CN114495718A - Display panel - Google Patents

Abstract

The application provides a display panel, including display area and test area, be provided with many signal lines in the display area, be provided with a plurality of test terminals of mutual independence in the test area, many signal lines are connected with the test terminal that corresponds through the test line respectively, wherein, a plurality of test terminals form two at least test terminal rows of arranging along the first direction, every test terminal row includes at least one test terminal, there is at least one target test terminal in a plurality of test terminals, adjacent test terminal in target test terminal row and the adjacent test terminal row is along the first direction staggered arrangement. This application is through setting up two at least test terminal rows, for only setting up one, can alleviate the test terminal and place the technical problem that the space is not enough, in addition, through setting up the test terminal of crisscross arranging, can avoid the test needle to prick the short circuit phenomenon that causes because of the not enough mistake of precision, prevent that the panel from burning out to display panel's stability has been improved.

Description

Display panel

Technical Field

The application relates to the technical field of display, in particular to a display panel.

Background

In the production and manufacturing process of the display panel, the Shorting Bar lighting mode is simple and reliable, can detect the display abnormality of most display panels and is commonly used for lighting inspection. In the test zone of current display panel, each test terminal is the equidistant setting of single row, contacts each test terminal on the display panel respectively with the test needle when Shorting Bar test of lighting a lamp and realizes switching on and test. However, with the development of display technology, products with 4K, 8K and even 10K resolutions are developed in succession, and the 8K product circuit is denser than the 4K product circuit, so that the space where the display panel can be used for designing test terminals is smaller and smaller, and a single row of test terminals is not placed in enough space, even if the single row of test terminals can be placed barely, the space between the test terminals is smaller, and when a test pin is used for testing, if the precision is not enough, the test pin is easy to be pricked onto other test terminals by mistake, which causes signal short circuit and burns out the display panel, so that the stability of the display panel is not high.

Therefore, the existing display panel has the technical problems that the placement space of the test terminals is not enough and the stability of the panel is not high, and needs to be improved.

Disclosure of Invention

The embodiment of the application provides a display panel for alleviate the technical problem that test terminal placement space is not enough and panel stability is not high among the current display panel.

The embodiment of the application provides a display panel, including display area and test area, be provided with many signal lines in the display area, be provided with a plurality of test terminals of mutual independence in the test area, many signal lines are connected with the test terminal that corresponds through the test line respectively, wherein, a plurality of test terminals form two at least test terminal rows of arranging along the first direction, and every test terminal row includes at least one test terminal, there is at least one target test terminal in a plurality of test terminals, adjacent test terminal edge in target test terminal and the adjacent test terminal row the first direction is crisscross to be arranged.

In one embodiment, the target test terminal has a first length along a second direction, two adjacent test terminals in adjacent test terminal rows staggered from the target test terminal have a first pitch along the second direction, the second direction is perpendicular to the first direction, and the first length is less than or equal to the first pitch.

In one embodiment, a second pitch of the target test terminal from the two adjacent test terminals in the first direction is greater than a threshold value.

In one embodiment, the first length is less than the first pitch, and the portion of the target test terminal is embedded between the two test terminals.

In one embodiment, the test terminals in each odd test terminal row are arranged in the same manner, the test terminals in each even test terminal row are arranged in the same manner, and each test terminal in the odd test terminal row and an adjacent test terminal in an adjacent even test terminal row are arranged in a staggered manner along the first direction.

In one embodiment, the display panel includes an array layer, a plurality of scanning signal lines and a plurality of data signal lines are disposed in the display panel, the test terminals include a plurality of first test terminals and a plurality of second test terminals, each scanning signal line is connected to each corresponding first test terminal through a first test line, each data signal line is connected to each corresponding second test terminal through a second test line, and the plurality of first test terminals and the plurality of second test terminals are respectively located in different test terminal rows.

In one embodiment, the number of test terminals in each test terminal row is equal.

In one embodiment, the number of test terminals in each test terminal row is inversely proportional to the distance between each test terminal row and the display area.

In one embodiment, the test terminals are identical in shape and size.

In one embodiment, the test terminal rows are equally spaced apart.

