Large light-emitting screen

Abstract

The invention discloses a large light-emitting screen which comprises at least two light-emitting screens arranged on the same side of a substrate in an array mode. Each light-emitting screen comprises a light-emitting area and a non-light-emitting area surrounding the light-emitting area, and the first electrode layer is arranged on the side, close to the substrate, of the light-emitting layer; the first electrode layer comprises a plurality of first electrodes which are sequentially arranged in the first direction, and the first electrodes extend in the second direction; the second electrode layer comprises a plurality of second electrodes which are sequentially arranged in the second direction, and the second electrodes extend in the first direction; the non-light-emitting area of each light-emitting screen is provided with a first test pin and a second test pin, the first test pin is electrically connected with the first electrode of the light-emitting screen adjacent to the light-emitting screen, and the second test pin is electrically connected with the second electrode of the light-emitting screen adjacent to the light-emitting screen; the substrate is also provided with a first power line and a second power line, the first power line is electrically connected with all the first test pins, and the second power line is electrically connected with all the second test pins. According to the invention, the production yield can be improved.

Description

Technical Field

[0001] The present invention relates to the field of organic light emitting technology, and in particular to a large light emitting screen. Background Art

[0002] Light-emitting screen, Passive matrix organic light-emitting diode (Passive matrix OLED, PMOLED) light-emitting screen is widely used due to its advantages such as simple structure, low manufacturing cost, fast response speed and energy saving.

[0003] During the manufacturing process of PMOLED light-emitting screen, because the light-emitting layer is made by evaporation process, some small defects will inevitably be introduced during the evaporation process, resulting in a low production yield of PMOLED light-emitting screen. Summary of the invention

[0004] The invention provides a large luminous screen to improve the production yield.

[0005] According to one aspect of the present invention, there is provided a large luminous screen, comprising:

[0006] A substrate and at least two array-arranged light-emitting screens disposed on the same side of the substrate; each light-emitting screen comprises a light-emitting area and a non-light-emitting area surrounding the light-emitting area, the light-emitting area comprises a first electrode layer, a light-emitting layer and a second electrode layer stacked in sequence, the first electrode layer is disposed on a side of the light-emitting layer adjacent to the substrate; the first electrode layer comprises a plurality of first electrodes arranged in sequence along a first direction, the first electrodes extending along a second direction; the second electrode layer comprises a plurality of second electrodes arranged in sequence along a second direction, the second electrodes extending along the first direction; wherein the first direction and the second direction intersect each other;

[0007] The non-luminous area of ​​each luminous screen is provided with a first test pin and a second test pin, the first test pin is electrically connected to the first electrode of the luminous screen adjacent to the luminous screen, and the second test pin is electrically connected to the second electrode of the luminous screen adjacent to the luminous screen.

[0008] Optionally, the non-luminous area includes a first non-luminous area and a second non-luminous area, the first non-luminous area and the second non-luminous area are located on both sides of the luminous area along the second direction; the second non-luminous area includes a bonding area;

[0009] The first test pin is located in the first non-luminous area and / or the second non-luminous area;

[0010] The second test pin is located in the first non-luminous area and / or the second non-luminous area.

[0011] Optionally, the first test pin is located in the second non-luminous area, and the second test pin is located in the first non-luminous area; or, the first test pin is located in the second non-luminous area, part of the second test pin is located in the first non-luminous area, and part of the second test pin is located in the second non-luminous area.

[0012] Optionally, the first non-luminous area of ​​the luminous screen includes a plurality of first test leads, one end of each first test lead is electrically connected to a first electrode, and each first test lead extends from the first non-luminous area to the second non-luminous area of ​​the adjacent luminous screen and is electrically connected to a first test pin located in the second non-luminous area of ​​the adjacent luminous screen;

[0013] The bonding area includes a plurality of second bonding pins, and the plurality of second electrodes are electrically connected to the second bonding pins in a one-to-one correspondence;

[0014] The second non-luminous area also includes a plurality of second test leads, one end of each of the second test leads is electrically connected to a second bonding pin, and each of the second test leads extends from the second non-luminous area to the first non-luminous area of ​​the adjacent luminous screen, and is electrically connected to a second test pin located in the first non-luminous area of ​​the adjacent luminous screen.

[0015] Optionally, when some of the second test pins are located in the first non-luminous area and some of the second test pins are located in the second non-luminous area:

[0016] The light-emitting screen further comprises a third non-luminous area and a fourth non-luminous area, wherein the third non-luminous area and the fourth non-luminous area are located at two sides of the light-emitting area along the first direction;

[0017] Along the second direction, the light-emitting area includes a first area and a second area, the second area is located on a side of the first area adjacent to the second non-light-emitting area; the second electrode in the first area is electrically connected to the second bonding pin through a second electrode lead arranged in the third non-light-emitting area, and the second electrode in the second area is electrically connected to the second bonding pin through a second electrode lead arranged in the fourth non-light-emitting area;

[0018] The fourth non-luminous area also includes a third test lead, the second electrode in the first area is electrically connected to the third test lead located in the fourth luminous area one by one, each third test lead extends from the fourth non-luminous area to the second non-luminous area of ​​the adjacent luminous screen, and is electrically connected to the second test pin located in the second non-luminous area of ​​the adjacent luminous screen.

