CN110265468B - Organic light emitting display panel and display device - Google Patents
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- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
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Abstract
The embodiment of the invention provides an organic light-emitting display panel and a display device, and relates to the technical field of displayAnd the signal uniformity of each scanning driving circuit unit can be improved. The organic light emitting display panel includes: the first straight edge and the second straight edge are connected through an arc edge; the arc-shaped edge comprises a scanning circuit rotating edge; the connecting point of the first straight line edge and the arc edge is a point A, the connecting point of the second straight line edge and the arc edge is a point B, the arc length of the rotating edge of the scanning circuit is L, the size of each scanning driving circuit unit in the short axis direction of the scanning driving circuit unit is a, the size of the pixel driving circuit in the first direction is B, a is B, the number of the dummy circuit units is m, and m satisfies the following formula: the rounding-down operator.
Description
Technical Field
The invention relates to the technical field of display, in particular to an organic light-emitting display panel and a display device.
Background
With the development of Display technology, Organic Light Emitting Display (OLED) panels are increasingly widely used due to their excellent characteristics of self-luminescence, high brightness, wide viewing angle, fast response, etc. The organic light-emitting display panel comprises a display area and a frame area surrounding the display area, wherein a scanning driving circuit used for generating scanning signals is arranged in the frame area, the scanning driving circuit comprises a plurality of cascaded scanning driving circuit units, the display area comprises pixel driving circuits arranged in an array, and each scanning driving circuit unit is used for driving one row of pixel driving circuits so as to realize the line-by-line driving of the display driving circuits.
For the organic light emitting display panel with the arc-shaped edge, the scan driving circuit units are usually placed in a rotating manner along the arc-shaped edge, but the distance between the scan driving circuit units corresponding to the arc-shaped edge is larger, and the distance between the scan driving circuit units at the non-arc-shaped edge is smaller, so that the signal uniformity of the scan driving circuit units at the arc-shaped edge and the scan driving circuit units at the non-arc-shaped edge is poor.
Disclosure of Invention
Embodiments of the present invention provide an organic light emitting display panel and a display device, which can improve signal uniformity of each scan driving circuit unit.
In one aspect, an embodiment of the present invention provides an organic light emitting display panel, including:
the display device comprises a display area and a frame area surrounding the display area, wherein the display area comprises a first straight edge extending along a first direction and a second straight edge extending along a second direction, the first straight edge and the second straight edge are connected through an arc-shaped edge, and the first direction is perpendicular to the second direction;
the arc-shaped edge comprises a scanning circuit rotating edge;
a plurality of scanning driving circuit units arranged along the rotating edge of the scanning circuit are arranged in the frame area, each scanning driving circuit unit is provided with a long axis and a short axis which are perpendicular to each other, and the direction of the short axis of each scanning driving circuit unit is the same as the tangential direction of the rotating edge of the adjacent scanning circuit;
the connecting point of the first straight line edge and the arc-shaped edge is a point A, the connecting point of the second straight line edge and the arc-shaped edge is a point B, the vertical distance between the point A and the straight line where the second straight line edge is located is R, and the vertical distance between the point B and the straight line where the first straight line edge is located is R;
the scanning driving circuit units arranged along the scanning circuit rotating edge comprise an effective circuit unit and a dummy circuit unit, the arc length of the scanning circuit rotating edge is L, the size of each scanning driving circuit unit in the short axis direction is a, the size of the pixel driving circuit in the first direction is b, a is b, the number of the dummy circuit units is m, and m satisfies the following formula:
Optionally, there is a point O in the display area, a straight line AO passing through points a and O is perpendicular to the first straight line edge, and a straight line BO passing through points B and O is perpendicular to the second straight line edge;
taking an E point and an F point at any different positions on the rotating edge of the scanning circuit, wherein the included angle between a straight line EO passing through the E point and the O point and a straight line AO is alpha, the included angle between a straight line FO passing through the F point and the OA and the straight line EO is beta, alpha is more than 0 and less than 90 degrees, and alpha and beta are more than 0 and less than 90 degrees;
m satisfies the following formula:
Optionally, there is a point O in the display area, a straight line AO passing through points a and O is perpendicular to the first straight line edge, and a straight line BO passing through points B and O is perpendicular to the second straight line edge;
the arc-shaped edge is a quarter of a circle with the O point as the center and the R as the radius.
