CN115799245A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN115799245A CN115799245A CN202211458170.5A CN202211458170A CN115799245A CN 115799245 A CN115799245 A CN 115799245A CN 202211458170 A CN202211458170 A CN 202211458170A CN 115799245 A CN115799245 A CN 115799245A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/18—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof the devices being of types provided for in two or more different subgroups of the same main group of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N
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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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Abstract
The invention discloses a display panel and a display device. The adjacent sub-binding regions of the display panel are respectively a first sub-binding region and a second sub-binding region; the fan-out line which is electrically connected with the binding pad which is nearest to the second sub-binding region in the first sub-binding region is the ith fan-out line; a fan-out line which is correspondingly and electrically connected with the nearest binding pad of the first sub-binding region in the second sub-binding region is a j-th fan-out line; the jth fanout line comprises a jth straight line segment; the ith fanout line comprises an ith broken line segment; an included angle between the first part of the ith broken line segment and the jth straight line segment is smaller than a first included angle threshold value, and the difference value between the included angle between the second part of the ith broken line segment and the second direction and the included angle between the jth straight line segment and the second direction is smaller than a second included angle threshold value; the length difference value of the jth straight line segment and the ith broken line segment is smaller than a preset length value; along the direction deviating from the second sub-binding region, the included angle between the first part and the second part of each fanout line comprising the first part and the second part is gradually increased.
Description
The present application is a divisional application of application No. 202011384842.3, application date 2020, 11/30, entitled "a display panel and display device".
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a display panel and a display device.
Background
In a conventional display device, a driving chip is required to provide a signal to a display region of a display panel through a fan-out line to drive the display panel for displaying.
Due to the positions of the signal lines of the driving chip and the display area, the lengths of fan-out lines from the output pins of the driving chip to the signal lines of the display area are different. Especially, when a plurality of driving chips are arranged, the impedance of each fan-out line corresponding to the same driving chip is slightly different, but the impedance difference of two adjacent fan-out lines of adjacent driving chips is large, so that the impedance mutation occurs, the waveform of the transmitted signal is seriously distorted, the problems of split screen and the like occur on the display panel, and the quality of the display picture is influenced.
Disclosure of Invention
The embodiment of the invention provides a display panel and a display device, and solves the problem that in the prior art, partial adjacent fan-out lines have large impedance difference, so that the display panel is split.
In a first aspect, an embodiment of the present invention provides a display panel, where the display panel includes a display area and a non-display area, the non-display area includes a fan-out area and a binding area, and the display area, the fan-out area, and the binding area are sequentially arranged along a first direction; along a second direction, the binding region comprises at least two sub-binding regions, and gaps are formed between the adjacent sub-binding regions; the first direction intersects the second direction;
the fan-out area is provided with a plurality of fan-out lines; the binding area is provided with a plurality of binding pads; the fan-out lines are electrically connected with the binding pads in a one-to-one correspondence manner; the adjacent sub-binding regions are respectively a first sub-binding region and a second sub-binding region;
in the fanout lines which are electrically connected with the binding pads of the first sub-binding region in a one-to-one correspondence manner along the direction departing from the second sub-binding region, at least continuous part of the fanout lines are broken line segments comprising a first part and a second part;
the fan-out line in the first sub-binding region, which is correspondingly and electrically connected with the binding pad nearest to the second sub-binding region, is an ith fan-out line; the fan-out line in the second sub-binding region, which is correspondingly and electrically connected with the binding pad nearest to the first sub-binding region, is a jth fan-out line;
the jth fanout line comprises a jth straight line segment; the ith fanout line comprises an ith broken line segment; an included angle between the first part of the ith broken line segment and the jth straight line segment is smaller than a first included angle threshold value, and a difference value between an included angle between the second part of the ith broken line segment and the second direction and an included angle between the jth straight line segment and the second direction is smaller than a second included angle threshold value; the length difference value of the jth straight line segment and the ith broken line segment is smaller than a preset length value;
along the direction deviating from the second sub-binding region, the included angle between the first part and the second part of each fanout line comprising the first part and the second part is gradually increased, so that the resistance difference value of two adjacent fanout lines is smaller than a preset resistance value.
In a second aspect, an embodiment of the present invention further provides a display device, including: the display panel of the first aspect.
