectional structure of the display panel BB' in fig. 2. In some embodiments, in the second direction Y and the direction pointing from the center C of the high light transmission area AA3 to the edge, the spacing d2 between the second sub-data lines 1222 of the edge wiring area AA22 becomes gradually smaller, and/or the spacing d1 between the second sub-data lines 1221 of the center wiring area AA21 becomes gradually smaller.
Factors affecting the load of the signal line in the display panel include the influence of the capacitance in addition to the resistance value of the signal line itself. When the distance between two signal lines is small, the parasitic capacitance of the two signal lines is increased, which is equivalent to the increase of the load, and the transmission of signals is affected. Because the second sub-data lines at the adjacent positions of the edge wiring area and the central wiring area have smaller difference in the number of connected pixels and the winding length along the high-light-transmission area, but the difference in the resistance values of the two sub-data lines is large, and the sudden change of the brightness is easily generated at the junction position of the edge wiring area and the central wiring area. This problem can be improved by adjusting the spacing between the second sub-data lines. In the second direction Y and a direction pointing from the center C of the high light transmission area AA3 to the edge, the spacing d2 between the second sub-data lines 1222 of the edge wiring area AA22 becomes gradually smaller, and/or the spacing d1 between the second sub-data lines 1221 of the center wiring area AA21 becomes gradually smaller. It can be understood that the distance d2 between the second sub-data lines 1222 of the edge wiring area AA22 close to the center wiring area AA21 is relatively increased (the resistance value is relatively large), so that the load thereof is reduced; the distance d1 between the second sub data lines 1221 of the central wiring area AA21 near the edge wiring area AA22 is relatively decreased (the resistance value is relatively small), so that the load is increased, and the load difference between the second sub data lines at different positions is decreased by balancing the difference between the resistance and the capacitance, thereby preventing the sudden change of the brightness at the boundary in the display panel.
Referring to fig. 2 and 9, fig. 9 is a schematic cross-sectional view of another cross-sectional structure of the display panel BB' in fig. 2. In some embodiments, in the second direction Y and a direction pointing from the center C of the high light transmission area AA3 to the edge, the line width w2 of the second sub-data line 1222 of the edge wiring area AA22 gradually narrows, and the distance d2 between the second sub-data lines of the edge wiring area AA22 gradually decreases;
and/or line width w1 of second sub-data line 1221 of central wiring area AA21 gradually narrows, and spacing d1 between second sub-data lines 1221 of central wiring area AA21 gradually decreases.
The above detailed development describes the effect of the line width on the resistance, and the effect of the spacing between the second sub data lines on the capacitance, and the effect of the resistance and the capacitance on the load. In order to refine and improve the brightness difference caused by the load difference of the second sub-data lines of the wiring area, the adjustment from the angles of the line width and the space can be carried out simultaneously.
Referring to fig. 2 and 10, fig. 10 is a schematic cross-sectional view of another display panel BB' in the embodiment of fig. 2. In some embodiments, the display panel includes a substrate 41, a first metal layer M1, and a second metal layer M2, which are sequentially disposed;
the scan line 43 is located in the first metal layer M1, and the first sub data line 121 and the second sub data line 122 in the first type data line 12 are both located in the second metal layer M2.
In a common display panel, the first sub data 121 line in the first type data line 12 is located in the second metal layer M2, so that when the second sub data line 122 connected thereto is also disposed in the second metal layer M2, it is avoided that the signal line is replaced through a via hole, and the process complexity is prevented from increasing.
With continued reference to fig. 10, in some embodiments, the width w3 of the second sub-data line 1221 of the central routing area AA21 is greater than the width w4 of the second sub-data line 1222 of the edge routing area AA 22.
In the panel preparation process, the film layer structure is manufactured through a mask process, so when the first sub data line and the second sub data line are positioned on the same metal layer, the first sub data line and the second sub data line can be prepared by the same material in order to simultaneously adopt a mask process for preparation. According to the resistance value calculation formula, R is rho L/S, because the lengths of the second sub data wires of the central wiring area and the edge wiring area are different at the moment, if the resistance values are controlled to be approximately equal, the wire width can be adjusted. It can be understood that, since the length of the second sub-data line 1221 of the central wiring area AA21 is longer, the line width w3 can be adjusted to be wider; the second sub-data line 1222 of the edge wiring area AA22 is shorter in length, and the line width w4 can be adjusted to be narrower, so that the overall resistance difference is improved, and the uniformity of display is realized.