Optionally, there is a point C on the arc-shaped edge, and an AC portion in the arc-shaped edge is the scan circuit rotation edge;
wherein d is the included angle degree between the straight line AO and the straight line CO, and the straight line CO is a straight line passing through the point C and the point O.
Optionally, there is a point O in the display area, a straight line AO passing through points a and O is perpendicular to the first straight line edge, and a straight line BO passing through points B and O is perpendicular to the second straight line edge;
a point C exists on the arc-shaped edge, and an AC part in the arc-shaped edge is a rotating edge of the scanning circuit;
wherein d is the included angle degree between the straight line AO and the straight line CO, the straight line CO is a straight line passing through the point C and the point O, and L' is the length of the arc-shaped edge.
optionally, d satisfies the following formula:wherein cos is a cosine operator, and e takes a value of 2, 3 or 4.
Optionally, 70 ° < d <80 °.
Optionally, the scan circuit rotation edge is the arc edge.
On the other hand, an embodiment of the invention further provides a display device, which includes the organic light emitting display panel.
In the organic light emitting display panel and the display device according to the embodiments of the present invention, the plurality of scan driving circuit units arranged along the rotation edge of the scan circuit includes an effective circuit unit and a dummy circuit unit, an arc length of the rotation edge of the scan circuit is L, a size of each scan driving circuit unit in a short axis direction thereof is a, a size of the pixel driving circuit in the first direction is b, a is m, a number of the dummy circuit units is m, and m satisfies the following formula:therefore, the scanning driving circuit units arranged along the edge of the display area can be ensured to be arranged according to the consistent size and the arrangement mode so as to be matched with and drive the pixel driving circuit in the display area.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an organic light emitting display panel according to an embodiment of the present invention;
FIG. 2 is a partial enlarged view of the area W in FIG. 1;
FIG. 3 is an enlarged view of a portion of the area W in FIG. 1;
FIG. 4 is a schematic view of an auxiliary line corresponding to FIG. 2;
FIG. 5 is an enlarged view of a portion of the area W in FIG. 1;
fig. 6 is a schematic structural diagram of a display device according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
As shown in fig. 1, fig. 2 and fig. 3, fig. 1 is a schematic structural diagram of an organic light emitting display panel in an embodiment of the present invention, fig. 2 is a schematic partial enlarged structural diagram of a region W in fig. 1, and fig. 3 is a schematic partial enlarged structural diagram of another region W in fig. 1, where an embodiment of the present invention provides an organic light emitting display panel, including: a display area 1 and a bezel area 2 surrounding the display area 1, the display area 1 including a first straight edge Q1 extending in a first direction h1 and a second straight edge Q2 extending in a second direction h2, the first straight edge Q1 and the second straight edge Q2 being connected by an arc-shaped edge AB, the first direction h1 being perpendicular to the second direction h 2; the arc edge AB includes a scan circuit rotation edge AC; a plurality of scan driving circuit units 3 arranged along the scan circuit rotation edge AC are disposed in the frame region 2, each scan driving circuit unit 3 has a major axis S1 and a minor axis S2 perpendicular to each other, the minor axis S2 direction of each scan driving circuit unit 3 is the same as the tangential line S0 direction of the adjacent scan circuit rotation edge AC, the major axis direction of the scan driving circuit unit 3 is the length direction thereof, the minor axis direction is the width direction, and the rectangle in fig. 2 is used as the schematic shape of the scan driving circuit unit 3, in practice, the scan driving circuit unit 3 is specifically composed of devices such as thin film transistors, and a regular rectangle cannot be formed, but only shows that the space occupied by the circuit layout of one scan driving circuit unit 3 is a structure similar to a rectangle, the axis extending along the length direction is the major axis, and the axis extending along the width direction is the minor axis; the connecting point of the first straight line