In the display panel and the display device provided by the embodiments of the present invention, the adjacent sub-bonding regions are a first sub-bonding region and a second sub-bonding region, respectively. And in the fanout lines which are electrically connected with the binding pads of the first sub-binding region in a one-to-one correspondence manner along the direction departing from the second sub-binding region, at least continuous parts of the fanout lines are arranged to be broken line segments comprising a first part and a second part. A fanout line in the first sub-binding region, which is correspondingly and electrically connected with the nearest binding pad of the second sub-binding region, is an ith fanout line; a fan-out line which is correspondingly and electrically connected with the nearest binding pad of the first sub-binding region in the second sub-binding region is a j-th fan-out line; the jth fanout line comprises a jth straight line segment; the ith fanout line comprises an ith broken line segment; an included angle between the first part of the ith broken line segment and the jth straight line segment is smaller than a first included angle threshold value, and the difference value between the included angle between the second part of the ith broken line segment and the second direction and the included angle between the jth straight line segment and the second direction is smaller than a second included angle threshold value; the length difference value of the jth straight line segment and the ith broken line segment is smaller than a preset length value; along the direction deviating from the second sub-binding region, the included angle between the first part and the second part of each fan-out line comprising the first part and the second part is gradually increased, so that the resistance difference value of two adjacent fan-out lines is smaller than a preset resistance value. Through the arrangement, the length difference between the jth fanout line and the ith fanout line is reduced, and further the impedance mutation between the jth fanout line and the ith fanout line can be avoided.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:
FIG. 1 is a schematic diagram of a display panel in the prior art;
FIG. 2 is a diagram illustrating the variation of the impedance of a fan-out line in the prior art;
fig. 3 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 4 is an enlarged view of the AA region of FIG. 3;
FIG. 5 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a circular display panel according to the present invention;
FIG. 8 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of another display panel according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of another display panel according to an embodiment of the disclosure;
fig. 12 is a schematic structural diagram of a display device according to an embodiment of the present invention;
FIG. 13 is a schematic diagram of a display device according to another embodiment of the present invention;
fig. 14 is a schematic structural diagram of another display device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be fully described by the detailed description with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, not all embodiments, and all other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without inventive efforts fall within the scope of the present invention.
Fig. 1 is a schematic structural diagram of a display panel in the prior art, and as shown in fig. 1, the display panel includes a plurality of driving chips, and in fig. 1, 2 driving chips are exemplarily provided, which are a driving chip IC1 and a driving chip IC2 respectively. The driving chip IC1 and the driving chip IC2 are adjacent. Each signal line of the display area needs to be electrically connected with each port of the driving chip through the fanout line. In each fan-out line and the driver chip IC correspondingly connected to the driver chip IC1, two adjacent fan-out lines electrically connected to different driver chips are respectively the nth fan-out line and the n +1 th fan-out line in fig. 1. Because a gap is formed between the driving chip IC1 and the driving chip IC2, the length difference between the n-th fanout line and the n + 1-th fanout line is large, and therefore the impedance difference between the n-th fanout line and the n + 1-th fanout line is also large. Fig. 2 is a schematic diagram of the impedance change of the fanned-out line, and referring to fig. 2, the impedance between the nth fanned-out line and the n +1 th fanned-out line changes abruptly. Because the impedance difference between the n-th fanout line and the n + 1-th fanout line is relatively large, the transmitted signal distortion is serious, the screen splitting phenomenon of the display panel is easily caused, and the display effect is influenced.
In view of this, embodiments of the present invention provide a display panel. Fig. 3 is a schematic structural diagram of a display panel according to an embodiment of the present invention, and as shown in fig. 3, the display panel according to the embodiment of the present invention includes a display area 10 and a non-display area 20. The non-display area 20 includes a fan-out area 21 and a binding area 22. The display area 10, the fan-out area 21, and the bonding area 22 are sequentially arranged in the first direction X. Along the second direction Y, the binding region 22 includes at least two sub-binding regions with a gap between adjacent sub-binding regions. The first direction X intersects the second direction Y. Two sub-binding regions are exemplarily set in fig. 3, and adjacent sub-binding regions are respectively marked as a first sub-binding region 221A and a second sub-binding region 221B for convenience of description. The fan-out area 21 is provided with a plurality of fan-out lines 211. The bonding region 22 is provided with a plurality of bonding pads 222; the fan-out lines 211 are electrically connected with the bonding pads 222 in a one-to-one correspondence. The driving chip bound at the sub-binding region may transmit a desired signal to each signal line in the display region 10 through each fan-out line 211.