Referring to fig. 2 and fig. 11, fig. 11 is a schematic cross-sectional view of another cross-sectional structure of the display panel BB' in the embodiment of fig. 2. In some embodiments, the line width w5 of the second sub-data line 122 gradually narrows along the second direction Y and in a direction pointing from the center C of the high light transmission area AA3 to the edge.
Since the length of the second sub data line 122 becomes gradually shorter in the second direction Y and in a direction pointing from the center C of the high light transmission area AA3 to the edge, the line width w5 of the second sub data line 122 may be gradually narrowed; through the gradual change design of mutual compensation of the length and the line width, the resistance value difference of the second sub data lines of the final wiring area is reduced, and the uniformity of display is realized.
Referring to fig. 2 and 12, fig. 12 is a schematic cross-sectional view of another display panel BB' in the embodiment of fig. 2. In some embodiments, the spacing d5 between the second sub-data lines 122 is gradually decreased along the second direction Y and from the center C of the high light transmission area AA3 to the edge.
The length of the second sub data line is gradually shortened, the resistance is gradually reduced, and the load is also gradually reduced along the second direction and the direction from the center of the high light-transmitting area to the edge. Factors that affect the load include, in addition to resistance, capacitance. When the distance between two signal lines is small, the parasitic capacitance of the two signal lines is increased, which is equivalent to the increase of the load, and the transmission of signals is affected. In summary, the distance d5 between the second sub-data lines 122 may be gradually decreased along the second direction Y and from the center C of the high light transmission area AA3 to the edge. By balancing the difference between the resistors and the capacitors, the load difference between the second sub data lines at different positions is reduced, and the uniformity of display is realized.
Referring to fig. 13, fig. 13 is a schematic structural diagram of a display device 200 according to an embodiment of the present disclosure. The display device 200 provided in this embodiment includes the display panel 100 provided in the above embodiments of the present application. It should be understood that the display device 200 provided in the embodiment of the present invention may be a display device 200 with a display function, such as a computer, a television, a vehicle-mounted display device, a medium-sized or large-sized billboard, and the present invention is not limited thereto. The display device 200 provided in the embodiment of the present invention has the beneficial effects of the display panel 100 provided in the embodiment of the present invention, and specific reference may be made to the specific description of the display panel 100 in the foregoing embodiments, and the detailed description of the embodiment is not repeated herein.
Alternatively, the display device of the present invention is particularly suitable for medium and large size display products.
In summary, the display panel and the display device provided by the invention at least achieve the following beneficial effects:
when there is the high printing opacity district among the display panel, and the high printing opacity district is a structure of similar long cross bore, and the data line will carry out the wire winding when high printing opacity district is distinguished and handle, adjusts the resistance of wiring district different position data line through dividing the region, improves data line load difference, and then realizes the homogeneity that shows. The length difference of the data lines close to the center of the high light-transmitting area and far from the center of the high light-transmitting area in the wiring area is large, so that the load difference is caused, the length difference is compensated by adjusting the resistance of the data lines in unit length and the capacitance between the data lines, the load difference is improved, and the uniform brightness, namely uniform display, is realized.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (14)
1. A display panel, comprising: the display device comprises a high-light-transmission area, a wiring area surrounding the high-light-transmission area and a display area surrounding the wiring area;
the display panel further comprises data lines and scanning lines, wherein the data lines extend along a first direction, and the scanning lines extend along a second direction;
the data lines comprise at least one first-class data line, and the first-class data line comprises a first sub data line positioned in the display area and a second sub data line positioned in the wiring area;
the length of the high-light-transmission region along the first direction is maximum to a first length L1, and the length of the high-light-transmission region along the second direction is maximum to a second length L2, wherein L1 < L2;
along the second direction, the wiring areas comprise a center wiring area close to the center of the high light-transmitting area and an edge wiring area far away from the center of the high light-transmitting area, the resistance value of the unit length of the second sub-data line of the center wiring area is r1, the resistance value of the unit length of the second sub-data line of the edge wiring area is r2, and r1 is less than r 2.
2. The display panel according to claim 1, wherein the display region includes a plurality of pixels;
along the first direction, the number of pixels connected by the first type data lines passing through the central wiring area is equal to the number of pixels connected by the first type data lines at least partially passing through the edge wiring area.
3. The display panel according to claim 1, wherein along the second direction, the length of the wiring region is L3, and the length of the edge wiring region is L4, and L4 is L3/4.