edge Q1 and the arc-shaped edge AB is a point A, the connecting point of the second straight line edge Q2 and the arc-shaped edge AB is a point B, the vertical distance between the point A and the straight line where the second straight line edge Q2 is located is R, and the vertical distance between the point B and the straight line where the first straight line edge is located is R; the plurality of scan driving circuit units 3 arranged along the scan circuit rotation edge AC include an effective circuit unit 31 and dummy circuit units 32, the arc length of the scan circuit rotation edge AC is L, the size of each scan driving circuit unit 3 in the direction of the minor axis S2 thereof is a, the size of a pixel driving circuit (not shown in the figure) in the first direction h1 is b, a is b, the number of dummy circuit units 32 is m, and m satisfies the following formula:
Specifically, the pixel driving circuits are arranged in an array in the display area 1, the first direction h1 is a column direction, the second direction h2 is a row direction, the pixel driving circuits are arranged in a plurality of rows along the first direction h1, each row of pixel driving circuits corresponds to one scanning driving circuit unit 3, each row of pixel driving circuits corresponds to one effective circuit unit 31 in an area corresponding to the arc-shaped edge AB, and the effective circuit units 31 and the dummy circuit units 32 have the same structure, except that the output end of the dummy circuit unit 32 is not connected with any pixel driving circuit. The scan circuit rotation edge AC may be set as needed, and in the example shown in fig. 2, the point C is located between the points a and B, that is, the scan driving circuit unit 3 is arranged from the point a to the point C, and the scan driving circuit unit 3 is not arranged to the uppermost end of the display region 1, and in the example shown in fig. 3, the point C and the point B coincide, that is, the entire arc-shaped edge AB is used as the scan circuit rotation edge, that is, the scan driving circuit unit 3 is arranged from the point a to the uppermost point B of the display region 1, and may be specifically set as needed, for example, determined according to the input connection position of the uppermost end of the pixel driving circuit. In the area corresponding to the first straight edge Q1, the size of the scan driving circuit unit 3 in the first direction h1 is the size a of the scan driving circuit unit 3 in the direction of the minor axis S2 thereof, the size of the pixel driving circuit in the first direction h1 is b, and a is b, that is, in the area corresponding to the first straight edge Q1, one scan driving circuit unit 3 corresponds to exactly one row of pixel driving circuits, and the heights of the two are the same, however, the structures and the sizes of the scan driving circuit unit 3 and the pixel driving circuits are not changed, the sizes and the arrangement modes of the pixel driving circuits are not changed, but the direction of the scan driving circuit unit 3 is changed and the scan driving circuit unit is rotationally arranged along an arc edge, obviously, the length of the straight edge corresponding to the same number of rows of pixel driving circuits is smaller than the length of the corresponding arc edge, therefore, in the embodiment of the present invention, the dummy circuit unit 32 is arranged at the position corresponding to the scan circuit rotation edge AC, and the size of the scanning drive circuit units 3 satisfies the above formula, where L/a represents the number of scanning drive circuit units 3 provided when the scanning drive circuit units 3 are provided in the same arrangement as along the first straight edge Q1, and R/B represents the number of rows of pixel drive circuits in the display area 1 corresponding to the arc edge AB, since the size a of the effective circuit unit 31 corresponding to the arc edge AB in the direction of the minor axis S2 thereof is equal to the size B of the pixel drive circuit in the first direction h1, and the effective circuit units 31 arranged along the arc edge AB need to correspond one-to-one to the rows of pixel drive circuits in the display area 1 corresponding to the arc edge AB, that is, between points a and B, the number of rows of pixel drive circuits is the same as the number of effective circuit units 31, therefore, L/a-R/b represents the number of dummy circuit cells 32, and since the result may not be an integer, the calculation result of L/a-R/b is rounded down as the number of dummy circuit cells 32.