It should be noted that, in the embodiment of the present invention, each fan-out line may include, for example, a fan-out line for providing a data signal, a fan-out line for providing a gate scan signal, a fan-out line for providing a constant signal, a fan-out line for providing a power signal, and the like.
Fig. 4 is an enlarged view of the AA area in fig. 3 (within the oval dashed box area in fig. 3). In the fanout lines electrically connected with the bonding pads of the first sub-bonding region 221A in a one-to-one correspondence manner along a direction departing from the second sub-bonding region 221B, at least a continuous part of the fanout lines are broken line segments including the first portion 211A and the second portion 211B.
The fanout line in the first sub-bonding region 221A, which is electrically connected to the bonding pad nearest to the second sub-bonding region 221B, is the ith fanout line. The fanout line in the second sub-bonding region 221B, which is electrically connected to the bonding pad nearest to the first sub-bonding region 221A, is the jth fanout line.
The jth fanout line comprises a jth straight line segment, the ith fanout line comprises an ith broken line segment, and an included angle between the first portion 211A of the ith broken line segment and the jth straight line segment is smaller than a first included angle threshold value. In the embodiment of the present invention, the first portion 211A of the ith broken line segment is set to be as parallel as possible to the jth straight line segment, that is, when the included angle between the first portion 211A of the ith broken line segment and the jth straight line segment is smaller than the first included angle threshold, the first portion 211A of the ith broken line segment can be considered to be approximately parallel to the jth straight line segment.
The difference between the included angle theta 1 between the second part 211B of the ith broken line segment and the second direction Y and the included angle theta 2 between the jth straight line segment and the second direction Y is smaller than the second included angle threshold value. In the embodiment of the present invention, an included angle θ 1 between the second portion 211B of the i-th broken line segment and the second direction Y and an included angle θ 2 between the j-th straight line segment and the second direction Y are set to be as equal as possible, and if a difference between the included angle θ 1 between the second portion 211B of the i-th broken line segment and the second direction Y and the included angle θ 2 between the j-th straight line segment and the second direction Y is smaller than a second included angle threshold, it can be approximately considered that the included angle θ 1 between the second portion 211B of the i-th broken line segment and the second direction Y and the included angle θ 2 between the j-th straight line segment and the second direction Y are equal.
For the situation that the difference between the wiring lengths of the ith fanout line and the jth fanout line in the prior art is too large, the longer wiring of the jth fanout line keeps straight-pulling, namely the jth fanout line comprises a jth straight-line segment. The ith fanout line is designed to comprise an ith broken line segment. Wherein the first portion 211A of the ith broken line segment pulled out from the display area 10 is kept substantially parallel to the jth straight line segment. The length of the jth straight line segment is L1, and the length of the first portion 211A in the ith broken line segment is L2. The included angle θ 1 between the second portion 211B of the ith broken line segment and the second direction Y and the included angle θ 2 between the jth straight line segment and the second direction Y are substantially consistent, that is, θ 1= θ 2. The length of the second portion 211B in the ith broken line segment is L3. The arrangement can ensure that the length of the j-th straight line segment is basically the same as that of the i-th broken line segment, namely L1 is approximately equal to L2+ L3. Therefore, the sudden change of the impedance between the jth fanout line and the ith fanout line of two adjacent self-binding regions can be avoided. The length of the jth straight line segment mentioned in the embodiments of the present invention is substantially the same as that of the ith broken line segment, which means that the length difference between the jth straight line segment and the ith broken line segment is smaller than the tolerance range allowed by the product, for example, a preset length value is set, and if the length difference between the jth straight line segment and the ith broken line segment is smaller than the preset length value, the problem of an excessively large impedance difference between the jth fanned-out line and the ith fanned-out line can be avoided.
In the fanout lines exemplarily arranged in fig. 3 and 4 and electrically connected to the bonding pads of the first sub-bonding region 221A in a one-to-one correspondence manner along the direction departing from the second sub-bonding region 221B, 10 continuous fanout lines are broken line segments including the first portion 211A and the second portion 211B. Along the direction departing from the second sub-bonding region 221B, an included angle β between the first portion and the second portion of each fanout line including the first portion and the second portion gradually increases, so that a resistance difference value of two adjacent fanout lines is smaller than a preset resistance value. In the fanout lines electrically connected with the binding pads of the first sub-binding region 221A in a one-to-one correspondence manner along the direction departing from the second sub-binding region 221B, from the ith fanout line, each fanout line subsequently including a fold line end gradually increases the included angle β between the first portion and the second portion until the fanout line changes from the form of the fold line to a straight line segment.