[0019] Optionally, the line width of the first test lead is 0.5um-7.5um, and the spacing between adjacent first test leads is 0.5um-7.5um;

[0020] The line width of the second test lead is 0.5um-4.5um, and the spacing between adjacent first test leads is 0.5um-4.5um;

[0021] The line width of the third test lead is 0.5um-7.5um, and the interval between adjacent first test leads is 0.5um-7.5um.

[0022] Optionally, a plurality of the second test leads are distributed in at least two different film layers.

[0023] Optionally, the light emitting screen further comprises a first metal layer, wherein the first metal layer is arranged between the substrate and the first electrode layer, and the second electrode lead is arranged on the first metal layer;

[0024] The first test pin and the second test pin are arranged in the same layer as the first electrode layer and are made of the same material; or, the first test pin and the second test pin are arranged in the first metal layer, or, the first test pin and the second test pin each include two stacked sublayers, one sublayer is arranged in the first metal layer, and the other sublayer is arranged in the same layer as the first electrode layer and is made of the same material;

[0025] The first test lead, the second test lead and the third test lead are all arranged at the same layer as the first test pin and the second test pin, and are made of the same material.

[0026] Optionally, the light-emitting screen includes a first cutting edge, the first cutting edge is located between two adjacent light-emitting screens along the second direction, the distance between the first test pin and the first cutting edge is greater than 0 and less than or equal to 0.5 mm, and the distance between the second test pin and the first cutting edge is greater than 0 and less than or equal to 0.5 mm.

[0027] Optionally, a first power line and a second power line are further provided on the substrate, the first power line is electrically connected to all the first test pins, and the second power line is electrically connected to all the second test pins;

[0028] The first power line and the second power line extend along the second direction and are located between the light-emitting areas of two adjacent light-emitting screens along one direction;

[0029] The first power line, the second power line, the first test pin and the second test pin are arranged in the same layer and made of the same material.

[0030] In the luminous large screen of the embodiment of the present invention, the non-luminous area of ​​each luminous screen is provided with a first test pin and a second test pin, the first test pin is electrically connected to the first electrode of the luminous screen adjacent to the luminous screen, the second test pin is electrically connected to the second electrode of the luminous screen adjacent to the luminous screen, the first power line is electrically connected to all the first test pins, and the second power line is electrically connected to all the second test pins. The driving signal can be transmitted to the first electrode and the second electrode of each luminous screen through the first power line and the second power line, and all the luminous screens are subjected to lighting test or aging training, so as to screen out defective luminous screens and improve the production yield. In addition, by setting the first test pin to be electrically connected to the first electrode of the luminous screen adjacent to the luminous screen, and the second test pin to be electrically connected to the second electrode of the luminous screen adjacent to the luminous screen, the luminous large screen is cut, and after separating multiple luminous screens, the connection lines between the first test pin and the second test pin and the electrodes are cut and disconnected at the same time, so that the first electrode and the second electrode of each luminous screen after separation will not be short-circuited, and each luminous screen can work normally, without adding other processes to cut off the connection between the first electrode and the first test pin, and the connection between the second electrode and the second test pin, which can reduce the process cost.

[0031] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 It is a schematic diagram of a large luminous screen provided by an embodiment of the present invention.

[0034] Figure 2 yes Figure 1 Schematic diagram of the medium-light-emitting screen.

[0035] Figure 3 It is a schematic diagram of another light-emitting screen provided by an embodiment of the present invention.

[0036] Figure 4 yes Figure 3 Cross-sectional view of the light-emitting screen along section line AA. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0038] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0039] The embodiment of the present invention provides a large luminous screen. Figure 1 is a schematic diagram of a large luminous screen provided by an embodiment of the present invention, Figure 2 yes Figure 1 Schematic diagram of the medium-light-emitting screen, see Figure 1 and Figure 2 , the luminous large screen includes:

[0040] A substrate 10 and at least two array-arranged light-emitting screens 20 disposed on the same side of the substrate 10; each light-emitting screen 20 includes a light-emitting area 21 and a non-light-emitting area 22 surrounding the light-emitting area 21, the light-emitting area 21 includes a first electrode layer, a light-emitting layer, and a second electrode layer stacked in sequence, the first electrode layer is disposed on a side of the light-emitting layer adjacent to the substrate 10; the first electrode layer includes a plurality of first electrodes 11 sequentially arranged along a first direction X, the first electrodes 11 extending along a second direction Y; the second electrode layer includes a plurality of second electrodes 12 sequentially arranged along a second direction Y, the second electrodes 12 extending along the first direction X; wherein the first direction X and the second direction Y intersect each other;

[0041] The non-luminous area 22 of each luminous screen 20 is provided with a first test pin 31 and a second test pin 32. The first test pin 31 is electrically connected to the first electrode 11 of the luminous screen 20 adjacent to the luminous screen 20, and the second test pin 32 is electrically connected to the second electrode 12 of the luminous screen 20 adjacent to the luminous screen 20.