In the organic light emitting display panel according to an embodiment of the present invention, the plurality of scan driving circuit units arranged along the rotation edge of the scan circuit include an effective circuit unit and a dummy circuit unit, an arc length of the rotation edge of the scan circuit is L, a size of each scan driving circuit unit in a short axis direction thereof is a, a size of the pixel driving circuit in the first direction is b, a is m, a number of the dummy circuit units is m, and m satisfies the following formula:thus, it is possible to ensure that the scan driving circuit units arranged along the edge of the display area are uniformly sized and arranged in a rowThe arrangement mode is set so as to be matched with the pixel driving circuit in the driving display area, and in the manufacturing process of the scanning driving circuit, due to the consistent size and arrangement mode, the consistency of the manufactured circuits in the process is improved, so that the signal uniformity of each scanning driving circuit unit is improved, and the picture display effect is improved.
Alternatively, as shown in fig. 4, fig. 4 is a schematic diagram of an auxiliary line corresponding to fig. 2, where a point O is present in the display area 1, a straight line AO passing through the points a and O is perpendicular to the first straight line edge Q1, and a straight line BO passing through the points B and O is perpendicular to the second straight line edge Q2; taking an E point and an F point at any different positions on a rotating edge AC of a scanning circuit, wherein an included angle between a straight line EO passing through the E point and the O point and a straight line AO is alpha, an included angle between a straight line FO passing through the F point and OA and the straight line EO is beta, alpha is more than 0 and less than 90 degrees, and alpha and beta are more than 0 and less than 90 degrees;
m satisfies the following formula:
Specifically, a straight line EE 'perpendicular to the straight line AO is drawn through a point E, the intersection point of the straight line EE' and the straight line AO is a point E ', a straight line FF' perpendicular to the straight line AO is drawn through a point F, the intersection point of the straight line FF 'and the straight line AO is a point F', a straight line EP perpendicular to the straight line FF 'is drawn through a point E, the intersection point of the straight line EP and the straight line FF' is a point P,the arc length corresponding to arc EF is shown,represents the number of scan driving circuit units corresponding to the arc EF; the length of the line segment FF 'is R multiplied by sin (alpha + beta), the length of the line segment EE' is R multiplied by sin alpha, the length of the line segment EE 'is equal to the length of the line segment PF', and the length of the line segment FP is R multiplied by sin alphaI.e. representing arc EF pairsThe number m of the dummy circuit cells 32 and the number of the effective circuit cells 31 satisfyThe arrangement rule of the dummy circuit units 32 in the scan circuit rotation edge AC is explained, the dummy circuit units 32 are arranged in the effective circuit units 31 in an interspersed manner, and the number of the dummy circuit units on the scan circuit rotation edge corresponding to the angle β can be calculated by the formula. Alternatively, as shown in fig. 2, there is a point O in the display area 1, a straight line AO passing through points a and O is perpendicular to the first straight edge Q1, and a straight line BO passing through points B and O is perpendicular to the second straight edge Q2; the arc-shaped edge AB is a quarter of a circle with the O point as the center and the R as the radius.
Therefore, when α is equal to 0 and β is equal to 90 °, m is ═ R/2a-R/b, and it is explained that the scan circuit cells composed of the effective circuit cells and the dummy circuit cells are all arranged in the length on the circular arc 1/4, as shown in fig. 3, the number of dummy circuit cells m can be easily calculated from the process parameters (R, a, b) defined in the display panel. Of course, in general, the length of the 1/4 arc will not be all the scan circuit units, that is, there is a segment of the arc without any scan driving units, as shown in fig. 5, the CB arc segment may not have any scan driving units, and the corresponding angle d of the scan circuit rotation edge AC is less than 90 °.