In the embodiment of the invention, the ith fanout line of the adjacent sub-binding areas is set to comprise the ith broken line segment, the jth fanout line is set to comprise the jth straight line segment, the included angle between the first part of the ith broken line segment and the jth straight line segment is set to be smaller than the first included angle threshold, and the difference value between the included angle between the second part of the ith broken line segment and the second direction and the included angle between the jth straight line segment and the second direction is set to be smaller than the second included angle threshold, so that the length difference value between the jth straight line segment and the ith broken line segment can be smaller than the preset length value, and the problem of screen splitting caused by overlarge impedance difference between the ith fanout line and the jth fanout line can be avoided. In addition, the implementation of the invention also sets that the included angle between the first part and the second part of each fan-out line comprising the first part and the second part is gradually increased along the direction deviating from the second sub-binding region, so that the resistance difference value of two adjacent fan-out lines is smaller than the preset resistance value, and the overlarge impedance difference of each fan-out line corresponding to the same sub-binding region is avoided. The embodiment of the invention can finally enable the impedance of each fan-out line in the whole binding area to continuously and smoothly change, and avoid the problems of signal distortion and impression display effect caused by overlarge impedance difference of adjacent fan-out lines. In addition, each fanout line in the embodiment of the invention basically keeps a straight line or a broken line, and complex winding is not needed, so the design is simple, and the practicability is strong. Because no complex winding is needed, the parasitic capacitance generated by other circuits in the NAND display area can be avoided.
On the basis of the above embodiment, optionally, the first direction is perpendicular to the second direction. For example, the first direction is an extending direction of each data line of the display area, and the second direction is an extending direction of each scan line of the display area.
Optionally, the preset resistance value in each of the above embodiments is 500 Ω. In the embodiment of the present invention, the direction deviating from the second sub-binding region is set, the resistance difference value of adjacent fanout lines in each fanout line including the first portion and the second portion is smaller than the preset resistance value, and the resistance difference value of any adjacent fanout line in the whole binding region may also be set smaller than the preset resistance value, so that the impedance of each fanout line in the whole binding region continuously and smoothly changes.
Alternatively, the first included angle threshold may be set to 3 °, that is, when the included angle between the first portion 211A of the ith broken line segment and the jth straight line segment is less than 3 °, the first portion 211A of the ith broken line segment may be approximately considered to be parallel to the jth straight line segment.
Alternatively, the second angle threshold may be set to 5 °. When the difference between the included angle θ 1 between the second portion 211B of the ith broken line segment and the second direction Y and the included angle θ 2 between the jth straight line segment and the second direction Y is less than 5 °, it can be approximately considered that the included angle θ 1 between the second portion 211B of the ith broken line segment and the second direction Y is equal to the included angle θ 2 between the jth straight line segment and the second direction Y.
Optionally, an included angle between the first portion and the second portion of the same fanout line is greater than 90 °. If the first part and the second part are too small, the connection part of the first part and the second part is easy to break, so that the included angle between the first part and the second part of the same fanout line is larger than 90 degrees in the invention, so as to prevent the problem of line breaking.
In other embodiments, if the included angle between the first portion and the second portion of the same fanning-out line is less than or equal to 90 °, the first portion and the second portion may be connected by a third portion. The third part is a straight line segment, and the included angle between the first part and the third part and the included angle between the second part and the third part are larger than 90 degrees. As shown in fig. 5, if the included angle β between the first portion 211A and the second portion 211B of the same fanout line is smaller than 90 °, the first portion 211A is connected to the second portion 211B through the third portion 211C, the third portion 211C is a straight line segment, and both the included angle α 1 between the first portion 211A and the third portion 211C and the included angle α 2 between the second portion 211B and the third portion 211C are larger than 90 °.