[0042] in, Figure 2The red dotted frame is a light-emitting screen 20, the red dotted frame is a cutting line 100 of the light-emitting screen 20, and the first test pin 31 and the second test pin 32 outside the red dotted frame are the first test pin 31 and the second test pin 32 in the adjacent light-emitting screen 20. The light-emitting screen 20 can be a PMOLED light-emitting screen, or it can be other light-emitting screens 20. The first electrode 11 is a cathode, and the second electrode 12 is an anode, or the first electrode 11 is an anode, and the second electrode 12 is a cathode. The light-emitting layer is an organic light-emitting layer. The area directly facing the first electrode 11 and the second electrode 12, and the light-emitting layer located between the areas directly facing the first electrode 11 and the second electrode 12 are a light-emitting unit. The first direction X and the second direction Y intersect with each other, and can be perpendicular to each other for example. The first electrode 11 and the second electrode 12 intersect with each other to form a plurality of light-emitting units arranged in an array. By sending driving signals to multiple first electrodes 11 and multiple second electrodes 12 in sequence, the light-emitting units in the array can be lit in a scanning manner. Each light-emitting unit works in a short pulse mode to achieve instantaneous high-brightness light emission. Each light-emitting unit enters a sleep state after instantaneous high-brightness light emission, so the overall energy consumption is low.

[0043] In the same light-emitting screen 20, the number of the first test pins 31 can be one, two or more, and the number of the second test pins 32 can be one, two or more. In the same light-emitting screen 20, all the first electrodes 11 are electrically connected to the first test pins 31, and all the second electrodes 12 are electrically connected to the second test pins 32. The light-emitting screen 20 in the light-emitting large screen can be lit by sending a drive signal to the first test pins 31 and the second test pins 32. Exemplarily, all the first test pins 31 in the light-emitting large screen can be set to be electrically connected to the first power line 41, and all the second test pins 32 can be electrically connected to the second power line 42. The drive signal can be sent to all the light-emitting screens at the same time through the first power line 41 and the second power line 42 to drive all the light-emitting screens 20 to emit light.

[0044] The first power signal can be transmitted to the first electrode 11 through the first test pin 31, and the second power signal can be transmitted to the second electrode 12 through the second test pin 32, so that the light-emitting units in all the light-emitting screens 20 in the light-emitting large screen are lit, so that the abnormal light-emitting screens 20 can be identified, and then the abnormal light-emitting screens 20 can be screened out and repaired, etc., to improve the production yield and screening efficiency. The first test pin 31 and the second test pin 32 can also be connected to the drive control board, and the drive control board outputs the positive and negative waveforms to the light-emitting screen 20 through the first test pin 31 and the second test pin 32 to achieve the purpose of aging training of the screen body.

[0045] The first test pin 31 in the light-emitting screen 20 is electrically connected to the first electrode 11 of the light-emitting screen 20 adjacent to the light-emitting screen 20, and the second test pin 32 is electrically connected to the second electrode 12 of the light-emitting screen 20 adjacent to the light-emitting screen 20, so that when the large light-emitting screen is cut, the connecting line between the first test pin 31 and the first electrode 11 is cut off, and the connecting line between the second test pin 32 and the second electrode 12 is cut off. After the multiple light-emitting screens 20 are separated, the first electrode 11 and the second electrode 12 of each light-emitting screen 20 will not be short-circuited, and each light-emitting screen 20 can work normally without adding other processes to cut off the connection between the first electrode 11 and the first test pin 31, and the connection between the second electrode 12 and the second test pin 32.

[0046] In the large luminous screen of the embodiment of the present invention, the non-luminous area 22 of each luminous screen 20 is provided with a first test pin 31 and a second test pin 32, the first test pin 31 is electrically connected to the first electrode 11 of the luminous screen 20 adjacent to the luminous screen 20, the second test pin 32 is electrically connected to the second electrode 12 of the luminous screen 20 adjacent to the luminous screen 20, the first power line 41 is electrically connected to all the first test pins 31, and the second power line 42 is electrically connected to all the second test pins 32. The driving signal can be transmitted to the first electrode 11 and the second electrode 12 of each luminous screen 20 through the first power line 41 and the second power line 42, and all the luminous screens 20 are subjected to lighting test or aging training, so as to screen out defective luminous screens 20 and improve the production yield. Furthermore, by setting the first test pin 31 to be electrically connected to the first electrode 11 of the light-emitting screen 20 adjacent to the light-emitting screen 20, and the second test pin 32 to be electrically connected to the second electrode 12 of the light-emitting screen 20 adjacent to the light-emitting screen 20, the large light-emitting screen can be cut and after a plurality of light-emitting screens 20 are separated, the connecting lines between the first test pin 31 and the second test pin 32 and the electrodes are cut and disconnected at the same time, so that the first electrode 11 and the second electrode 12 of each light-emitting screen 20 will not be short-circuited after separation, and each light-emitting screen 20 can work normally without adding other processes to cut off the connection between the first electrode 11 and the first test pin 31, and the connection between the second electrode 12 and the second test pin 32, thereby reducing the process cost.

