Display screen and electronic equipment

Abstract

The invention provides a display screen and electronic equipment. The display screen comprises a display backboard and a light-emitting layer. A plurality of concave parts are concavely arranged on the surface of the display back plate, and a supporting part is arranged between any two adjacent concave parts; supporting bulges are convexly arranged on the surfaces of part of the supporting parts; the light-emitting layer comprises a common layer and a plurality of sub-pixels; the plurality of sub-pixels are respectively arranged in the plurality of concave parts; the common layer comprises a first common part and a second common part; the first common part is stacked on the surface of the supporting part; the second common part is stacked on the plurality of sub-pixels; the periphery of each sub-pixel in at least part of the sub-pixels is provided with a separator; the isolation piece is arranged on the supporting part and penetrates through the first common part, and the surface, away from the supporting part, of the isolation piece is lower than the surface, away from the supporting part, of the supporting protrusion. According to the display screen, the isolation pieces are arranged, the isolation pieces prevent current from being transmitted to the adjacent sub-pixels which do not need to emit light, the risk of the light crosstalk problem is reduced, and the definition of a picture displayed by the display screen is improved.

Description

Technical Field

[0001] This application relates to the field of display technologies, and in particular, to a display screen and an electronic device. Background Art

[0002] Organic light-emitting diode (OLED) displays have excellent color saturation, contrast, and response speed, and thus are widely used in various industries. In particular, a wide variety of electronic devices including mobile phones, and a large part of these electronic devices use OLED displays as display screens.

[0003] However, in current OLED displays, the problem of light crosstalk is likely to occur. Summary of the Invention

[0004] This application provides a display screen and an electronic device, reducing the risk of the occurrence of the light crosstalk problem.

[0005] In a first aspect of this application, a display screen is provided, including: a display backplane and a light-emitting layer; a plurality of recesses are recessed on the surface of the display backplane, and there is a support portion between any two adjacent recesses; support protrusions are protruded on the surface of some support portions; the light-emitting layer includes a common layer and a plurality of sub-pixels; the plurality of sub-pixels are respectively arranged in the plurality of recesses; the common layer includes a first common portion and a second common portion; the first common portion is laminated on the surface of the support portion; the second common portion is laminated on the plurality of sub-pixels; an isolation member is provided around each of at least some of the sub-pixels; the isolation member is arranged on the support portion, the isolation member passes through the first common portion, and in the direction from the light-emitting layer to the display backplane, the surface of the isolation member facing away from the support portion is lower than the surface of the support protrusion facing away from the support portion.

[0006] Generally, the plurality of sub-pixels of the display screen all include a first sub-pixel, a second sub-pixel, and a third sub-pixel, and the first sub-pixel, the second sub-pixel, and the third sub-pixel are pixels with different colors. For example: the first sub-pixel is a red pixel, the second sub-pixel is a green pixel, and the third sub-pixel is a blue pixel.

[0007] In the related art, no isolation member is provided, so the problem of light crosstalk is likely to occur when the display screen emits light. For example: when displaying a certain picture, only the first sub-pixel needs to emit light, but when the common layer transmits current to the first sub-pixel, the current also passes through the common layer and is transmitted to the second sub-pixel, resulting in the second sub-pixel emitting light, that is, preventing the light crosstalk problem caused by lateral current leakage. At this time, the current transmitted to the second sub-pixel is very small, which will also cause the second sub-pixel to emit a weak light, and the light emitted by the second sub-pixel will cause the clarity of the displayed picture to deteriorate.

[0008] In this embodiment, by providing a separator, at least a part of the common layer between two adjacent sub-pixels is in a disconnected state. Therefore, when current is transmitted to the sub-pixel that needs to emit light, the separator blocks the current from being transmitted to the adjacent sub-pixel that does not need to emit light, thereby preventing the adjacent sub-pixels from emitting light, reducing the risk of optical crosstalk problems, and improving the clarity of the displayed image on the display screen.

[0009] In addition, in this embodiment, the sub-pixels of the light-emitting layer are prepared into the recesses of the display backplane using an evaporation process. When processing the display screen, the separator is first prepared on the support part, and then the sub-pixels of the light-emitting layer are prepared on the support part. After the separator is prepared on the support part, a mask plate is used for masking to facilitate the preparation of the sub-pixels of the light-emitting layer. When the mask plate is used for masking, it will contact the support protrusion. In this embodiment, the surface of the separator is set lower than the surface of the support protrusion. When the mask plate contacts the support protrusion, there is a gap H between the mask plate and the separator, which can prevent the mask plate from scraping the separator, thereby preventing the problem of black spots caused by particles in the sub-pixels and preventing the crosstalk prevention effect of the separator from weakening.

[0010] In some embodiments, a plurality of separators are arranged in an array; the first common part includes a first channel part and a second channel part; the first channel part is located between two adjacent rows of separators, and the second channel part is located between two adjacent columns of separators; current is transmitted to the sub-pixels through the first channel part and / or the second channel part.

[0011] In some embodiments, the separator has a notch, and the first common part further includes a connecting part, and the connecting part is arranged in the notch; the connecting part is connected between the first channel part and the second common part, and / or, the connecting part is connected between the second channel part and the second common part. There are no bent positions in both the first channel part and the second channel part, which can shorten the current transmission path, reduce the current loss, and quickly transmit the current to the sub-pixels; ensure smooth current transmission, improve the cathode voltage drop, and improve the brightness uniformity of the center and edge of the display screen.

[0012] In some embodiments, along the direction from the support part to the recess, it faces the first channel part or the second channel part. This can enable the current to be quickly transmitted to the sub-pixels and ensure smooth current transmission.

[0013] In some embodiments, the notches of at least some of the separators face the same direction. This can facilitate the processing of the display screen.

[0014] In some embodiments, the notches of some of the separators face the first direction, and the notches of the other part of the separators face the second direction, and both the first direction and the second direction are perpendicular to the thickness direction. Thus, the current flows to each sub-pixel with almost the same probability.

[0015] In some embodiments, among multiple sub-pixels, four sub-pixels are distributed at the four corner positions of a square region, and the orientations of the notches of the spacers around the four sub-pixels are arranged in a clockwise or counterclockwise manner. This enables the sub-pixels to have the same probability of the current paths of the first channel portion and the second channel portion, improving the picture brightness uniformity of the display screen.

[0016] In some embodiments, the support portion is provided with a spacer region; the spacer region surrounds the spacer for one week to separate the spacer and the first common portion. The spacer region plays a physical isolation role and can enhance the isolation effect.

[0017] In some embodiments, along the direction from the light-emitting layer to the display backplane, the width of the spacer gradually decreases; the spacer includes a first isolation surface and a second isolation surface, and along the thickness direction of the display screen, the first isolation surface and the second isolation surface are arranged in opposite directions; along the direction from the support portion to the concave portion, the width of the first isolation surface is smaller than the width of the second isolation surface; along the thickness direction, a part of the first isolation surface faces the second isolation surface, and another part of the first isolation surface faces the spacer region.

[0018] The common layer of the display layer is also prepared by an evaporation process, and the mask device used for evaporating the common layer is different from the mask plate used for evaporating the sub-pixels. When the common layer is evaporated onto the support portion using the evaporation process, the raw materials for preparing the common layer splash from the side of the mask device facing away from the display backplane to the mask device along the Z-axis direction, and then splash from the mask device to the support portion. Since the spacer region is blocked by the first isolation surface, the raw materials for preparing the common layer cannot be evaporated onto the spacer region, thereby enabling the above-mentioned spacer region between the spacer and the first common portion, so that the spacer and the common layer do not contact. The spacer region can enhance the isolation effect and improve the anti-crosstalk effect.