In other embodiments, as shown in fig. 6, the third portion may also be provided as an arc. Further, a tangent line at the junction of the first portion 211A and the third portion 211C is parallel to the first portion 211A, and a tangent line at the junction of the second portion 211B and the third portion 211C is parallel to the second portion 211B. It should be noted that, in the embodiment of the present invention, the tangent line at the connection point of the first portion 211A and the third portion 211C is parallel to the first portion 211A, and the tangent line at the connection point of the second portion 211B and the third portion 211C is parallel to the second portion 211B, which means that the tangent line at the connection point of the first portion 211A and the third portion 211C and the first portion 211A are substantially parallel to each other, and the tangent line at the connection point of the second portion 211B and the third portion 211C and the second portion 211B are substantially parallel to each other within the product tolerance range.
When the included angle between the first part and the second part of the same fanout line is smaller than or equal to 90 degrees, the third part is arranged between the first part and the second part, so that the problem that the fanout line is easy to break due to the fact that the included angle between the first part and the second part is too small can be solved. The third part is a transition connecting line connected between the first part and the second part, and the setting length of the third part is very short and can be almost ignored, so that the effects of the embodiments can be realized, namely the length difference between the jth straight-line segment and the ith broken-line segment is smaller than the preset length value, and the problem of screen splitting caused by overlarge impedance difference between the ith fanned-out line and the jth fanned-out line is avoided. The resistance difference value of each fan-out line of two adjacent fan-out lines corresponding to the same sub-binding region is smaller than a preset resistance value, and the impedance of each fan-out line of the whole binding region changes continuously and slowly.
It should be noted that the display panel according to the embodiment of the present invention may be a display panel with a conventional shape, such as a rectangular or circular lamp, or may be a display panel with a special shape. Fig. 7 is a schematic structural diagram of a circular display panel according to the present invention. The setting of the fanout line corresponding to each sub-binding region in fig. 7 refers to the description of each embodiment, which is not repeated herein.
Fig. 8 is a schematic structural diagram of another display panel according to an embodiment of the present invention. Fig. 8 is a profiled display panel comprising an open area 30, the open area 30 being located between adjacent sub-bonding areas. For example, referring to fig. 8, the open area 30 is located between the first sub-bind region 221A and the second sub-bind region 221B. For a display panel applied to the field of vehicle-mounted devices, if a space needs to be set aside for other devices, an opening area needs to be generally arranged on the display panel to form a special-shaped shape. For example, in-vehicle buttons and the like are provided at the positions of the opening areas 30 of the display panel shown in fig. 8.
Alternatively, the fan-out area 21 may include a first fan-out area 212 and a second fan-out area 213. The first fan-out area 212 is located between the display area 10 and the opening area 30. The second fan-out area 213 is located within the open area 30, the sub-binding area, and the area surrounded by the first fan-out area 212. The first and second portions 211A and 211B are located in the first fan-out region 212. The fanout line further includes a fourth portion 211D, the fourth portion 211D being located within the second fanout region 213; the extending direction of the fourth portion 211D is parallel to the first direction X.
Since the opening region 30 is disposed between the adjacent sub-bonding regions of the display panel, the fan-out lines extending from the bonding pads of the bonding regions need to be first pulled upward by a certain distance along the first direction X in the second fan-out region 213, i.e., the fourth portion 211D is formed, and when the fan-out lines extend to the first fan-out region 212, a segment folding design is performed on a part of the fan-out lines.
In other embodiments, the fourth portion may also be angled from the first direction, for example as shown in fig. 9. An angle between the extending direction of the fourth portion 211D and the first direction is greater than 0 ° and smaller than 90 °. An included angle gamma 1 between the fourth part of the ith fanout line and the second direction Y is the same as an included angle gamma 2 between the fourth part of the jth fanout line and the second direction.
For the sake of comparison, the case where the fourth portion is parallel to the first direction and the angle between the extending direction of the fourth portion and the first direction is larger than 0 ° and smaller than 90 ° is compared in fig. 10. Referring to fig. 10, taking the jth straight line segment as an example, since the position of the signal line connected to the jth straight line segment in the display area is not changed, a certain included angle is set between the fourth portion 211D and the first direction X, and the projection length of the jth straight line segment in the first direction X is smaller than that when the fourth portion 211D is parallel to the first direction X (for comparison, in the case that the fourth portion 211D is parallel to the first direction X, the fourth portion and the jth straight line segment are set as dotted lines). As shown in fig. 10, when an angle between the extending direction of the fourth portion and the first direction is greater than 0 ° and smaller than 90 °, a projection length of the jth straight line segment in the first direction X is S2. When the fourth part is parallel to the first direction, the projection length of the j-th straight line segment in the first direction X is S1, and S2 is less than S1. Therefore, when the included angle between the extending direction of the fourth portion and the first direction is greater than 0 ° and smaller than 90 °, the length of the first sector area 212 along the first direction X is reduced, and therefore the length of the fan-out area 21 along the first direction X is reduced, and the frame of the display panel can be reduced.