[0047] In addition, reference Figure 1 and Figure 2 The first electrode 11 of the light-emitting screen 20 located at the edge of the light-emitting screen can be electrically connected to the first test pin 31 of the light-emitting screen frame, and the second electrode 12 of the light-emitting screen 20 located at the edge of the light-emitting screen can be electrically connected to the second test pin 32 of the light-emitting screen frame. When multiple light-emitting screens 20 are cut and separated, the frame of the light-emitting screen is cut off to disconnect the first test pin 31 of the frame from the first electrode 11 of the light-emitting screen 20, and disconnect the second test pin 32 of the frame from the second electrode 12 of the light-emitting screen 20.

[0048] Optionally, a first power line 41 and a second power line 42 are further provided on the substrate 10 , the first power line 41 is electrically connected to all the first test pins 31 , and the second power line 42 is electrically connected to all the second test pins 32 .

[0049] The first power line 41 and the second power line 42 can be connected to an external power source. The first power line 41 transmits a first power signal to the first test pin 31 and the first electrode 11, and the second power line 42 transmits a second power signal to the second test pin 32 and the second electrode 12, so that the light-emitting units in all the light-emitting screens 20 in the light-emitting large screen are lit, so that the abnormal light-emitting screens 20 can be identified, and then the abnormal light-emitting screens 20 can be screened out and repaired, etc., to improve the production yield and screening efficiency. The first power line 41 and the second power line 42 can also be connected to an external drive control board, and the drive control board outputs positive and negative waveforms to the light-emitting screen 20 through the first power line 41 and the second power line 42 to achieve the purpose of aging training of the screen body.

[0050] On the basis of the above embodiment, optionally, the non-luminous area 22 includes a first non-luminous area 221 and a second non-luminous area 222, and the first non-luminous area 221 and the second non-luminous area 222 are located on both sides of the luminous area 21 along the second direction Y; the second non-luminous area 222 includes a bonding area 60;

[0051] The first test pin 31 is located in the first non-luminous area 221 and / or the second non-luminous area 222;

[0052] The second test pin 32 is located in the first non-luminous area 221 and / or the second non-luminous area 222 .

[0053] Specifically, the bonding area 60 includes a plurality of bonding pins, for example, a first bonding pin 61 and a second bonding pin 62. The first bonding pin 61 is electrically connected to the first electrode 11 through the first electrode lead 111, and the second bonding pin 62 is electrically connected to the second bonding pin 62 through the second electrode lead 121. The bonding area 60 is used to bond the driver chip, and the pins on the driver chip are bonded together with the first bonding pin 61 and the second bonding pin 62, so that the driver chip can transmit a driving signal to the first electrode 11 and the second electrode 12.

[0054] The second non-luminous area 222 is a non-luminous area in which the bonding area 60 is provided. The first non-luminous area 221 is arranged opposite to the second non-luminous area 222. Since the second electrode lead 121 is usually routed in the non-luminous area 22 adjacent to the luminous area 21 along the first direction X, the space of the non-luminous area 22 adjacent to the luminous area 21 along the first direction X is small. The available wiring space in the first non-luminous area 221 and the second non-luminous area 222 is large. By arranging the first test pin 31 in the first non-luminous area 221 and / or the second non-luminous area 222, and the second test pin 32 in the first non-luminous area 221 and / or the second non-luminous area 222, the available space in the luminous screen 20 can be better utilized, and the arrangement of the first test pin 31 and the second test pin 32 is prevented from affecting the layout of other circuits in the non-luminous area 22.

[0055] Figure 3 is a schematic diagram of another luminous screen provided by an embodiment of the present invention. Based on the above embodiment, optionally, refer to Figure 2 and Figure 3 , the first test pin 31 is located in the second non-luminous area 222, and the second test pin 32 is located in the first non-luminous area 221 ( Figure 2 ), or, the first test pin 31 is located in the second non-luminous area 222, part of the second test pin 32 is located in the first non-luminous area 221, and part of the second test pin 32 is located in the second non-luminous area 222 ( Figure 3 ).