[0019] In some embodiments, the spacer further includes a first side surface and a second side surface, the first side surface and the second side surface are arranged in opposite directions, and the first side surface is connected between one side of the first isolation surface and the second isolation surface, and the second side surface is connected between the other side of the first isolation surface and the second isolation surface; the angle between the first side surface and the reference surface is greater than or equal to 40 degrees and less than or equal to 80 degrees, and the reference surface is parallel to the surface of the support portion. During the evaporation process, since some raw materials may be inclined in the Z-axis direction, setting the first angle to be greater than or equal to 40 degrees and less than or equal to 80 degrees, and setting the second angle to be greater than or equal to 40 degrees and less than or equal to 80 degrees enables the spacer region to have sufficient shielding to prevent the raw materials moving obliquely from splashing onto the spacer region.

[0020] In some embodiments, the spacer protrudes from the surface of the support portion. This design is convenient for processing.

[0021] In some embodiments, the surface of the support portion is recessed with a groove, and at least a part of the spacer is disposed in the groove. By providing the groove and disposing the spacer in the groove, the spacer can have a sufficient thickness to increase the isolation effect of the spacer, and the spacer can be prevented from being scraped by the pickling film plate.

[0022] In some embodiments, the spacer is disposed in the groove, and in the direction from the light-emitting layer to the display backplane, the surface of the spacer facing away from the groove is lower than the surface of the support portion. The spacer is disposed in the groove, and the spacer is completely located in the groove. In other words, the surface of the spacer facing away from the bottom surface of the groove is lower than the opening of the groove, so that the surface of the spacer is lower than the surface of the support protrusion. When the pickling film plate contacts the support protrusion, there is a gap H between the pickling film plate and the spacer, which can prevent the pickling film plate from scraping the spacer, thereby preventing the problem of black spots caused by particals in the sub-pixels and preventing the crosstalk prevention effect of the spacer from being weakened. And in this solution, the height of the spacer in the Z-axis direction can be relatively thick, and thus has a better isolation effect.

[0023] In some embodiments, the groove is recessed in the surface of the support protrusion and extends to the support portion. The spacer is disposed inside the groove, and the surface of the spacer facing away from the bottom surface of the groove is lower than the opening of the groove, that is, the surface of the spacer facing away from the bottom surface of the groove is lower than the surface of the support protrusion. That is to say, the support protrusion and the spacer can share a support portion, so that the support portion is fully utilized. In addition, since the total thickness of the support protrusion and the support portion is relatively thick, the depth of the groove can be set relatively deep. When the spacer is disposed in the groove, the height of the spacer can be set relatively thick, thereby increasing the isolation effect.

[0024] In some embodiments, the display backplane includes a pixel definition layer, a planarization layer, and a substrate; in the thickness direction, the pixel definition layer, the planarization layer, and the substrate are sequentially stacked and fixed; the pixel definition layer and the planarization layer enclose a recess.

[0025] In some embodiments, the display screen further includes a packaging device, and the packaging device includes a packaging layer, a polarizing layer, and a cover plate; in the thickness direction, the packaging layer, the polarizing layer, and the cover plate are sequentially stacked and fixed; the side of the packaging layer facing away from the polarizing layer covers and is connected to the common layer.

[0026] The second aspect of the present application provides an electronic device, including a housing and the display screen according to any one of the first aspects of the present application, and the display screen is installed in the housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background art, the following will describe the drawings required to be used in the embodiments of the present application or the background art.

[0028] Figure 1 It is a schematic structural diagram of a mobile phone provided by an embodiment of the present application.

[0029] Figure 2 is Figure 1 Schematic diagram of the split structure of the mobile phone shown in

[0030] Figure 3 is Figure 2 Schematic diagram of the internal structure of the display screen of the mobile phone shown in

[0031] Figure 4 is Figure 2 Another schematic diagram of the internal structure of the display screen of the mobile phone shown in

[0032] Figure 5 is Figure 4 Schematic diagram of the internal structure of the light-emitting layer of the display screen shown in

[0033] Figure 6 is Figure 4 Schematic diagram of the internal structure of another embodiment of the light-emitting layer of the display screen shown in

[0034] Figure 7 is Figure 6 Equivalent circuit diagram of the light-emitting layer shown in

[0035] Figure 8 is Figure 4 Schematic diagram of the internal structure of the display backplane of the display screen shown in

[0036] Figure 9 is Figure 8 Enlarged schematic diagram of the spacer shown in

[0037] Figure 10 is Figure 4 Partial enlarged schematic diagram of the schematic diagram of the internal structure of the display screen shown in

[0038] Figure 11 is prepared using a pickling film plate Figure 4 Schematic diagram of the structure of the display screen shown in

[0039] Figure 12 is Figure 4 Top view schematic diagram of the partial structure of the display screen shown in

[0040] Figure 13 is Figure 12 Partial enlarged schematic diagram of the display screen described above

[0041] Figure 14 is Figure 4 Top view schematic diagram of the partial structure of another embodiment of the display screen shown in

[0042] Figure 15 is Figure 14Schematic diagram of a partially enlarged structure of the display screen shown therein.

[0043] Figure 16 is Figure 4 Top view schematic diagram of a partial structure of another embodiment of the display screen shown therein.

[0044] Figure 17 is Figure 16 Schematic diagram of a partially enlarged structure of the display screen shown therein.

[0045] Figure 18 Schematic diagram of the internal structure of the display screen provided by another embodiment of the present application.

[0046] Figure 19 is Figure 18 Schematic diagram of a partially enlarged structure of the display screen described therein.

[0047] Figure 20 is the structure diagram of the display screen shown in Figure 18 prepared using a pickling film plate.

[0048] Figure 21 Schematic diagram of a partial structure of the display screen provided by another embodiment of the present application.

[0049] Figure 22 Schematic diagram of a partial structure of the display screen provided by yet another embodiment of the present application. Detailed implementation manners

[0050] The embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

[0051] The present application provides an electronic device, which includes but is not limited to a cellphone, a notebook computer, a tablet personal computer, a personal digital assistant, a wearable device or a mobile device, etc. The wearable device may specifically be a wearable watch, a wearable bracelet, etc. The cellphone may be a straight-type cellphone or a foldable cellphone.

[0052] In this embodiment, the electronic device is taken as an example of a straight-type cellphone for illustration. Please refer to Figure 1 and Figure 2 , Figure 1 is the structure diagram of the cellphone 1000 provided by the embodiment of the present application. Figure 2 is Figure 1 Schematic diagram of the split structure of the cellphone 1000 shown therein.

[0053] For ease of description, the width direction of the mobile phone 1000 is defined as the X-axis direction, the length direction of the mobile phone 1000 is defined as the Y-axis direction, and the thickness direction of the mobile phone 1000 is defined as the Z-axis direction. The X-axis direction, Y-axis direction, and Z-axis direction are perpendicular to each other in pairs.

[0054] In this embodiment, the mobile phone 1000 includes a main body 200 and a display screen 100.

[0055] In this embodiment, the main body 200 includes a housing 210, a circuit board 220, and a battery 230. The circuit board 220 and the battery 230 are both installed inside the housing 210. The housing 210 includes a middle frame 240 and a rear cover 250. The middle frame 240 includes a middle plate and a border. The border surrounds the middle plate and is connected to the middle plate. The middle plate and the border enclose a receiving cavity for installing devices such as the circuit board 220 and the battery 230. The rear cover 250 is fixed to one side of the border along the Z-axis direction, and the rear cover 250 closes the receiving cavity.