On the basis of the above embodiment, referring to fig. 9, a corner of one side edge of the opening area 30 adjacent to the display area 10 adjacent to the second sub-binding area 221B is M, and a connection line direction between a binding pad in the second sub-binding area 221B nearest to the first sub-binding area 221A and the corner M is a third direction Z. The fourth portion 211D of the ith fanout line is parallel to the third direction Z. The fourth portion 211D of the ith fan-out line is arranged parallel to the third direction Z, so that the length of the first fan-out region in the first direction can be reduced to the greatest extent, and the lower frame of the display panel is reduced.
Optionally, the embodiment of the invention may be applied to the case of bending the fan-out area. Fig. 11 is a schematic structural diagram of another display panel according to an embodiment of the present invention. As shown in fig. 11, the fan-out area 21 of the display panel provided in the embodiment of the present invention may further include a bending area 214. The fanout line 211 further includes a fifth portion 211E, and the fifth portion 211E is parallel to the first direction X. The fifth portion 211E is located in the bending region 214, the first portion 211A and the second portion 211B are located in the fan-out region between the bending region 214 and the bonding region 22, and the bending axis P of the bending region 214 is perpendicular to the first direction X. Since the bending stress generated when the bending region 214 is bent easily causes the fan-out line to break, it is desirable to reduce the length of the fan-out line in the bending region 214 as much as possible. Therefore, in the embodiment of the present invention, each fan-out line located in the bending region 214 is arranged parallel to the first direction X, so that the fan-out line located in the bending region 214 is the shortest, and after the fan-out line extends out of the bending region, a part of the fan-out lines are arranged to be broken line segments including the first portion and the second portion, or arranged to be inclined pull lines having a certain included angle with the first direction.
Based on the above inventive concept, the embodiment of the invention also provides a display device. The display device includes the display panel according to any embodiment of the present invention, and therefore, the display device provided in the embodiment of the present invention has the corresponding beneficial effects of the display panel provided in the embodiment of the present invention, and details are not repeated herein. For example, the display device may be an electronic device such as a mobile phone, a computer, a smart wearable device (e.g., a smart watch), and an on-vehicle display device, which is not limited in this embodiment of the present invention.
Fig. 12 is a schematic structural diagram of a display device according to an embodiment of the present invention. As shown in fig. 12, the display device 100 includes the display panel 101 in the above-described embodiment.
It should be noted that the display device provided in the embodiment of the present invention may include at least one driving chip. If the display device comprises a plurality of driving chips, the plurality of driving chips are bound in the plurality of sub-binding regions in a one-to-one correspondence manner.
In other embodiments, the driving chip may further include a reference circuit setting region. The reference circuit setting area is generally used for setting important circuits such as a reference voltage source, a reference current source and the like. In order to prevent the difference of signals transmitted to the signal terminals of the driver chip from the reference voltage source, the reference current source, etc., the reference circuit setting area is generally disposed in the center area of the driver chip, the signal terminal setting areas are disposed on the left and right sides of the reference circuit setting area, and the signal terminals are disposed in the signal terminal setting areas. Therefore, the signal terminal setting area and the sub-binding area can be in one-to-one correspondence in the embodiment of the invention.
In addition, for a middle-sized or large-sized display panel, a plurality of driver chips are generally arranged, and the plurality of driver chips are bound to a plurality of sub-binding regions of the display panel in a one-to-one correspondence manner.
Fig. 13 is a schematic structural diagram of another display device according to an embodiment of the present invention. As shown in fig. 13, the exemplary setup display device includes 4 driving chips, respectively, a driving chip IC1, a driving chip IC2, a driving chip IC3, and a driving chip IC4.