[0056] Specifically, refer to Figure 2 In the same light-emitting screen 20, all the first test pins 31 are located in the second non-luminous area 222, and all the second test pins 32 are located in the first non-luminous area 221. In this way, the connecting lines between the first electrode 11 and the first test pins 31 in the adjacent light-emitting screen 20 are all arranged in the first non-luminous area 221, and the connecting lines between the second electrode 12 and the second test pins 32 in the adjacent light-emitting screen 20 are all arranged in the second non-luminous area 222, which can reduce the wiring complexity.

[0057] refer to Figure 3 In the same light-emitting screen 20, part of the second test pins 32 are located in the first non-luminous area 221, and part of the second test pins 32 are located in the second non-luminous area 222. This arrangement makes it possible for the connecting line between the second electrode 12 and the second test pin 32 in the adjacent light-emitting screen 20 to be partially arranged in the second non-luminous area 222 and partially arranged in other non-luminous areas, so that the connecting line has a larger layout space to avoid short circuit caused by too small spacing between adjacent connecting lines.

[0058] In addition, adjacent first test pins 31 are electrically connected to each other through leads and then electrically connected to the first power line 41 through the first connection line 51, and adjacent second test pins 32 are electrically connected to each other through leads and then electrically connected to the second power line 42 through the second connection line 52. Figure 1 and Figure 2 The first non-luminous area 221 of the light-emitting screen 20 includes a plurality of first test leads 71, one end of each first test lead 71 is electrically connected to a first electrode 11, and each first test lead 71 extends from the first non-luminous area 221 to the second non-luminous area 222 of the adjacent light-emitting screen 20, and is electrically connected to the first test pin 31 located in the second non-luminous area 222 of the adjacent light-emitting screen 20;

[0059] The bonding area 60 includes a plurality of second bonding pins 62, and the plurality of second electrodes 12 are electrically connected to the second bonding pins 62 in a one-to-one correspondence;

[0060] The second non-luminous area 222 also includes multiple second test leads 72, one end of each second test lead 72 is electrically connected to a second bonding pin 62, and each second test lead 72 extends from the second non-luminous area 222 to the first non-luminous area 221 of the adjacent luminous screen 20, and is electrically connected to the second test pin 32 located in the first non-luminous area 221 of the adjacent luminous screen 20.

[0061] Specifically, each first electrode 11 is electrically connected to the first test pin 31 via a first test lead 71, and each second bonding pin 62 is electrically connected to the second test pin 32 via a second test lead 72. Figure 2 As shown, all first electrodes 11 are electrically connected to the same first test pin 31, and the number of first test pins 31 can also be set to two or more, and first electrodes 11 in different regions are electrically connected to different first test pins 31. Similarly, all second bonding pins 62 can be electrically connected to the same second test pin 32, and second bonding pins 62 in different regions can also be electrically connected to different second test pins 32.

[0062] refer to Figure 2The first test lead 71 extends from the first non-luminous area 221 of one luminous screen 20 along the second direction Y through the cutting line 100 between the two luminous screens 20 to the other luminous screen 20, so that after cutting along the cutting line 100, the first test lead 71 is disconnected, and the connection between the first electrode 11 and the first test pin 31 is disconnected, ensuring that the luminous screen 20 can work normally after separation. The second test lead 72 extends from the bonding area 60 of one luminous screen 20 along the second direction Y through the cutting line 100 between the two luminous screens 20 to the other luminous screen 20, so that after cutting along the cutting line 100, the second test lead 72 is disconnected, and the connection between the second electrode 12 and the second test pin 32 is disconnected, ensuring that the luminous screen 20 can work normally after separation.

[0063] Based on the above embodiment, optionally, refer to Figure 3 , when part of the second test pins 32 are located in the first non-luminous area 221 and part of the second test pins 32 are located in the second non-luminous area 222:

[0064] The light-emitting screen 20 further includes a third non-luminous area 223 and a fourth non-luminous area 224, and the third non-luminous area 223 and the fourth non-luminous area 224 are located on both sides of the light-emitting area 21 along the first direction X;

[0065] Along the second direction Y, the light-emitting area 21 includes a first area 211 and a second area 212, and the second area 212 is located on a side of the first area 211 adjacent to the second non-light-emitting area 222; the second electrode 12 in the first area 211 is electrically connected to the second bonding pin 62 via a second electrode lead 121 disposed in the third non-light-emitting area 223, and the second electrode 12 in the second area 212 is electrically connected to the second bonding pin 62 via a second electrode lead 121 disposed in the fourth non-light-emitting area 224;

[0066] The fourth non-luminous area 224 also includes a third test lead 73. The second electrode 12 in the first area 211 is electrically connected to the third test lead 73 located in the fourth luminous area 224 in a one-to-one manner. Each third test lead 73 extends from the fourth non-luminous area 224 to the second non-luminous area 222 of the adjacent luminous screen 20, and is electrically connected to the second test pin 32 located in the second non-luminous area 222 of the adjacent luminous screen 20.