[0056] Multiple chips are integrated on the circuit board 220, and the multiple chips may include a power management chip, etc. The power management chip is electrically connected to the battery 230 and the display screen 100 respectively. The display screen 100 is installed on the side of the middle frame 240 facing away from the rear cover 250. The battery 230 can supply power to devices such as the display screen 100 through the power management chip.

[0057] The display screen 100 can be an organic light-emitting diode (OLED) display. The display screen 100 can have a touch function. The display screen 100 is used to operate the mobile phone 1000 and display information such as images and videos. The display screen 100 includes a display surface and an installation surface. The display screen 100 is installed on the main body 200, and the installation surface of the display screen 100 faces the main body 200, and the display surface of the display screen 100 faces away from the main body 200.

[0058] Please refer to Figure 3 , Figure 3 is Figure 2 a schematic internal structure diagram of the display screen 100 of the mobile phone 1000 shown in. In this embodiment, the display screen 100 includes a display backplane 10, a light-emitting layer 20, a packaging device 30, and a spacer 40. Along the Z-axis direction, the display backplane 10, the light-emitting layer 20, and the packaging device 30 are stacked. The spacer 40 passes through the light-emitting layer 20 to prevent light crosstalk.

[0059] Please refer to Figure 4 , Figure 4 is Figure 2Another internal structure schematic diagram of the display screen 100 of the mobile phone 1000 shown in the figure. In this embodiment, the encapsulation device 30 includes an encapsulation layer 31, a polarizing layer 32, and a cover plate 33. The display backplane 10 includes a pixel definition layer 11, a planarization layer 12, and a substrate 13. Along the Z-axis direction, the cover plate 33, the polarizing layer 32, the encapsulation layer 31, the light-emitting layer 20, the pixel definition layer 11, the planarization layer 12, and the substrate 13 are sequentially stacked and fixed. In other embodiments, the display screen 100 may further include structures such as a protective layer, which is not limited in this application. In other embodiments, the encapsulation device 30 and the display backplane 10 may also be set to other layer structures, which is not limited in this application. The spacer 40 is embedded in the encapsulation layer 31.

[0060] Please refer to Figure 5 , Figure 5 is Figure 4 An internal structure schematic diagram of the light-emitting layer 20 of the display screen 100 shown in the figure. In this embodiment, the light-emitting layer 20 may include an anode layer 21, a cathode layer 22, and a light-emitting functional layer 23. Along the Z-axis direction, the anode layer 21, the light-emitting functional layer 23, and the cathode layer 22 are sequentially stacked. The light-emitting functional layer 23 includes a hole injection layer 24 and at least one functional layer 25. The functional layer 25 includes an electron transport layer 251, a pixel layer 252, and a hole transport layer 253 that are sequentially stacked and fixed along the Z-axis direction. The pixel layer 252 includes a plurality of sub-pixels 254, and the plurality of sub-pixels 254 are arranged in an array. Every three sub-pixels 254 form a pixel unit, and the pixel layer 252 includes a plurality of pixel units. Specifically, each pixel unit includes a first sub-pixel 26, a second sub-pixel 27, and a third sub-pixel 28, where the first sub-pixel 26, the second sub-pixel 27, and the third sub-pixel 28 may be a red pixel, a green pixel, and a blue pixel respectively. The arrangement manner of the first sub-pixel 26, the second sub-pixel 27, and the third sub-pixel 28 is only exemplary. For example, a plurality of pixel units are arranged in an array; actually, the first sub-pixel 26, the second sub-pixel 27, and the third sub-pixel 28 may also be other layout manners, and the layout manner shown in the figure does not constitute a limitation to this application. The anode layer 21 includes a plurality of independent anode blocks 211, and the number of anode blocks 211 is the same as the number of sub-pixels 254. And the plurality of sub-pixels 254 and the plurality of anode blocks 211 correspond one by one along the Z-axis direction. In other words, the orthographic projections of the plurality of anode blocks 211 on the cathode layer 22 cover the orthographic projections of the plurality of sub-pixels 254 on the cathode layer 22 one by one.

[0061] In this embodiment, the light-emitting layer 20 includes a functional layer 25. Along the Z-axis direction, the cathode layer 22, the functional layer 25, the hole injection layer 24, and the anode layer 21 are stacked in sequence. Among them, the surface of the electron transport layer 251 facing away from the pixel layer 252 is connected to the cathode layer 22, and the surface of the hole transport layer 253 facing away from the pixel layer 252 is connected to the hole injection layer 24. In this embodiment, the cathode layer 22, the electron transport layer 251, the hole transport layer 253, and the hole injection layer 24 are all common layers 300.

[0062] In this embodiment, the common layer 300 includes a first common part 310 and a second common part 320. The second common part 320 is stacked on a plurality of sub-pixels 254, and the first common part 310 is used to connect to the second common part 320. When the battery 230 powers the display screen 100 through the power management chip, the current is transmitted from the periphery to the middle of the display screen 100 through the first common part 310, and then transmitted from the first common part 310 to the second common part 320. Then, the second common part 320 transmits the current to the pixel layer 252, so that the sub-pixels 254 of the pixel layer 252 can emit light.

[0063] Please refer to Figure 6 , Figure 6 is Figure 4 the internal structure schematic diagram of another embodiment of the light-emitting layer 20 of the display screen 100 shown in Figure 7 . Figure 7 is Figure 6 the equivalent circuit diagram of the light-emitting layer 20 shown in

[0064] Please refer to Figure 8 . Figure 8 is Figure 4Schematic diagram of the internal structure of the display backplane 10 of the display screen 100 shown. The display backplane 10 includes a first surface 15 and a second surface 16, and the first surface 15 and the second surface 16 face away from each other along the Z-axis direction. A plurality of recesses 17 are recessed in the first surface 15 of the display backplane 10, and a support portion 18 is formed between two adjacent recesses 17. Specifically, the display backplane 10 includes a pixel definition layer 11, a planarization layer 12, and a substrate 13, and the substrate 13 can be made of a thin film transistor (TFT). The pixel definition layer 11 is provided with a plurality of through holes, and along the Z-axis direction, the through holes penetrate through the pixel definition layer 11. Along the Z-axis direction, the pixel definition layer 11, the planarization layer 12, and the substrate 13 are stacked and fixed in sequence. The surface of the pixel definition layer 11 facing away from the planarization layer 12 is the first surface 15, and the surface of the substrate 13 facing away from the planarization layer 12 is the second surface 16. The planarization layer 12 and the pixel definition layer 11 form a plurality of recesses 17. The wall surface of the through hole is the groove side surface of the recess 17, and the surface of the planarization layer 12 covering the through hole is the groove bottom surface of the recess 17.

[0065] In this embodiment, a support protrusion 19 protrudes from the surface of some of the support portions 18, and an isolation member 40 is provided on another part of the support portions 18. The isolation member 40 can be made of an insulating material such as a negative photoresist. The surface of the support portion 18 is the above-mentioned first surface 15. In this embodiment, the light-emitting layer 20 is prepared layer by layer on the display backplane 10 through an evaporation process. When evaporating the sub-pixel 254 into the recess 17 of the display backplane 10, a mask plate 50 ( Figure 11 shown in) is required for the evaporation process. The support protrusion 19 is used to support the mask plate 50 to reduce the contact area between the mask plate 50 and the support portion 18 and prevent the mask plate 50 from causing large-area damage to the display backplane 10. The isolation member 40 is used to at least partially disconnect the common layer 300 between two adjacent sub-pixels 254 to reduce the risk of light crosstalk problems.