Has the advantages that: the application provides a display panel, including display area and test area, be provided with many signal lines in the display area, be provided with a plurality of test terminals of mutual independence in the test area, many signal lines pass through the test line and are connected with the test terminal that corresponds respectively, wherein, a plurality of test terminals form two at least test terminal rows of arranging along the first direction, and every test terminal row includes at least one test terminal, there is at least one target test terminal in a plurality of test terminals, adjacent test terminal edge in target test terminal and the adjacent test terminal row the first direction is crisscross to be arranged. This application is through setting up two at least test terminal rows, for only setting up one, can alleviate the test terminal and place the technical problem that the space is not enough, in addition, through setting up the test terminal of crisscross arranging, can avoid the test needle to prick the short circuit phenomenon that causes because of the not enough mistake of precision, prevent that the panel from burning out to display panel's stability has been improved.

Drawings

The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.

Fig. 1 is a schematic plan view of a display panel in the prior art.

Fig. 2 is a schematic plan view of a display panel according to an embodiment of the present disclosure.

Fig. 3 is a schematic view of a film structure of a display panel according to an embodiment of the present disclosure.

Fig. 4 is a schematic diagram of a first arrangement of test terminals in a display panel according to an embodiment of the present disclosure.

Fig. 5 is a schematic diagram of a second arrangement of test terminals in a display panel according to an embodiment of the present disclosure.

Fig. 6 is a schematic diagram illustrating a third arrangement of test terminals in the display panel according to the embodiment of the present application.

Fig. 7 is a schematic diagram of alignment arrangement of test terminals in a display panel according to an embodiment of the present application.

Fig. 8 is a schematic diagram of a testing process of the testing apparatus.

Fig. 9 is a schematic diagram illustrating connection between a test terminal and a signal line in a display panel according to an embodiment of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It should be apparent that the described embodiments are only a few embodiments of the present application, and not all embodiments. 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 application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. To simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

The embodiment of the application provides a display panel for alleviate the technical problem that test terminal placement space is not enough and panel stability is not high among the current display panel.

As shown in fig. 2, the display panel provided by the present application includes a display area 100 and a test area 200, wherein a plurality of signal lines (not shown) are disposed in the display area 100, a plurality of test terminals 10 that are independent of each other are disposed in the test area 200, and the plurality of signal lines are respectively connected to corresponding test terminals 10 through test lines (not shown), wherein the plurality of test terminals form at least two test terminal rows arranged along a first direction Y, each test terminal row includes at least one test terminal 10, at least one target test terminal exists in the plurality of test terminals, and the target test terminal and an adjacent test terminal in the adjacent test terminal row are arranged in a staggered manner along the first direction Y.

The display panel of the present application may be a liquid crystal display panel or an OLED display panel, and when the display panel is a liquid crystal display panel, as shown in fig. 3, the display panel includes an array layer 101, a color film layer 102 and a liquid crystal layer (not shown) therebetween, which are oppositely disposed. When the display panel is an OLED display panel, the display panel includes an array layer, a light emitting layer, and an encapsulation layer. Each test terminal row is disposed on the top surface of the array layer. For convenience of explanation, the following embodiments will be described taking a liquid crystal display panel as an example, but the same is also applicable to an OLED display panel.

The display panel includes a display area 100 and a test area 200, the display area 100 includes a plurality of sub-pixels and a plurality of signal lines connected to the sub-pixels, the signal lines may be scan signal lines and data signal lines, the test area 200 is usually located at least one side of the display area 100, a plurality of test terminals 10 are provided in the test area 200, each data signal line or each scan signal line is divided into several groups, and each group of signal lines is connected to the test area with the test lines, respectively, and is connected to each test terminal 10. When the display panel is prepared and is subjected to lighting test, the test device is connected with the test terminal, the test signal of the test device reaches each signal line through the test terminal and the test line and reaches the corresponding sub-pixel through each signal line, and then whether the display function of the display panel is abnormal or not is judged according to the light emitting condition of the sub-pixel connected with each test terminal. The lighting test in the present application is a short-circuiting test, and the test terminal 10 is generally called Shorting Bar, and after the short-circuiting test is completed, the connection between the test line and the signal line is cut off by laser, and the test terminal 10 is removed.

Each test terminal 10 in the test area 200 is independent of each other, and at least two test terminal rows arranged along the first direction Y are formed in the test area 200, each test terminal row includes at least one test terminal 10, and the number of the test terminals 10 included in each test terminal row may be equal or unequal. As shown in fig. 4 and 5, there may be two test terminal rows, which are respectively represented by row a and row B, as shown in fig. 6, there may be three test terminal rows, which are respectively represented by row a, row B, and row C, and so on, and the number of the test terminal rows may be set according to the test requirements of the display panel.