[0067] Specifically, due to the limited space in the second non-luminous area 222, if the leads connecting the second electrode 12 and the second test pin 32 are all arranged in the second non-luminous area 222, the distance between the leads may be too small, which may easily cause a short circuit. The second electrode 12 in the first area 211 is electrically connected to the second bonding pin 62 through the second electrode lead 121 arranged in the third non-luminous area 223, so that there is no second electrode lead 121 in the fourth non-luminous area 224 adjacent to the first area 211, and the third test lead 73 can be arranged in the fourth non-luminous area 224. Part of the second test pin 32 is arranged in the second non-luminous area 222 of the adjacent light-emitting screen 20, and the second electrode 12 in the first area 211 is connected to the second test pin 32 through the third test lead 73 located in the fourth non-luminous area 224, so that the number of the second test leads 72 in the second test pin 32 of the second non-luminous area 222 is small, and the lead spacing can be set larger to avoid causing a short circuit.

[0068] refer to Figure 3 The third test lead 73 extends from the fourth non-luminous area 224 through the cutting line 100 to the second non-luminous area 222 of the adjacent luminous screen 20, so that after cutting along the cutting line 100, the third test lead 73 is disconnected, and the connection between the second electrode 12 and the second test pin 32 is disconnected, ensuring that the luminous screen 20 can work normally after being separated.

[0069] On the basis of the above embodiment, optionally, the line width of the first test lead 71 is 0.5um-7.5um, and the interval between adjacent first test leads 71 ​​is 0.5um-7.5um;

[0070] The line width of the second test lead 72 is 0.5um-4.5um, and the spacing between adjacent second test leads is 0.5um-4.5um;

[0071] The line width of the third test lead 73 is 0.5um-7.5um, and the interval between adjacent third test leads is 0.5um-7.5um.

[0072] By setting the line width of the first test lead 71 to 0.5um-7.5um and the spacing between adjacent first test leads 71 ​​to 0.5um-7.5um, the difficulty of manufacturing the first test lead 71 can be reduced while ensuring that the first test lead 71 meets the required resistance value, and short circuits between the first test leads 71 ​​can be avoided. Exemplarily, the line width of the first test lead 71 can be 1um, 2um, 3um, 4um, 5um, 6um or 7um, etc.

[0073] Since the wiring space in the second non-luminous area 222 is limited, by setting the line width of the second test lead 72 to 0.5um-4.5um and the spacing between adjacent second test leads to 0.5um-4.5um, while ensuring that the first test lead 71 meets the required resistance value, the difficulty of the manufacturing process of the second test lead 72 can be reduced, and short circuits between the second test leads 72 can be avoided. Exemplarily, the line width of the second test lead 72 can be 1um, 2um, 2.5um, 3um 3.5um or 4um, etc.

[0074] By setting the line width of the third test lead 73 to 0.5um-7.5um and the spacing between adjacent third test leads 73 to 2.5um-7.5um, the difficulty of manufacturing the third test lead 73 can be reduced while ensuring that the first test lead 71 meets the required resistance value, and short circuits between the third test leads 73 can be avoided. Exemplarily, the line width of the third test lead 73 can be 1um, 2um, 3um, 4um, 5um, 6um or 7um, etc.

[0075] Based on the above embodiment, optionally, a plurality of second test leads 72 are distributed in at least two different film layers.

[0076] Specifically, since the wiring space near the second bonding pin 62 in the second non-luminous area 222 is limited, by distributing multiple second test leads 72 in at least two different film layers, the spacing between the second test leads 72 on the same layer can be increased to avoid short circuits.

[0077] Figure 4 yes Figure 3 The cross-section of the middle luminous screen along the section line AA, refer to Figure 3 and Figure 4 The light-emitting screen generally includes a first metal layer 140, a first electrode layer 110, a first insulating layer 150, an isolation column 13, a light-emitting layer 130, and a second electrode layer 120 which are sequentially stacked on the substrate 10. The first electrode lead 111, the second electrode lead 121, the first bonding pin 61, and the second bonding pin 62 are all located in the first metal layer 140. Part of the second test lead 72 can be located in the first metal layer 140. A second metal layer and a second insulating layer are added to the first metal layer 140 and the substrate 10, the second insulating layer is arranged between the second metal layer and the first metal layer 140, and part of the second test lead 72 is arranged in the second metal layer. A second metal layer can also be added on the side of the first metal layer 140 away from the substrate 10. For example, a second metal layer can be added between the first insulating layer 150 and the film layer where the isolation column 13 is located, and part of the second test lead 72 is arranged in the second metal layer.

[0078] On the basis of the above embodiment, optionally, the light emitting screen further includes a first metal layer 140, the first metal layer 140 is arranged between the substrate 10 and the first electrode layer 110, and the second electrode lead 121 is arranged on the first metal layer;

[0079] The first test pin 31 and the second test pin 32 are arranged in the same layer as the first electrode layer 110 and are made of the same material; or, the first test pin 31 and the second test pin 32 are arranged in the first metal layer 140, or, the first test pin 31 and the second test pin 31 both include two stacked sub-layers, one sub-layer is arranged in the first metal layer 140, and the other sub-layer is arranged in the same layer as the first electrode layer 110 and is made of the same material;

[0080] The first power line 41 , the first power line 42 , the first test lead 71 , the second test lead 72 and the third test lead 73 are all arranged at the same layer as the first test pin 31 and the second test pin 32 and are made of the same material.