Especially for those display devices that need to reserve a position for mechanism avoidance, the sub-binding region needs to be displaced. As shown in fig. 13, since the mechanism at the lower left side is retracted, the driver chip at the middle position of the non-display area originally below the display area needs to be moved to the position closer to the right side. As shown in fig. 14, for a middle-sized or large-sized display panel, a plurality of driver chips are generally arranged, and the plurality of driver chips are bound to a plurality of sub-binding regions of the display panel in a one-to-one correspondence manner. Because of avoiding the whole mechanism, two driving chips at the outermost side, namely the driving chip IC1 and the driving chip IC4, need to be displaced toward the driving chip inside. The driver chip IC1 is shifted toward the driver chip IC2, and moved from the position indicated by the broken line frame to the current position. The driver chip IC4 is shifted toward the driver chip IC3 from the position indicated by the broken line frame to the present position. Due to the avoidance of the mechanism, the resistance difference between the ith fan-out line and the jth fan-out line which are correspondingly connected with the adjacent driving chips is further increased, so that the problem of screen splitting of the display screen is caused. Therefore, the embodiment of the invention can obviously improve the problem of overlarge impedance difference of the fanout line caused by the mechanism avoiding moving the driving chip.
It is to be noted that the foregoing description is only exemplary of the invention and that the principles of the technology may be employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in some detail by the above embodiments, the invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the invention, and the scope of the invention is determined by the scope of the appended claims.
Claims (19)
1. A display panel comprises a display area and a non-display area, and is characterized in that the non-display area comprises a fan-out area and a binding area, and the display area, the fan-out area and the binding area are sequentially arranged along a first direction; the display area comprises a plurality of data lines arranged along a second direction; along the second direction, the binding region comprises at least two sub-binding regions, and gaps are formed between the adjacent sub-binding regions; the first direction intersects the second direction;
the fan-out area is provided with a plurality of fan-out lines; the binding area is provided with a plurality of binding pads; one ends of the fan-out lines are electrically connected with the binding pads in a one-to-one correspondence manner, and the other ends of the fan-out lines are electrically connected with the data lines in a one-to-one correspondence manner; the adjacent sub-binding regions are respectively a first sub-binding region and a second sub-binding region; in the fanout lines which are electrically connected with the binding pads of the first sub-binding region in a one-to-one correspondence manner along the direction departing from the second sub-binding region, at least continuous part of the fanout lines are broken line segments comprising a first part and a second part;
the fan-out line in the first sub-binding region, which is correspondingly and electrically connected with the binding pad nearest to the second sub-binding region, is an ith fan-out line; the fan-out line in the second sub-binding region, which is correspondingly and electrically connected with the binding pad nearest to the first sub-binding region, is a jth fan-out line;
the j-th fanout line comprises a j-th straight line segment; the ith fanout line comprises an ith broken line segment; an included angle between the first part of the ith broken line segment and the jth straight line segment is smaller than a first included angle threshold value, and the difference value between the included angle between the second part of the ith broken line segment and the second direction and the included angle between the jth straight line segment and the second direction is smaller than a second included angle threshold value; the length difference value of the jth straight-line segment and the ith broken-line segment is smaller than a preset length value;
along the direction deviating from the second sub-binding region, an included angle between the first part and the second part of each fan-out line comprising the first part and the second part is gradually increased, so that the resistance difference value of two adjacent fan-out lines is smaller than a preset resistance value;
along the first direction, from one end of the first portion close to the display area to an area of one end of the second portion far away from the display area, the jth fan-out routing is a straight line segment.
2. The display panel according to claim 1, wherein the first direction is perpendicular to the second direction.
3. The display panel according to claim 1, wherein the predetermined resistance value is 500 Ω.
4. A display panel as claimed in claim 1 characterized in that the first angle threshold is 3 °.
5. A display panel as claimed in claim 1 characterized in that the second angle threshold is 5 °.
6. The display panel of claim 1, wherein an angle between the first portion and the second portion of the same fanout line is greater than 90 °.
7. The display panel according to claim 1, wherein an angle between the first portion and the second portion of the same fanout line is less than or equal to 90 °;
the first portion and the second portion are connected by a third portion; the third part is a straight line segment; the included angle between the first portion and the third portion and the included angle between the second portion and the third portion are greater than 90 degrees.
8. The display panel according to claim 1, wherein an angle between the first portion and the second portion of the same fanout line is less than or equal to 90 °;
the first portion and the second portion are connected by a third portion; the third portion is an arc.