In fig. 2, taking the first direction Y as a longitudinal direction, two test terminal rows are formed, namely, a first test terminal row 11 and a second test terminal row 12, and each of the first test terminal row 11 and the second test terminal row 12 includes 6 test terminals 10. In the two test terminal rows, at least one target test terminal exists, and the target test terminal and an adjacent test terminal in an adjacent test terminal row are arranged in a staggered manner along the first direction Y. Taking the target test terminal as the first test terminal 10 from left to right in the first test terminal row 11 as an example, the test terminal row adjacent to the first test terminal row 11 is the second test terminal row 12, the adjacent test terminals in the second test terminal row 12 are the first and second test terminals 10 from left to right, and the staggered arrangement along the first direction Y means that the connecting lines of the target test terminal and each adjacent test terminal 10 are not parallel to the first direction Y.

In the display panel, only one of the test terminals 10 in a certain test terminal row may be set as a target test terminal, and the target test terminal and the adjacent test terminal in the adjacent test terminal row are arranged in a staggered manner along the first direction Y, or all the test terminals in a certain row of test terminal rows may be set as target test terminals, and each target test terminal and the adjacent test terminal in the adjacent test terminal row are arranged in a staggered manner along the first direction Y. When the test terminal row where the target test terminal is located is an edge row, only one test terminal row is an adjacent test terminal row, and when the test terminal row where the target test terminal row is located is a non-edge row, the test terminal rows on the left side and the right side are all adjacent test terminal rows.

In the current display panel, as shown in fig. 1, the test terminals 10 are all arranged in a single row, and the length of the test area can only be consistent with the length of the display panel, when the resolution of the display panel is higher, because the number of sub-pixels is greater, and the number of corresponding test terminals is also greater, the single row mode may cause the test terminals not to have enough space for placing, and the test requirements cannot be met. In the application, the test terminals are arranged in two or more rows, and the area where the test terminals are located can be cut off after the subsequent lighting test is finished, so that the width of the test area can be increased to accommodate the two or more rows of test terminals, the technical problem of insufficient placement space is solved, and the narrow frame design of the display panel can not be influenced.

Meanwhile, as shown in fig. 8, when the lighting test of the display panel is performed by using the test apparatus 30, the test apparatus 30 sequentially performs three steps a, b, and c, which are forward, prick, and backward, respectively. Specifically, the testing device 30 first moves forward along the first direction Y on one side of the testing area to approach the display panel, and when reaching the top of the testing area, the testing pin 31 is inserted downward, so that the testing pin 31 contacts with the testing terminal 10 below, and simultaneously, a testing signal is input for testing, and after the testing is completed, the testing device moves backward along the first direction Y to be away from the display panel.

Under this prerequisite, when arranging with the mode of single row in the current display panel, if test terminal is more in quantity, in order to place down all test terminals, the distance between each test terminal can be very little, if the not enough scheduling problem of counterpoint precision appears, probably causes should prick test needle 31 on certain test terminal prick to prick on the other test terminals of same row to cause the signal short circuit, burn out the panel. And in this application, owing to set up two rows or multirow test terminal, then can keep certain distance between each test terminal correspondingly, even the mistake that has appeared to the inaccurate position of counterpointing pricks, because the position of mistake prick does not set up test terminal, can not cause the short circuit yet, can effectively prevent to burn out the panel.

In addition, when two or more rows are used, if the alignment arrangement shown in fig. 7 is used, if the test pins 31 that should be inserted into row a are inserted into row B by mistake due to the problem of alignment accuracy, the test pins 31 will be connected to a certain test terminal of row B, which causes a signal short circuit and burns out the panel. When the staggered arrangement scheme in fig. 4, 5 or 6 is adopted, even if the test terminal is mistakenly pricked to the row B, the test terminal is not arranged at the corresponding position of the row B, so that short circuit is not caused, the panel can be effectively prevented from being burnt out, and the stability of the panel is improved.

In one embodiment, the target test terminal has a first length along the second direction, two adjacent test terminals in the adjacent test terminal rows, which are staggered with the target test terminal, have a first pitch along the second direction, the second direction is perpendicular to the first direction, and the first length is smaller than or equal to the first pitch. As shown in fig. 4 and 5, taking all the test terminals 10 in the row B as target test terminals as an example, the target test terminal in the row a has a first length S1 along the second direction X, two adjacent test terminals 10 in the row a have a first pitch S2 along the second direction X, and the first length S1 is less than or equal to the first pitch S2, such an arrangement enables only the test terminals in the row B and the test terminals in the row a to be present on the forward and backward paths during the forward movement, the pricking movement and the backward movement of the test pin along the first direction Y, thereby ensuring that the test pin cannot be pricked on the test terminals in the row a, avoiding signal short circuit, and effectively preventing the panel from being burned.