In addition, according to the formula, when β is constant and α is larger, the arc length of the arc EF is constant, but the number of the dummy circuit units 32 corresponding to the arc EF is smaller, that is, the distribution rule of the dummy circuit units 32 in the whole scanning circuit rotation edge AC is shown, that is, the closer to the point C along the scanning circuit rotation edge AC, the greater the distribution density of the dummy circuit units 32 is, and it is also shown that the closer to the point C, the smaller the distribution density of the effective circuit units 31 is.
The distribution rule can further improve the consistency of circuit routing at different positions in the rotating edge AC of the scanning circuit.
And set up the range to effective circuit unit and dummy circuit unit interlude each other, can't be according to conventional mode, directly acquire all effective circuit unit and arrange the total angle that corresponds at the rotation edge, this application has utilized under the prerequisite that a scanning drive unit corresponds a line pixel, with the number of rows of pixel row equal scanning drive circuit's quantity in R angle department, therefore obtain the quantity of dummy circuit unit, and different according to the setting of actual effective circuit unit, reasonable arrangement dummy circuit unit, make full use of the space in R angle, improve display panel's screen and account for the ratio.
Alternatively, as shown in fig. 2, a point C exists on the arc-shaped edge AB, and the AC portion in the arc-shaped edge AB is the scan circuit rotation edge;wherein d is the included angle degree between the straight line AO and the straight line CO, and the straight line CO is a straight line passing through the point C and the point O. When the arc edge AB is a portion of the circumference, the arc length L of the rotating edge AC of the scanning circuit can be determined according to the degree of the angle between the straight line AO and the straight line CO.
Alternatively, as shown in fig. 2 and 5, fig. 5 is another partial enlarged schematic view of the area W in fig. 1, and shows that there is a point O in the area, a straight line AO passing through points a and O is perpendicular to the first straight line edge Q1, and a straight line BO passing through points B and O is perpendicular to the second straight line edge Q2; a point C exists on the arc-shaped edge AB, and the AC part in the arc-shaped edge AB is a rotating edge of the scanning circuit;wherein d is the included angle degree between the straight line AO and the straight line CO, the straight line CO is the straight line passing through the point C and the point O, and L' is the length of the arc-shaped edge AB. The arc length L of the scanning circuit rotating edge AC can be determined by the length L' of the arc edge AB and the degree of the angle between the straight line AO and the straight line CO.
Alternatively, as shown in FIG. 5,when the arc-shaped edge AB is not a part of the circumference, its arc length is necessarily less than a quarter of the arc length.
Alternatively, as shown in FIG. 5, is the linear distance between point a and point B, and when the arc edge AB is not part of the circumference, its arc length must be greater than this value to ensure that the edge between point a and point B forms an arc.
Alternatively, as shown in fig. 2 and 5, d satisfies the following formula:wherein cos is a cosine operator, and e takes a value of 2, 3 or 4.
Specifically, a straight line CG perpendicular to the straight line BO is drawn through a point C, the intersection point of the straight line CG and the straight line BO is a point G, the length of a line segment GO is R multiplied by cos (90-d), the length of a line segment BG is R-R multiplied by cos (90-d), namely the position of the point C is the position of a pixel driving circuit which is away from a point B by e, e represents the number of lines of the pixel driving circuit reserved between the point C and the point B, the value d can be determined more conveniently and accurately according to the number of lines of the pixel driving circuit between the point C and the point B, and the application of the formula is easier to implement for actual production requirements by replacing the angle d corresponding to the set rotating edge AC of the scanning circuit with a parameter which is easier to obtain.
Alternatively, as shown in fig. 2 and 5, 70 ° < d <80 °, it can be derived from the above formula according to the parameters of the display panel that the arc angle range corresponding to the rotation edge of the scan circuit formed by the effective circuit unit and the dummy circuit unit is between 70 ° and 80 °, and the number of design requirements of the effective circuit unit and the dummy circuit unit is satisfied to the maximum extent.