[0081] The material used for the first metal layer 140 may be AlMo or MoAlMo, and the material used for the first electrode layer 110 may be a light-transmitting metal oxide such as ITO.

[0082] The first test pin 31 and the second test pin 32 are arranged in the same layer as the first electrode layer 110 and are made of the same material. The first test pin 31 and the second test pin 32 can be prepared in the same process as the first electrode layer 110, thereby reducing the process cost. When the first test pin 31 and the second test pin 32 are made of the same material as the first electrode layer 110, the first test pin 31 and the second test pin 32 are light-transmissive and will not affect the appearance of the light-emitting screen.

[0083] The first test pin 31 and the second test pin 32 are disposed on the first metal layer 140 . The first test pin 31 and the second test pin 32 can be manufactured in the same process as the first metal layer 140 , thereby reducing the process cost.

[0084] When both the first test pin 31 and the second test pin 31 include two stacked sub-layers, the resistance of the first test pin 31 and the second test pin 31 can be reduced, and the signal loss can be reduced. The two sub-layers can be stacked in contact.

[0085] The first power line 41, the first power line 42, the first test lead 71, the second test lead 72 and the third test lead 73 are all arranged on the same layer as the first test pin 31 and the second test pin 32, and use the same material, so that the first power line 41, the first power line 42, the first test lead 71, the second test lead 72 and the third test lead 73 are all prepared in the same process as the first test pin 31 and the second test pin 32, thereby reducing the process cost.

[0086] On the basis of the above embodiment, optionally, the light-emitting screen 20 includes a first cutting edge 101, the first cutting edge 101 is located between two adjacent light-emitting screens 20 along the second direction Y, the distance between the first test pin 31 and the first cutting edge 101 is greater than 0 and less than or equal to 0.5 mm, and the distance between the second test pin 32 and the first cutting edge 101 is greater than 0 and less than or equal to 0.5 mm.

[0087] Specifically, a plurality of light-emitting screens 20 in the light-emitting large screen are arranged adjacent to each other, and the edge shared by two adjacent light-emitting screens 20 is a cutting line 100 of the two light-emitting screens 20. The plurality of light-emitting screens 20 can be separated by cutting the light-emitting large screen along the cutting line 100. The first cutting edge 101 is an edge of the light-emitting screen 20, which is a part of the cutting line 100. Two light-emitting screens 20 adjacent to each other along the second direction Y share one first cutting edge 101. By cutting the first cutting edge 101, two light-emitting screens 20 adjacent to each other along the second direction Y can be separated.

[0088] By setting the distance between the first test pin 31 and the first cutting edge 101 to be greater than 0 and less than or equal to 0.5 mm, and the distance between the second test pin 32 and the first cutting edge 101 to be greater than 0 and less than or equal to 0.5 mm, the distance between the first test pin 31 and the second test pin 32 and the first cutting edge 101 can be made smaller, so that the size of the first non-luminous area 221 and the second non-luminous area 222 of the light-emitting screen along the second direction Y after cutting is smaller, ensuring that the area of ​​the non-luminous area 22 of the light-emitting screen is smaller, and improving the aperture ratio of the light-emitting screen. Exemplarily, the distance between the first test pin 31 and the first cutting edge 101 is greater than 0 and less than or equal to 0.2 mm, and the distance between the second test pin 32 and the first cutting edge 101 is greater than 0 and less than or equal to 0.2 mm.

[0089] Based on the above embodiments, Figure 1 Optionally, the first power line 41 and the second power line 42 extend along the second direction Y, and are located between the light-emitting areas 21 of two adjacent light-emitting screens 20 along a direction X.

[0090] Specifically, a first power line 41 and a second power line 42 may be provided between two adjacent light-emitting screens 20 , and the first power line 41 and the second power line 42 are respectively located on both sides of the cutting line 100 between the two light-emitting screens 20 .

[0091] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0092] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A large luminous screen, characterized in that: include: A substrate and at least two array-arranged light-emitting screens disposed on the same side of the substrate; Each light-emitting screen comprises a light-emitting area and a non-light-emitting area surrounding the light-emitting area, the light-emitting area comprises a first electrode layer, a light-emitting layer, and a second electrode layer which are sequentially stacked, the first electrode layer being arranged on a side of the light-emitting layer adjacent to the substrate; the first electrode layer comprises a plurality of first electrodes sequentially arranged along a first direction, and the first electrodes extend along a second direction; the second electrode layer comprises a plurality of second electrodes sequentially arranged along a second direction, and the second electrodes extend along the first direction; wherein the first direction and the second direction intersect each other; The non-luminous area of ​​each luminous screen is provided with a first test pin and a second test pin, the first test pin is electrically connected to the first electrode of the luminous screen adjacent to the luminous screen, and the second test pin is electrically connected to the second electrode of the luminous screen adjacent to the luminous screen.