In one embodiment, a second pitch of the target test terminal from two adjacent test terminals in the first direction is greater than a threshold value. As shown in fig. 4, the target test terminal in the row B and two adjacent test terminals in the row a have a second spacing S3 along the first direction Y, and the second spacing S3 is greater than a threshold value, which is 0 or other positive number, and can be set according to the requirement. This kind of setting makes two adjacent rows of test terminals keep certain distance, prevents that the effect of short circuit from further promoting, and display panel's stability is better.

In one embodiment, the first length is less than the first pitch, and the portion of the target test terminal is embedded between the two test terminals. As shown in fig. 5, the first length S1 is smaller than the first pitch S2, a portion of the target test terminal may be embedded between two adjacent test terminals, and the first length S1 may be smaller than two-thirds of the first pitch S2 and be disposed centrally between the two adjacent test terminals. Two adjacent test terminals have a second length S4 along the first direction Y, and the depth of insertion of the target test terminal is still a certain distance from the row a needle insertion position, and if the needle insertion point is at the center of the row a target test terminal, the insertion depth may be less than one third of the second length S4. The arrangement enables a certain distance to be reserved between the test terminals in the same row, the test terminals in adjacent rows are staggered along the first direction Y, only parts of the test terminals are overlapped along the second direction X, and the overlapping is outside the range of the accuracy deviation of the pricking pin, so that no matter whether the wrong pricking is along the first direction Y or the second direction X, the wrong pricking cannot be carried out on other test terminals to cause short circuit. Meanwhile, the arrangement enables the width of the test area to be designed to be narrow, and the panel manufacturing materials are reduced and the cost is reduced while the effects of enough placing space and short circuit prevention are achieved.

In one embodiment, the test terminals in each odd test terminal row are arranged in the same manner, the test terminals in each even test terminal row are arranged in the same manner, and each test terminal in the odd test terminal row and an adjacent test terminal in an adjacent even test terminal row are arranged in a staggered manner along the first direction. As shown in fig. 6, the rows a and C are odd rows and are arranged in the same manner, that is, the positions of the test terminals and the pitches of the test terminals in the rows a and C are correspondingly equal, and the rows B are even rows, and when there are more rows such as the rows D (not shown), the rows B and D are arranged in the same manner. This kind of setting is comparatively simple, and it is all less with the required parameter of test procedure to set up the test terminal, and the effect of dislocation is better, and panel stability is higher.

In one embodiment, a plurality of scan signal lines and a plurality of data signal lines are disposed in the display panel, the test terminals include a plurality of first test terminals and a plurality of second test terminals, each scan signal line is connected to each corresponding first test terminal through the first test line, each data signal line is connected to each corresponding second test terminal through the second test line, and the plurality of first test terminals and the plurality of second test terminals are respectively located in different test terminal rows.

As shown in fig. 9, G1 to G12 are scanning signal lines, D1 to D12 are data signal lines, and the test terminals 10 form rows a and B, where the test terminals 10 in row a are all first test terminals, the test terminals 10 in row B are all second test terminals, the first test terminals are connected to the scanning signal lines through the first test lines 60, the second test terminals are connected to the data signal lines through the second test lines 70, and short-circuit points 80 between the test lines and the signal lines are indicated by dots in the figure. In the upper half display region, the scan signal lines are grouped in groups of three, and then the first scan signal lines such as G1 and G4 in each group are connected to the row a 1 st first test terminal through the first test line 60, the second scan signal lines such as G2 and G5 are connected to the row a 2 nd first test terminal through the second first test line 60, and the third scan signal lines such as G3 and G6 are connected to the row a 3 rd first test terminal through the third first test line 60. The connection is made in the same way for the lower half of the display area. For each data signal line, the principle of connection with the second test line 70 and the second test terminal is similar. Of course, fig. 9 is only one connection manner of the signal line and the test line, and a plurality of signal lines with the same test signal may be connected to the test terminal through the same test line in other manners, and those skilled in the art may set other connection manners of the signal line and the test line as needed.

Because each data signal line sets up in same layer, and each scanning signal line sets up in same layer, and the cross arrangement that can reduce each test wire as far as possible with the test terminal setting of layer in same row for it is simpler to walk the line, and more convenient test.