[0066] In this embodiment, along the Z-axis direction, specifically, the direction from the light-emitting layer 20 to the display backplane 10, Figure 8 in the direction from top to bottom shown in, the surface of the isolation member 40 facing away from the support portion 18 is lower than the surface of the support protrusion 19 facing away from the support portion 18. The thickness difference between the surface of the isolation member 40 facing away from the support portion 18 and the surface of the support protrusion 19 facing away from the support portion 18 is H1, and H1 can be between 0.1 micrometer and 1 micrometer. The height of the isolation member 40 along the Z-axis direction is between 0.5 micrometer and 2 micrometers, and the height of the isolation member 40 along the Z-axis direction can specifically be 0.5 micrometer, 0.8 micrometer, 1 micrometer, 1.5 micrometers, 1.8 micrometers, or 2 micrometers.

[0067] Please refer to Figure 9 , Figure 9 is Figure 8Schematic enlarged structure diagram of the spacer 40 shown in the figure. In this embodiment, the spacer 40 protrudes from the surface of the support portion 18. Along the direction from the light-emitting layer 20 towards the display backplane 10, the width of the spacer 40 gradually decreases. The spacer 40 includes a first isolation surface 42 and a second isolation surface 43. Along the thickness direction of the display screen 100, the first isolation surface 42 and the second isolation surface 43 are arranged opposite to each other; along the direction from the support portion 18 towards the recess 17, the width of the first isolation surface 42 is smaller than the width of the second isolation surface 43.

[0068] The spacer 40 further includes a first side surface 44 and a second side surface 45. The first side surface 44 and the second side surface 45 are arranged opposite to each other. The first side surface 44 is connected between one side of the first isolation surface 42 and the second isolation surface 43, and the second side surface 45 is connected between the other side of the first isolation surface 42 and the second isolation surface 43. Both the first side surface 44 and the second side surface 45 are inclined surfaces, and the first angle a between the first side surface 44 and the reference plane L is greater than or equal to 40 degrees and less than or equal to 80 degrees. The first angle a can specifically be 40 degrees, 50 degrees, 60 degrees, 70 degrees, 80 degrees, or 90 degrees, etc. The second angle b between the second side surface 45 and the reference plane L is greater than or equal to 40 degrees and less than or equal to 80 degrees. The second angle b can specifically be 40 degrees, 45 degrees, 55 degrees, 65 degrees, 75 degrees, 85 degrees, or 90 degrees, etc. The reference plane L is parallel to the first surface 15 of the display backplane 10, and it can also be understood that the reference plane L is parallel to the surface of the support portion 18. Specifically, the spacer 40 has a trapezoidal cross-section 41. The lower base of the trapezoidal cross-section 41 is located on the first isolation surface 42, and the upper base of the trapezoidal cross-section 41 is located on the second isolation surface 43. The two waists of the trapezoidal cross-section 41 are respectively located on the first side surface 44 and the second side surface 45. Thus, along the Z-axis direction, a part of the first isolation surface 42 faces the second isolation surface 43, and another part of the first isolation surface 42 faces a part of the surface of the support portion 18. The part of the surface of the support portion 18 that faces the first isolation surface 42 is called the spacer area 181. In other words, along the Z-axis direction, the orthographic projection of the first isolation surface 42 on the surface of the support portion 18 covers the spacer area 181. The spacer area 181 is used to prevent the common layer of the spacer 40 and the light-emitting layer 20 from coming into contact, so as to prevent the isolation effect of the spacer 40 from weakening.

[0069] In other embodiments, the spacer 40 is made of an insulating material. Therefore, the common layer 300 can also be in contact with the first side surface and / or the second side surface 45 of the spacer 40.

[0070] Please refer to Figure 10 , Figure 10 is Figure 4Partial enlarged structural schematic diagram of the internal structure schematic diagram of the display screen 100 shown. In this embodiment, when the light-emitting layer 20 is stacked on the display backplane 10, the first common part 310 is stacked on the surface of the support part 18, and a plurality of sub-pixels 254 are respectively located in a plurality of recesses 17. The second common part 320 is stacked on the plurality of sub-pixels 254 and is located in the plurality of recesses 17. The spacer 40 penetrates the common layer 300. Specifically, the spacer 40 penetrates the first common part 310, and the spacer 40 and the first common part 310 are spaced apart by a spacer area 181. And the surface of the spacer 40 is lower than the surface of the support protrusion 19. Specifically, when the light-emitting layer 20 includes a functional layer 25, the spacer 40 penetrates the cathode layer 22, the electron transport layer 251, the hole transport layer 253, and the hole injection layer 24. When the light-emitting layer 20 includes two functional layers 25, the spacer 40 penetrates the cathode layer 22, the electron transport layer 251, the hole transport layer 253, the hole injection layer 24, and the charge generation layer 29. Since the thickness of the light-emitting layer 20 is in the micron level, setting the spacer 40 to penetrate the entire common layer 300 is convenient for processing.

[0071] A spacer 40 is provided around at least some of the sub-pixels 254. It can also be understood that there are a plurality of spacers 40, and the plurality of spacers 40 are respectively provided around the plurality of sub-pixels 254. In other words, since the support part 18 is located between two adjacent recesses 17 and the sub-pixels 254 are arranged in the recesses 17, when the spacer 40 is provided on the support part 18, it also means that the spacer 40 is located around the sub-pixels 254. In a specific embodiment, a spacer 40 is provided around all the sub-pixels 254. In another embodiment, a spacer 40 is provided around all the first sub-pixels 26 and all the second sub-pixels 27, and no spacer 40 is provided around the third sub-pixels 28. In yet another specific embodiment, a spacer 40 is provided around some of the first sub-pixels 26, some of the second sub-pixels 27, and some of the third sub-pixels 28.

[0072] In the related art, no spacer 40 is provided, so light crosstalk problems are likely to occur when the display screen 100 emits light. For example: when displaying a certain picture, only the first sub-pixel 26 needs to emit light. However, when the common layer 300 transmits current to the first sub-pixel 26, the current also passes through the common layer 300 and is transmitted to the second sub-pixel 27, resulting in the second sub-pixel 27 emitting light, that is, to prevent the light crosstalk problem caused by horizontal current leakage. At this time, the current transmitted to the second sub-pixel 27 is very small, which will also cause the second sub-pixel 27 to emit a weak light, and the light emitted by the second sub-pixel 27 will cause the clarity of the displayed picture to deteriorate.

[0073] In this embodiment, by providing an isolation member 40, the common layer 300 between two adjacent sub-pixels 254 is at least partially in a disconnected state. Therefore, when current is transmitted to the sub-pixel 254 that needs to emit light, the isolation member 40 blocks the current from being transmitted to the adjacent sub-pixel 254 that does not need to emit light, thereby preventing the adjacent sub-pixel 254 from emitting light, reducing the risk of light crosstalk problems, and improving the clarity of the image displayed on the display screen 100.