4. The display panel according to claim 1, wherein the display panel comprises at least two metal layers, and the second sub-data line of the central wiring area and the second sub-data line of the edge wiring area are located on different metal layers.
5. The display panel of claim 4, wherein the wiring area further comprises an overlapping wiring area, the second sub-data line comprises a first sub-segment and a second sub-segment, the first sub-segment is connected to the second sub-segment, and the second sub-segment is located in the overlapping wiring area;
the distance between the second subsection connected with the first subsection of the central wiring area and the center of the high-light-transmission area is z1, the distance between the second subsection connected with the first subsection of the edge wiring area and the center of the high-light-transmission area is z2, wherein at least part of z2 satisfies: z2 < z 1.
6. The display panel according to claim 4, wherein the display panel comprises a substrate, a first metal layer, and a second metal layer, which are sequentially provided;
the scanning lines are located on a first metal layer, and the first sub data lines are located on a second metal layer;
the second sub-data line of the edge wiring area is located on the first metal layer, and the second sub-data line of the center wiring area is located on the second metal layer.
7. The display panel according to claim 4, wherein the line width of the second sub data line of the edge wiring area is gradually narrowed and/or the line width of the second sub data line of the center wiring area is gradually narrowed along the second direction and a direction from the center of the high-transmittance area to the edge.
8. The display panel according to claim 4, wherein in the second direction and a direction from the center of the high-transmittance area to the edge, the pitch between the second sub-data lines of the edge wiring area gradually decreases, and/or the pitch between the second sub-data lines of the center wiring area gradually decreases.
9. The display panel according to claim 4, wherein in the second direction and a direction from the center of the high-transmittance region to an edge, the line width of the second sub-data line of the edge wiring region is gradually narrowed, and the pitch between the second sub-data lines of the edge wiring region is gradually narrowed;
and/or the line width of the second sub-data lines of the central wiring area gradually narrows, and the space between the second sub-data lines of the central wiring area gradually narrows.
10. The display panel according to claim 1, wherein the display panel comprises a substrate, a first metal layer, and a second metal layer, which are sequentially provided;
the scanning lines are located on a first metal layer, and first sub data lines and second sub data lines of the first type of data lines are located on a second metal layer.
11. The display panel of claim 10, wherein the second sub-data line width of the central wiring area is greater than the second sub-data line width of the edge wiring area.
12. The display panel according to claim 10, wherein the second sub data line has a line width gradually narrowing in a second direction and a direction from a center of the high light transmission region to an edge.
13. The display panel of claim 10, wherein the second sub-data lines are gradually decreased in a second direction from the center of the high light-transmission region to the edge.
14. A display device characterized by comprising the display panel according to any one of claims 1 to 14.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024114194A1 (en) * | 2022-11-30 | 2024-06-06 | 京东方科技集团股份有限公司 | Display substrate and display device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015087474A (en) * | 2013-10-29 | 2015-05-07 | パナソニック株式会社 | Display panel device and electronic apparatus |
| CN108807426A (en) * | 2018-06-29 | 2018-11-13 | 厦门天马微电子有限公司 | A kind of array substrate and display panel |
| US20190043418A1 (en) * | 2017-08-02 | 2019-02-07 | Apple Inc. | Electronic Devices with Narrow Display Borders |
| CN110515247A (en) * | 2019-08-29 | 2019-11-29 | 武汉天马微电子有限公司 | Display panel and display device |
| CN111798784A (en) * | 2020-06-24 | 2020-10-20 | 上海中航光电子有限公司 | Display panel, driving method thereof and display device |
-
2021
- 2021-09-14 CN CN202111076438.4A patent/CN113838399B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015087474A (en) * | 2013-10-29 | 2015-05-07 | パナソニック株式会社 | Display panel device and electronic apparatus |
| US20190043418A1 (en) * | 2017-08-02 | 2019-02-07 | Apple Inc. | Electronic Devices with Narrow Display Borders |
| CN108807426A (en) * | 2018-06-29 | 2018-11-13 | 厦门天马微电子有限公司 | A kind of array substrate and display panel |
| CN110515247A (en) * | 2019-08-29 | 2019-11-29 | 武汉天马微电子有限公司 | Display panel and display device |
| CN111798784A (en) * | 2020-06-24 | 2020-10-20 | 上海中航光电子有限公司 | Display panel, driving method thereof and display device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024114194A1 (en) * | 2022-11-30 | 2024-06-06 | 京东方科技集团股份有限公司 | Display substrate and display device |
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