2. The luminous large screen according to claim 1, characterized in that: The non-luminous area includes a first non-luminous area and a second non-luminous area, wherein the first non-luminous area and the second non-luminous area are located at two sides of the luminous area along the second direction; the second non-luminous area includes a bonding area; The first test pin is located in the first non-luminous area and / or the second non-luminous area; The second test pin is located in the first non-luminous area and / or the second non-luminous area.

3. The luminous large screen according to claim 2, characterized in that: The first test pin is located in the second non-luminous area, the second test pin is located in the first non-luminous area, or the first test pin is located in the second non-luminous area, part of the second test pin is located in the first non-luminous area, and part of the second test pin is located in the second non-luminous area.

4. The luminous large screen according to claim 2, characterized in that: The first non-luminous area of ​​the luminous screen includes a plurality of first test leads, one end of each first test lead is electrically connected to a first electrode, each first test lead extends from the first non-luminous area to the second non-luminous area of ​​the adjacent luminous screen, and is electrically connected to a first test pin located in the second non-luminous area of ​​the adjacent luminous screen; The bonding area includes a plurality of second bonding pins, and the plurality of second electrodes are electrically connected to the second bonding pins in a one-to-one correspondence; The second non-luminous area also includes a plurality of second test leads, one end of each of the second test leads is electrically connected to a second bonding pin, and each of the second test leads extends from the second non-luminous area to the first non-luminous area of ​​the adjacent luminous screen, and is electrically connected to a second test pin located in the first non-luminous area of ​​the adjacent luminous screen.

5. The luminous large screen according to claim 4, characterized in that: When part of the second test pins are located in the first non-luminous area and part of the second test pins are located in the second non-luminous area: The light-emitting screen further comprises a third non-luminous area and a fourth non-luminous area, wherein the third non-luminous area and the fourth non-luminous area are located at two sides of the light-emitting area along the first direction; Along the second direction, the light-emitting area includes a first area and a second area, the second area is located on a side of the first area adjacent to the second non-light-emitting area; the second electrode in the first area is electrically connected to the second bonding pin through a second electrode lead arranged in the third non-light-emitting area, and the second electrode in the second area is electrically connected to the second bonding pin through a second electrode lead arranged in the fourth non-light-emitting area; The fourth non-luminous area also includes a third test lead, the second electrode in the first area is electrically connected to the third test lead located in the fourth luminous area one by one, each third test lead extends from the fourth non-luminous area to the second non-luminous area of ​​the adjacent luminous screen, and is electrically connected to the second test pin located in the second non-luminous area of ​​the adjacent luminous screen.

6. The large luminous screen according to claim 4 or 5, characterized in that: The line width of the first test lead is 0.5um-7.5um, and the spacing between adjacent first test leads is 0.5um-7.5um; The line width of the second test lead is 0.5um-4.5um, and the spacing between adjacent first test leads is 0.5um-4.5um; The line width of the third test lead is 0.5um-7.5um, and the interval between adjacent first test leads is 0.5um-7.5um.

7. The large luminous screen according to claim 4, characterized in that: A plurality of the second test leads are distributed in at least two different film layers.

8. The large luminous screen according to claim 5, characterized in that: The light emitting screen further comprises a first metal layer, wherein the first metal layer is arranged between the substrate and the first electrode layer, and the second electrode lead is arranged on the first metal layer; The first test pin and the second test pin are arranged in the same layer as the first electrode layer and are made of the same material; or, the first test pin and the second test pin are arranged in the first metal layer, or, the first test pin and the second test pin each include two stacked sublayers, one sublayer is arranged in the first metal layer, and the other sublayer is arranged in the same layer as the first electrode layer and is made of the same material; The first test lead, the second test lead and the third test lead are all arranged at the same layer as the first test pin and the second test pin, and are made of the same material.

9. The large luminous screen according to claim 1, characterized in that: The light-emitting screen includes a first cutting edge, which is located between two adjacent light-emitting screens along the second direction. The distance between the first test pin and the first cutting edge is greater than 0 and less than or equal to 0.5 mm. The distance between the second test pin and the first cutting edge is greater than 0 and less than or equal to 0.5 mm.

10. The large luminous screen according to claim 1, characterized in that: The substrate is also provided with a first power line and a second power line, the first power line is electrically connected to all the first test pins, and the second power line is electrically connected to all the second test pins; The first power line and the second power line extend along the second direction and are located between the light-emitting areas of two adjacent light-emitting screens along one direction; The first power line, the second power line, the first test pin and the second test pin are arranged in the same layer and made of the same material.

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