[0074] Please refer to Figure 11 , Figure 11 It is prepared using pickled film plate 50 Figure 4 Schematic diagram of the structure of the display screen 100 shown in . When the light-emitting layer 20 is prepared by the evaporation process, the isolation member 40 will be prepared on the support portion 18 when the display screen 100 is processed. After the isolation member 40 is prepared on the support portion 18, a curing plate 50 is used for curing, so that the sub-pixel 254 of the light-emitting layer 20 can be evaporated into the concave portion 17. When the curing plate 50 is cured, it will contact the support protrusion 19. In this embodiment, the surface of the isolation member 40 is set lower than the surface of the support protrusion 19. When the curing plate 50 contacts the support protrusion 19, there is a gap H between the curing plate 50 and the isolation member 40, which can prevent the curing plate 50 from scratching the isolation member 40, thereby preventing the sub-pixel 254 from having particals and causing black spots, and preventing the anti-crosstalk effect of the isolation member 40 from being weakened.

[0075] In addition, the common layer 300 is also processed by the evaporation process. When preparing the common layer 300, a film-curing device is used. The film-curing device is a square frame and is arranged around the outer periphery of the display backplane so that the common layer 300 can cover the entire display backplane. When the common layer 300 is evaporated onto the support portion 18 by the evaporation process, the raw material for preparing the common layer 300 splashes from the side of the film-curing device away from the display backplane 10 to the film-curing device along the Z-axis direction, and then splashes from the film-curing device to the recess 17. Because the spacer 181 is blocked by the first isolation surface 42, the raw material for preparing the common layer 300 cannot be evaporated onto the spacer 181, thereby making the above-mentioned spacer 181 between the isolation member 40 and the first common portion 310, so that the isolation member 40 and the common layer 300 do not contact each other. The spacer 181 can enhance the isolation effect and further improve the anti-crosstalk effect.

[0076] During the vapor deposition process, since part of the raw materials may be tilted in the Z-axis direction, the first angle a is set to be greater than or equal to 40 degrees and less than or equal to 80 degrees, and the second angle b is set to be greater than or equal to 40 degrees and less than or equal to 80 degrees, so that the spacing area 181 has sufficient shielding to prevent the tilted raw materials from splashing into the spacing area 181.

[0077] Please refer to Figure 12 , Figure 12 yesFigure 4 A top view schematic diagram of a partial structure of the display screen 100 shown in [reference]. In this embodiment, multiple pixel units are arranged in an array. Specifically, in each pixel unit, the first sub-pixel 26 and the second sub-pixel 27 are arranged at intervals along the Y-axis direction, and the third sub-pixel 28 is located on the right side of the first sub-pixel 26 and the second sub-pixel 27. The first sub-pixel 26 and the second sub-pixel 27 are both square, and the third sub-pixel 28 is rectangular. Along the X-axis direction, a part of the third sub-pixel 28 is arranged at intervals with the first sub-pixel 26, and another part of the third sub-pixel 28 is arranged at intervals with the second sub-pixel 27. It can be understood that the arrangement of the multiple recesses 17 needs to be determined according to the arrangement of the multiple sub-pixels. Specifically, the arrangement of the multiple recesses 17 is the same as the arrangement of the multiple sub-pixels 254. The arrangement of the first sub-pixel 26, the second sub-pixel 27, and the third sub-pixel 28 is only exemplary. In fact, the first sub-pixel 26, the second sub-pixel 27, and the third sub-pixel 28 can also be other layout manners. Figure 12 The layout manner shown in [reference] does not constitute a limitation to this application.

[0078] The first sub-pixel 26 is a red pixel, the second sub-pixel 27 is a green pixel, and the third sub-pixel 28 is a blue pixel. Generally, the lifespan of the blue pixel is shorter than that of the red pixel and the green pixel. By setting the volume of the blue pixel to be larger than that of the red pixel and the green pixel, the current density of the blue pixel is reduced, thereby increasing the lifespan of the blue pixel, so that the lifespans of the blue pixel, the red pixel, and the green pixel are basically the same, which can increase the emission uniformity of the display screen 100 and extend the service life of the display screen 100.

[0079] Multiple spacers 40 are respectively located around multiple sub-pixels 254. The multiple pixel units are arranged in an array, and the arrangement manner of the three sub-pixels 254 in each pixel unit is the same, so that the multiple spacers 40 around the sub-pixels 254 can be arranged in an array. The spacers 40 are arranged in an array, so that the first common portion 310 forms a first channel portion 311 and a second channel portion 312. The first channel portion 311 is located between adjacent two rows of spacers 40, and the second channel portion 312 is located between adjacent two columns of spacers 40; the current is transmitted to the sub-pixel 254 through the first channel portion 311 and / or the second channel portion 312. There are no bent positions in both the first channel portion 311 and the second channel portion 312, which can shorten the current transmission path, reduce the current loss, and quickly transmit the current to the sub-pixel 254; ensure smooth current transmission, improve the cathode voltage drop, and improve the brightness uniformity of the center and the edge of the display screen 100. In addition, the first channel portion 311 and the second channel portion 312 are distributed at a 90-degree angle, and the first channel portion 311 and the second channel intersect each other, so that the current transmission is faster and more uniform.

[0080] After the spacers 40 are arranged in an array, each spacer 40 in the array has a notch. The first common portion 310 further includes a connecting portion 330, and the connecting portion 330 is disposed in the notch. The connecting portion 330 is connected between the first channel portion 311 and the second common portion 320, and / or the connecting portion 330 is connected between the second channel portion 312 and the second common portion 320. It faces the first channel portion 311 or the second channel portion 312. Since the spacer 40 penetrates the entire common layer 300, that is, the spacer 40 cuts off the cathode layer 22. At this time, by providing a notch, a part of the cathode layer 22 is still in a continuous state, so that current can be transmitted between the first common portion 310 and the second common portion 320. Thus, the risk of optical crosstalk problems can be reduced, and the smoothness of current transmission can be prevented.

[0081] Please refer to Figure 12 and Figure 13 , Figure 13 is Figure 12 a partially enlarged structural schematic diagram of the display screen 100 described above. The spacer 40 includes a first spacer 60, a second spacer 70, and a third spacer 80. The first spacer 60 is disposed around the first sub-pixel 26, and the first spacer 60 is provided with a first notch 64. The second spacer 70 is disposed around the second sub-pixel 27, and the second spacer 70 is provided with a second notch 74. The third spacer 80 is disposed around the third sub-pixel 28, and the third spacer 80 is provided with a third notch 85.

[0082] The corresponding relationship between the sub-pixel 254 and the spacers 40 around it will be described in detail below.

[0083] Please refer to Figure 12 and Figure 13 , in the first specific embodiment, the first sub-pixel 26 includes a first side 261, a second side 262, a third side 263, and a fourth side 264. The first spacer 60 is generally U-shaped. The first spacer 60 includes a first isolation segment 61, a second isolation segment 62, and a third isolation segment 63, and the first isolation segment 61, the second isolation segment 62, and the third isolation segment 63 are connected in sequence. The spacer 40 is provided with a first notch 64, and the first notch 64 is opposite to the third isolation segment 63. Along the direction perpendicular to the Z-axis, the first isolation segment 61 and the first side 261 are spaced apart and opposite, the second isolation segment 62 and the second side 262 are spaced apart and opposite, the third isolation segment 63 and the third side 263 are spaced apart and opposite, and the first notch 64 and the fourth side 264 are opposite. The orientations of the first notches 64 of all the first spacers 60 are the same.

[0084] The first isolation segment 61 and the third isolation segment 63 reduce the risk of optical crosstalk problems occurring between the first sub-pixel 26 and the adjacent third sub-pixel 28, and the second isolation segment 62 reduces the risk of optical crosstalk problems occurring between the first sub-pixel 26 and the adjacent second sub-pixel 27. The first notch 64 allows current to be smoothly transmitted to the first sub-pixel 26.