Alternatively, as shown in fig. 3, the scan circuit rotation edge AC is an arc edge AB. The points C and B coincide, that is, the entire arc-shaped edge AB serves as the scanning circuit rotation edge, i.e., the scanning driving circuit unit 3 is arranged from the point a to the uppermost point B of the display region 1,
as shown in fig. 6, fig. 6 is a schematic structural diagram of a display device according to an embodiment of the present invention, and the embodiment of the present invention further provides a display device including the organic light emitting display panel 100.
The specific structure and principle of the organic light emitting display panel 100 are the same as those of the above embodiments, and are not described herein again. The display device in the embodiment of the present invention may be any electronic device with a display function, such as a touch display screen, a mobile phone, a tablet computer, a notebook computer, an electronic book, or a television.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (11)
1. An organic light emitting display panel, comprising:
the display device comprises a display area and a frame area surrounding the display area, wherein the display area comprises a first straight edge extending along a first direction and a second straight edge extending along a second direction, the first straight edge and the second straight edge are connected through an arc-shaped edge, and the first direction is perpendicular to the second direction; the display area includes a plurality of pixel driving circuits;
the arc-shaped edge comprises a scanning circuit rotating edge;
a plurality of scanning driving circuit units arranged along the rotating edge of the scanning circuit are arranged in the frame area, each scanning driving circuit unit is provided with a long axis and a short axis which are perpendicular to each other, and the direction of the short axis of each scanning driving circuit unit is the same as the tangential direction of the rotating edge of the adjacent scanning circuit;
the connecting point of the first straight line edge and the arc-shaped edge is a point A, the connecting point of the second straight line edge and the arc-shaped edge is a point B, the vertical distance between the point A and the straight line where the second straight line edge is located is R, and the vertical distance between the point B and the straight line where the first straight line edge is located is R;
the scanning driving circuit units arranged along the scanning circuit rotating edge comprise an effective circuit unit and a dummy circuit unit, the arc length of the scanning circuit rotating edge is L, the size of each scanning driving circuit unit in the short axis direction is a, the size of the pixel driving circuit in the first direction is b, a is b, the number of the dummy circuit units is m, and m satisfies the following formula:
2. The organic light-emitting display panel according to claim 1,
a point O exists in the display area, a straight line AO passing through the point A and the point O is perpendicular to the first straight line edge, and a straight line BO passing through the point B and the point O is perpendicular to the second straight line edge;
taking an E point and an F point at any different positions on the rotating edge of the scanning circuit, wherein the included angle between a straight line EO passing through the E point and the O point and a straight line AO is alpha, the included angle between a straight line FO passing through the F point and the OA and the straight line EO is beta, alpha is more than 0 and less than 90 degrees, and alpha and beta are more than 0 and less than 90 degrees;
m satisfies the following formula:
3. The organic light-emitting display panel according to claim 1,
a point O exists in the display area, a straight line AO passing through the point A and the point O is perpendicular to the first straight line edge, and a straight line BO passing through the point B and the point O is perpendicular to the second straight line edge;
the arc-shaped edge is a quarter of a circle with the O point as the center and the R as the radius.
4. The organic light-emitting display panel according to claim 3,
a point C exists on the arc-shaped edge, and an AC part in the arc-shaped edge is a rotating edge of the scanning circuit;
5. The organic light-emitting display panel according to claim 1,
a point O exists in the display area, a straight line AO passing through the point A and the point O is perpendicular to the first straight line edge, and a straight line BO passing through the point B and the point O is perpendicular to the second straight line edge;
a point C exists on the arc-shaped edge, and an AC part in the arc-shaped edge is a rotating edge of the scanning circuit;
9. The organic light-emitting display panel according to claim 4 or 5,
70°<d<80°。
10. the organic light-emitting display panel according to claim 1,
the rotation edge of the scanning circuit is the arc edge.
11. A display device characterized by comprising the organic light-emitting display panel according to any one of claims 1 to 10.
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