9. The display panel according to claim 8, wherein a tangent line at a junction of the first portion and the third portion is parallel to the first portion, and wherein a tangent line at a junction of the second portion and the third portion is parallel to the second portion.
10. The display panel according to claim 1, wherein the display panel comprises an opening area; the opening area is located between adjacent sub-bonding areas.
11. The display panel of claim 10, wherein the fan-out region comprises a first fan-out region and a second fan-out region; the first fan-out area is located between the display area and the opening area; the second fan-out region is located within the opening region, the sub-binding region, and the first fan-out region surrounding region; the first portion and the second portion are located in the first fan-out region;
the fan-out line further comprises a fourth portion, and the fourth portion is located in the second fan-out region; the extending direction of the fourth portion is parallel to the first direction.
12. The display panel of claim 10, wherein the fan-out region comprises a first fan-out region and a second fan-out region; the first fan-out area is located between the display area and the opening area; the second fan-out region is located within the opening region, the sub-binding region, and the first fan-out region surrounding region; the first portion and the second portion are located in the first fan-out region;
the fanout line further comprises a fourth portion, and the fourth portion is located in the second fanout region;
the included angle between the extending direction of the fourth part and the first direction is larger than 0 degree and smaller than 90 degrees;
an included angle between the fourth portion of the ith fanout line and the second direction is the same as an included angle between the fourth portion of the jth fanout line and the second direction.
13. The display panel according to claim 12, wherein a connection line between a bonding pad in the second sub-bonding region nearest to the first sub-bonding region and a corner of the opening region adjacent to one side edge of the display region and adjacent to the second sub-bonding region is a third direction; the fourth part of the ith fanout line is parallel to the third direction.
14. The display panel of claim 1, wherein the fan-out region comprises a bend region; the fanout line also comprises a fifth part; the fifth portion is parallel to the first direction;
the fifth part is positioned in the bending area; the first portion and the second portion are located in the fan-out region between the bending region and the binding region; the bending axis of the bending area is perpendicular to the first direction.
15. The display panel of claim 1, wherein the display area comprises a shaped border.
16. The display panel according to claim 1, wherein the non-display area comprises a shaped border.
17. A display device characterized by comprising the display panel according to any one of claims 1 to 16.
18. The display device according to claim 17, comprising a plurality of driver chips; and the plurality of driving chips are correspondingly bound in the plurality of sub-binding areas one by one.
19. The display device according to claim 17, comprising at least one of the driving chips;
the driving chip comprises a reference circuit setting area and signal terminal setting areas positioned on two sides of the reference circuit setting area; the signal terminal setting area corresponds to the sub-binding area one by one.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211458170.5A CN115799245A (en) | 2020-11-30 | 2020-11-30 | Display panel and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011384842.3A CN112349714B (en) | 2020-11-30 | 2020-11-30 | Display panel and display device |
| CN202211458170.5A CN115799245A (en) | 2020-11-30 | 2020-11-30 | Display panel and display device |
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| JP3667548B2 (en) * | 1998-03-27 | 2005-07-06 | シャープ株式会社 | Active matrix type liquid crystal display panel and inspection method thereof |
| KR100831235B1 (en) * | 2002-06-07 | 2008-05-22 | 삼성전자주식회사 | A thin film transistor array panel |
| US20060139551A1 (en) * | 2004-12-27 | 2006-06-29 | Yohei Kimura | Display device |
| CN104969283B (en) * | 2013-02-26 | 2017-06-16 | 夏普株式会社 | Display device |
| CN106169456A (en) * | 2016-08-22 | 2016-11-30 | 京东方科技集团股份有限公司 | Fanout line structure and the display device and the fan-out line wiring method that include it |
| CN206848661U (en) * | 2017-07-03 | 2018-01-05 | 京东方科技集团股份有限公司 | Array base palte and display device |
| CN107479275B (en) * | 2017-08-08 | 2021-04-02 | 惠科股份有限公司 | Display panel and display device |
| CN109345956B (en) * | 2018-11-26 | 2021-02-02 | 武汉天马微电子有限公司 | Display panel and display device |
| CN110412802A (en) * | 2019-06-27 | 2019-11-05 | 厦门天马微电子有限公司 | Display panel and display device |
| CN111708231B (en) * | 2020-06-30 | 2022-05-24 | 厦门天马微电子有限公司 | Display panel and display device |
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