[0085] The second isolation member 70 around the second sub-pixel 27 has the same shape as the first isolation member 60. The second isolation member 70 includes a fourth isolation segment 71, a fifth isolation segment 72, and a sixth isolation segment 73. The second isolation member 70 is provided with a second notch 74. The positional correspondence between the second isolation member 70 and the second sub-pixel 27 refers to the positional correspondence between the first isolation member 60 and the first sub-pixel 26. The orientations of the second notches 74 of all the second isolation members 70 are the same.

[0086] The fourth isolation segment 71 and the sixth isolation segment 73 can reduce the risk of optical crosstalk problems occurring between the second sub-pixel 27 and the adjacent third sub-pixel 28, and the fifth isolation segment 72 can reduce the risk of optical crosstalk problems occurring between the second sub-pixel 27 and the adjacent first sub-pixel 26. The second notch 74 allows current to be smoothly transmitted to the second sub-pixel 27.

[0087] The third sub-pixel 28 includes a first long side 281, a second long side 282, a first short side 283, and a second short side 284. The third isolation member 80 includes a seventh isolation segment 81, an eighth isolation segment 82, a ninth isolation segment 83, and a tenth isolation segment 84. Third notches 85 are provided between the seventh isolation segment 81 and the eighth isolation segment 82, between the ninth isolation segment 83 and the tenth isolation segment 84, between the seventh isolation segment 81 and the ninth isolation segment 83, and between the eighth isolation segment 82 and the tenth isolation segment 84. Both the seventh isolation segment and the eighth isolation segment are spaced opposite to the first long side 281, and both the ninth isolation segment and the tenth isolation segment are spaced opposite to the second long side 282. Four of the third notches 85 are respectively opposite to the first long side 281, the second long side 282, the first short side 283, and the second short side 284.

[0088] The seventh isolation segment 81 and the ninth isolation segment 83 can reduce the risk of optical crosstalk problems occurring between the third sub-pixel 28 and the adjacent first sub-pixel 26, and the eighth isolation segment 82 and the ninth isolation segment 83 can reduce the risk of optical crosstalk problems occurring between the third sub-pixel 28 and the adjacent second sub-pixel 27. The third notch 85 allows current to be smoothly transmitted to the third sub-pixel 28.

[0089] A plurality of spacers 40 are arranged in four rows and five columns. In the array formation, both the first row and the third row are: the first spacer 60, the seventh isolation section 81 of the third spacer 80, and the ninth isolation section 83 of the third spacer 80. Both the second row and the fourth row are: the second spacer 70, the eighth isolation section 82 of the third spacer 80, and the tenth isolation section 84 of the third spacer 80. Both the first column and the fourth column are: the first spacer 60, the second spacer 70, the first spacer 60, the second spacer 70. Both the second column and the fifth column are: the seventh isolation section 81 of the third spacer 80, the eighth isolation section 82 of the third spacer 80, the seventh isolation section 81 of the third spacer 80, the eighth isolation section 82 of the third spacer 80. Both the third column and the sixth column are: the ninth isolation section 83 of the third spacer 80, the tenth isolation section 84 of the third spacer 80, the ninth isolation section 83 of the third spacer 80, the tenth isolation section 84 of the third spacer 80.

[0090] In the first specific embodiment, a plurality of first channel portions 311 and a plurality of second channel portions 312 are formed. Specifically, the first channel portion 311 extends along the X-axis direction, the second channel portion 312 extends along the Y-axis direction. The first channel portion 311 transmits the current at the left edge of the display screen 100 to the sub-pixel 254, and the second channel portion 312 transmits the current at the upper edge of the display screen 100 to the sub-pixel 254.

[0091] In the first specific embodiment, connection portions 330 are provided at the first notch 64, the second notch 74, and the third notch 85. The connection portions 330 at the first notch 64 and the second notch 74 are both connected between the first channel portion 311 and the second common portion 320. The connection portion 330 of the third notch 85 forms a part of the second channel portion 312 and is connected to the first channel portion 311. Both the first notch 64 and the second notch 74 are directly opposite to the first channel portion 311. Therefore, the current can be quickly transmitted from the first channel portion 311 to the first sub-pixel 26 and the second sub-pixel 27. Of course, since the first channel portion 311, the second channel portion 312, the connection portion 330, and the second common portion 320 are all connected as a whole, the second channel portion 312 can also transmit the current to the first sub-pixel 26 and the second sub-pixel 27. The third notch 85 is directly opposite to the second channel portion 312, and the first channel portion 311 directly passes through the third notch 85. Therefore, the current can be quickly transmitted from the first channel portion 311 and the second channel portion 312 to the third sub-pixel 28. The orientations of the first notch 64, the second notch 74, and the third notch 85 are the same. Thus, it is convenient for processing.

[0092] Please refer to Figure 14 and Figure 15 , Figure 14 is Figure 4 a partial structural top view schematic diagram of another embodiment of the display screen 100 shown inFigure 15 Yes Figure 14 It is a partially enlarged structural schematic diagram of the display screen 100 shown in the figure. In the second specific embodiment, the first spacer 60 includes a first spacer segment 61, a second spacer segment 62, and a third spacer segment 63. The second spacer 70 includes a fourth spacer segment 71, a fifth spacer segment 72, and a sixth spacer segment 73. The third spacer 80 includes a seventh spacer segment 81, an eighth spacer segment 82, a ninth spacer segment 83, and a tenth spacer segment 84.

[0093] The difference from the above-mentioned first specific embodiment lies in that the orientation and quantity of the first notch 64 are different, and the first spacer 60 further includes an eleventh spacer segment 65. The eleventh spacer segment 65 is spaced opposite to the fourth side 264 of the first sub-pixel 26. A first notch 64 is formed between the first spacer segment 61 and the eleventh spacer segment 65, and a first notch 64 is also formed between the third spacer segment 63 and the eleventh spacer segment 65. The eleventh spacer segment 65 can reduce the risk of optical crosstalk problems occurring between the first sub-pixel 26 and the adjacent second sub-pixel 27. The orientations of the multiple first notches 64 are all the same. The orientations of the multiple second notches 74 are also the same. However, the orientations of the first notch 64 and the second notch 74 are opposite, where the first notch 64 faces the first direction, and the first direction can specifically be upward, and the second notch 74 faces the second direction, and the second direction can specifically be downward. Thus, the current flows to the first sub-pixel 26 and the second sub-pixel 27 with almost the same probability.

[0094] The second spacer 70 further includes a twelfth spacer segment 75. The twelfth spacer segment 75 is spaced opposite to the fourth side 264 of the second sub-pixel 27. A second notch 74 is formed between the fourth spacer segment 71 and the twelfth spacer segment 75, and a second notch 74 is also formed between the sixth spacer segment 73 and the twelfth spacer segment 75. The twelfth spacer segment 75 can reduce the risk of optical crosstalk problems occurring between the second sub-pixel 27 and the adjacent first sub-pixel 26.

[0095] Moreover, there are two spacer segments, namely the second spacer segment 62 and the fifth spacer segment 72, between the second side 262 of the first sub-pixel 26 and the adjacent second sub-pixel 27, and there are two spacer segments, namely the eleventh spacer segment 65 and the twelfth spacer segment 75, between the fourth side 264 of the first sub-pixel 26 and the adjacent second sub-pixel 27. Furthermore, the risk of optical crosstalk problems occurring between the first sub-pixel 26 and the adjacent second sub-pixel 27 can be further reduced.