In one embodiment, the number of test terminals in each test terminal row is equal. As shown in fig. 2, the first test terminal row 11 and the second test terminal row 12 are both provided with 6 test terminals, and after two or more test terminals 10 in the first test terminal row 11 are pricked at the same time, the test of two or more test terminals 10 corresponding to the second test terminal row 12 can be continuously performed by directly moving forward and to both sides without changing the distance between the test pins, so that the test process is simpler.

In one embodiment, the number of test terminals in each test terminal row is inversely proportional to the distance between each test terminal row and the display area. As shown in fig. 2, if the distance between the second test terminal row 12 and the display area 100 is small and the distance between the first test terminal row 11 and the display area 100 is large, the number of the test terminals 10 in the first test terminal row 11 can be set to be large and the number of the test terminals 10 in the second test terminal row 12 can be set to be small. Because each test terminal 10 needs to be connected with the signal line of the display area 100 through a test line, and the test terminal 10 closer to the display area 100 has shorter length of the test line connected with it, the arrangement can lead to more test lines with shorter length, less test lines with longer length and smaller total length of the test line, thus saving the cost, reducing the loss in the transmission process of the test signal and improving the test accuracy.

In one embodiment, the test terminals are the same shape and size, which results in simpler fabrication and testing involving fewer fabrication and testing parameters.

In an embodiment, the test terminal rows are arranged at equal intervals, so that the distances of movement along the first direction Y are equal when a multi-row test is performed, and the test is simpler.

According to the above embodiments:

the application provides a display panel, including display area and test area, be provided with many signal lines in the display area, be provided with a plurality of test terminals of mutual independence in the test area, many signal lines pass through the test line and are connected with the test terminal that corresponds respectively, wherein, a plurality of test terminals form two at least test terminal rows of arranging along the first direction, every test terminal row includes at least one test terminal, there is at least one target test terminal in a plurality of test terminals, adjacent test terminal in target test terminal row and the adjacent test terminal row is along the first direction staggered arrangement. This application is through setting up two at least test terminal rows, for only setting up one, can alleviate the test terminal and place the technical problem that the space is not enough, in addition, through setting up the test terminal of crisscross arranging, can avoid the test needle to prick the short circuit phenomenon that causes because of the not enough mistake of precision, prevent that the panel from burning out to display panel's stability has been improved.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The display panel provided by the embodiment of the present application is described in detail above, and a specific example is applied to illustrate the principle and the implementation manner of the present application, and the description of the embodiment is only used to help understanding the technical solution and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.

Claims (10)

1. The display panel is characterized by comprising a display area and a test area, wherein a plurality of signal lines are arranged in the display area, a plurality of mutually independent test terminals are arranged in the test area, the signal lines are respectively connected with the corresponding test terminals through the test lines, the test terminals form at least two test terminal rows arranged along a first direction, each test terminal row comprises at least one test terminal, at least one target test terminal exists in the test terminals, and the target test terminals and adjacent test terminals in the adjacent test terminal rows are arranged along the first direction in a staggered mode.

2. The display panel of claim 1, wherein the target test terminal has a first length along a second direction, two adjacent test terminals in adjacent test terminal rows that are staggered from the target test terminal have a first pitch along the second direction, the second direction is perpendicular to the first direction, and the first length is less than or equal to the first pitch.

3. The display panel of claim 2, wherein a second pitch of the target test terminal and the two adjacent test terminals in the first direction is greater than a threshold.

4. The display panel of claim 2, wherein the first length is less than the first pitch, and a portion of the target test terminal is embedded between the two test terminals.

5. The display panel of claim 1, wherein the test terminals in each odd-numbered test terminal row are arranged in the same manner, the test terminals in each even-numbered test terminal row are arranged in the same manner, and each test terminal in an odd-numbered test terminal row and an adjacent test terminal in an adjacent even-numbered test terminal row are arranged in a staggered manner in the first direction.

6. The display panel according to claim 1, wherein a plurality of scanning signal lines and a plurality of data signal lines are provided in the display panel, the test terminals include a plurality of first test terminals and a plurality of second test terminals, each scanning signal line is connected to each corresponding first test terminal through a first test line, each data signal line is connected to each corresponding second test terminal through a second test line, and the plurality of first test terminals and the plurality of second test terminals are respectively located in different test terminal columns.

7. The display panel according to claim 1, wherein the number of test terminals in each test terminal row is equal.

8. The display panel of claim 1, wherein the number of test terminals in each test terminal row is inversely proportional to a distance between each test terminal row and the display area.

9. The display panel according to claim 1, wherein the test terminals are identical in shape and size.

10. The display panel of claim 1, wherein the test terminal rows are arranged at equal intervals.

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