[0096] In the second specific embodiment, the multiple spacers 40 are arranged in four rows and five columns, so that the first common portion 310 forms multiple first channel portions 311 and multiple second channel portions 312. The first notch 64 is aligned with the second channel portion 312, and the second notch 74 is aligned with the second channel portion 312.

[0097] Please refer toFigure 16 and Figure 17 , Figure 16 is Figure 4 a partial top - view schematic diagram of another embodiment of the display screen 100 shown in Figure 17 is Figure 16 a partial enlarged structural schematic diagram of the display screen 100 shown in Figure 17 In the third specific embodiment, the difference from the above - mentioned first specific embodiment is that the first notches 64 of some of the first spacers 60 face upward, and the first notches 64 of some other first spacers 60 face downward. Every four of the second sub - pixels 27 are distributed at the four corner positions of a square area, and the orientations of the second notches 74 of the four second spacers 70 are arranged clockwise or counterclockwise. As shown in

[0098] In the third specific embodiment, a plurality of spacers 40 are arranged in four rows and five columns, so that the first common portion 310 forms a plurality of first channel portions 311 and a plurality of second channel portions 312. Some of the first notches 64 and some of the second notches 74 face the first channel portions 311, and some of the first notches 64 and some of the second notches 74 face the second channel portions 312. The first sub - pixels 26 connect to the current paths of the first channel portions 311 and the second channel portions 312 with the same probability, and the second sub - pixels 27 connect to the current paths of the first channel portions 311 and the second channel portions 312 with the same probability, improving the picture brightness uniformity of the display screen 100.

[0099] In other specific embodiments, every four of the first sub - pixels 26 are distributed at the four corner positions of a square area, and the orientations of the first notches 64 of the four first spacers 60 are arranged clockwise or counterclockwise. Some of the second notches 74 of the second spacers 70 face upward, and some of the second notches 74 of the second spacers 70 face downward.

[0100] Please refer to Figure 18 and Figure 19 , Figure 18 is an internal structural schematic diagram of the display screen 100 provided by another embodiment of the present application. Figure 19 is Figure 18Schematic diagram of a partial enlarged structure of the display screen 100 described in [reference]. In other embodiments, a groove 182 is recessed on the surface of the support portion 18, and at least a part of the spacer 40 is disposed in the groove 182. The groove 182 is specifically disposed in the pixel definition layer 11 and penetrates the pixel definition layer 11 along the Z-axis direction. The spacer 40 can be completely located within the groove 182. In this case, it is undoubted that the surface of the spacer 40 must be lower than the surface of the support protrusion 19. The spacer 40 can also be partially located within the groove 182 and the other part extends out of the groove 182, but the surface of the part of the spacer 40 extending out of the groove 182 needs to be lower than the surface of the support protrusion 19.

[0101] Please refer to Figure 20 , Figure 20 is prepared using the masking plate 50 Figure 18 Schematic diagram of the structure of the display screen 100 shown in [reference]. When preparing the light-emitting layer 20 using the evaporation process, when processing the display screen 100, the spacer 40 will be prepared on the support portion 18 first, and then the light-emitting layer 20 will be prepared on the support portion 18. After the spacer 40 is prepared on the support portion 18, the masking plate 50 is used for masking to facilitate the preparation of the sub-pixel 254 of the light-emitting layer 20. When the masking plate 50 performs masking, it will contact the support protrusion 19. In this embodiment, the spacer 40 is disposed in the groove 182 and the spacer 40 is completely located within the groove 182. In other words, the surface of the spacer 40 facing away from the bottom surface of the groove 182 is lower than the opening of the groove 182, so that the surface of the spacer 40 is lower than the surface of the support protrusion 19. When the masking plate 50 contacts the support protrusion 19, there is a gap H between the masking plate 50 and the spacer 40, which can prevent the masking plate 50 from rubbing against the spacer 40, thereby preventing the problem of black spots caused by particles in the sub-pixel 254 and preventing the crosstalk prevention effect of the spacer 40 from being weakened.

[0102] In addition, when the common layer 300 is evaporated onto the support portion 18 using the evaporation process, the spacer region 181 is blocked by the first isolation surface 42. Therefore, the material of the common layer 300 cannot be evaporated onto the spacer region 181, and thus there is a gap between the spacer 40 and the common layer 300. In other words, there is the above-mentioned spacer region 181 between the spacer 40 and the first common portion 310 to prevent the spacer 40 from contacting the common layer 300, and the spacer region 181 can improve the isolation effect.

[0103] In this embodiment, by providing the groove 182 and disposing the spacer 40 in the groove 182, it is possible to not only make the spacer 40 have sufficient thickness to increase the isolation effect of the spacer 40, but also prevent the spacer 40 from being rubbed by the masking plate 50.

[0104] Please refer to Figure 21 , Figure 21FIG. 0 is a partial structural schematic diagram of the display screen 100 provided by another embodiment of the present application. In other embodiments, the surface of the spacer 40 facing away from the bottom surface of the groove 182 may also protrude from the opening of the groove 182 and be lower than the surface of the support protrusion 19, so as to further increase the height of the spacer 40 in the Z-axis direction and enable the spacer 40 to have a better isolation effect.

[0105] Please refer to Figure 22 , Figure 22 FIG. 7 is a partial structural schematic diagram of the display screen 100 provided by still another embodiment of the present application. In other embodiments, the groove 182 is recessed in the surface of the support protrusion 19 and extends to the support portion 18. Then, the spacer 40 is disposed inside the groove 182, and the surface of the spacer 40 facing away from the bottom surface of the groove 182 is lower than the opening of the groove 182, that is, the surface of the spacer 40 facing away from the bottom surface of the groove 182 is lower than the surface of the support protrusion 19. That is, the support protrusion 19 and the spacer 40 can share a support portion 18, so that the support portion 18 is fully utilized. In addition, since the total thickness of the support protrusion 19 and the support portion 18 is relatively thick, the depth of the groove 182 can be set relatively deep. When the spacer 40 is disposed in the groove 182, the height of the spacer 40 in the Z-axis direction can be set relatively high, thereby increasing the isolation effect.

[0106] In this embodiment, the steps of manufacturing the display screen 100 are as follows:

[0107] Step S10: Provide a substrate 13.

[0108] Step S20: Coat a planarization layer 12 on the surface of the substrate 13.

[0109] Step S30: Coat an anode material layer on the surface of the planarization layer 12 facing away from the substrate 13, and then perform exposure and development to make the anode material layer become the anode layer 21. The anode layer 21 includes a plurality of anode blocks 211.

[0110] Step S40: Coat a pixel definition material layer on the surface of the planarization layer 12 facing away from the substrate 13, and then perform exposure and development to make the pixel definition material become the pixel definition layer 11. The pixel definition layer 11 has through holes, a support portion 18, and support protrusions 19, and the through holes and the planarization layer 12 form recesses 17. The plurality of anode blocks 211 are respectively located in the plurality of recesses 17.

[0111] Step S50: Coat a negative photoresist material on the surface of the pixel definition layer 11 facing away from the planarization layer 12, and then perform exposure and development to make the negative photoresist material become the spacer 40. The spacer 40 has a trapezoidal cross section 41, and the upper base of the trapezoidal cross section 41 is connected to the pixel definition layer 11.

[0112] Step S60: Evaporate the hole injection layer 24 onto the pixel definition layer 11. After evaporation, a part of the hole injection layer 24 is located in the plurality of recesses 17 and is stacked on the plurality of anode blocks 211. Another part of the hole injection layer 24 is stacked and fixed on the plurality of support portions 18. When evaporating the hole injection layer 24, the mask device used is square-shaped and is disposed around the outer periphery of the display backplane 10.

[0113] Step S70: Perform masking using the mask plate 50, and evaporate the sub-pixels 254 of the light-emitting layer 20 onto the pixel definition layer 11 using the evaporation process. The mask plate 50 can be a metal fine mask plate 50. The plurality of sub-pixels 254 are respectively located in the plurality of recesses 17, and the plurality of sub-pixels 254 are all stacked on the part of the hole injection layer 24 located in the recesses 17.

[0114] Step S80: Evaporate the electron transport layer 251 and the cathode layer 22 in sequence. After evaporation, a part of the electron transport layer 251 and the cathode layer 22 is located in the plurality of recesses 17 and is stacked on the plurality of sub-pixels 254. Another part of the electron transport layer 251 and the cathode layer 22 is stacked on the part of the hole injection layer 24 located on the support portions 18. When evaporating the electron transport layer 251 and the cathode layer 22, the mask device is square-shaped and is disposed around the outer periphery of the display backplane.

[0115] Step S90: Prepare the encapsulation layer 31 on the cathode layer 22 such that the spacer 40 is completely covered by the encapsulation layer 31. The encapsulation layer 31 includes two layers of silicon nitride layers and one layer of ink layer, and the ink layer is stacked between the two silicon nitride layers. The silicon nitride layer can be prepared by chemical vapor deposition, and the ink layer can be formed by printing.

[0116] Step S100: Bond the polarizing layer 32 to the encapsulation layer 31 using an adhesive.

[0117] Step S110: Bond the cover plate 33 to the polarizing layer using an adhesive.

[0118] In the above step S70, when the mask plate 50 performs masking, the mask plate 50 is in direct contact with the support protrusion 19. In other words, the support protrusion 19 can support the mask plate 50, thereby preventing the mask plate 50 from contacting the surface of the support portion 18 and avoiding large-area damage to the support portion 18 caused by the mask plate 50. In addition, since the surface of the spacer 40 facing away from the support portion 18 is lower than the surface of the support protrusion 19 facing away from the support portion 18. Therefore, when the mask plate 50 performs masking, it will not contact the spacer 40 either, avoiding the mask plate 50 from scraping the spacer 40, reducing the risk of damage to the spacer 40, increasing the structural stability of the spacer 40, and thus enabling the spacer 40 to achieve a good isolation effect and reducing the risk of optical crosstalk problems in the display screen 100.

[0119] In the above steps S60 and S80, when vapor deposition is performed using a vapor deposition process, the first isolation surface 42 of the spacer 40 shields the spacer region 181, so that the materials of the common layers 300 such as the electron transport layer 251 and the cathode layer 22 cannot be vapor deposited onto the spacer region 181. The spacer region 181 prevents the spacer 40 from contacting the common layer 300, thereby preventing the isolation effect of the spacer 40 from weakening.

[0120] The above are only some embodiments and implementation manners of the present application. The protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application, and all should be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A display screen, characterized in that, it includes: a display backplane and a light-emitting layer; a plurality of recesses are recessed on the surface of the display backplane, and there is a support portion between any two adjacent recesses; support protrusions are convexly provided on the surface of some of the support portions; the light-emitting layer includes a common layer and a plurality of sub-pixels; the plurality of sub-pixels are respectively arranged in the plurality of recesses; the common layer includes a first common portion and a second common portion; the first common portion is laminated on the surface of the support portion; the second common portion is laminated on the plurality of sub-pixels; an isolation member is provided around each of at least some of the sub-pixels; the isolation member is arranged on the support portion, the isolation member passes through the first common portion, in the direction from the light-emitting layer to the display backplane, the surface of the isolation member facing away from the support portion is lower than the surface of the support protrusion facing away from the support portion.

2. The display screen according to claim 1, characterized in that, the plurality of isolation members are arranged in an array; the first common portion includes a first channel portion and a second channel portion; the first channel portion is located between adjacent two rows of isolation members, and the second channel portion is located between adjacent two columns of isolation members; current is transmitted to the sub-pixels through the first channel portion and / or the second channel portion.

3. The display screen according to claim 2, characterized in that, the isolation member has a notch, and the first common portion further includes a connecting portion, and the connecting portion is arranged in the notch; the connecting portion is connected between the first channel portion and the second common portion, and / or, the connecting portion is connected between the second channel portion and the second common portion.

4. The display screen according to claim 3, characterized in that, along the direction from the support portion to the recess, the notch faces the first channel portion or the second channel portion.

5. The display screen according to claim 3, characterized in that, the notches of at least some of the isolation members face the same direction.

6. The display screen according to claim 3, characterized in that, the notches of some of the isolation members face a first direction, and the notches of another part of the isolation members face a second direction, and both the first direction and the second direction are perpendicular to the thickness direction of the display screen.

7. The display screen according to claim 3, characterized in that, among the plurality of sub-pixels, four of the sub-pixels are distributed at the four corner positions of a square area, and the notches of the isolation members around the four sub-pixels are arranged in a clockwise or counterclockwise order.

8. The display screen according to any one of claims 1 to 7, characterized in that, a spacer area is provided on the support portion; the spacer area surrounds the isolation member for one week to separate the isolation member from the first common portion.

9. The display screen according to claim 8, characterized in that, along the direction from the light-emitting layer to the display backplane, the width of the isolation member gradually decreases; the isolation member includes a first isolation surface and a second isolation surface, and along the thickness direction of the display screen, the first isolation surface and the second isolation surface are arranged opposite to each other; In the direction from the support portion towards the concave portion, the width of the first isolation surface is smaller than the width of the second isolation surface; In the thickness direction, a part of the first isolation surface faces the second isolation surface, and another part of the first isolation surface faces the spacer region.

10. The display screen according to claim 9, characterized in that the spacer further includes a first side surface and a second side surface, the first side surface and the second side surface are arranged back to back, and the first side surface is connected between one side of the first isolation surface and the second isolation surface, and the second side surface is connected between the other side of the first isolation surface and the second isolation surface; the included angle between the first side surface and the reference surface is greater than or equal to 40 degrees and less than or equal to 80 degrees, and the reference surface is parallel to the surface of the support portion.

11. The display screen according to any one of claims 1 to 7, characterized in that the spacer protrudes from the surface of the support portion.

12. The display screen according to any one of claims 1 to 7, characterized in that a groove is recessed in the surface of the support portion, and at least part of the spacer is disposed in the groove.

13. The display screen according to claim 12, characterized in that when the spacer is disposed in the groove, in the direction from the light-emitting layer towards the display backplane, the surface of the spacer facing away from the groove is lower than the surface of the support portion.

14. The display screen according to claim 12, characterized in that the groove is recessed in the surface of the support protrusion and extends to the support portion.

15. The display screen according to any one of claims 1 to 7, characterized in that the display backplane includes a pixel definition layer, a planarization layer and a substrate; in the thickness direction, the pixel definition layer, the planarization layer and the substrate are sequentially stacked and fixed; the pixel definition layer and the planarization layer enclose the concave portion.

16. The display screen according to any one of claims 1 to 7, characterized in that the display screen further includes a packaging device, the packaging device includes a packaging layer, a polarizing layer and a cover plate; in the thickness direction, the packaging layer, the polarizing layer and the cover plate are sequentially stacked and fixed; one side of the packaging layer facing away from the polarizing layer covers and is connected to the common layer.

17. An electronic device, characterized in that it includes a housing and the display screen according to any one of claims 1 to 16, and the display screen is installed in the housing.

Images