Display screen and electronic device

Abstract

The present application provides a display screen and an electronic device. The display screen comprises a display backplane and a light-emitting layer; a plurality of recesses are formed on the surface of the display backplane, and a supporting portion is provided between any two adjacent recesses; supporting protrusions are provided on the surfaces of some of the supporting portions; 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 recesses; the common layer comprises a first common portion and a second common portion; the first common portion is stacked on the surfaces of the supporting portions; the second common portion is stacked on the plurality of sub-pixels; isolation members are arranged around each sub-pixel among at least some sub-pixels; the isolation members are arranged on the supporting portions and pass through the first common portion, and the surfaces of the isolation members facing away from the supporting portions are lower than the surfaces of the supporting protrusions facing away from the supporting portions. By providing the isolation members, the transmission of a current to adjacent sub-pixels that do not need to emit light is blocked by the isolation members, reducing the risk of optical crosstalk problems, improving the sharpness of pictures displayed on the display screen.

Description

Displays and electronic devices

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on December 6, 2023, with application number 202311670680.3 and application name “Display Screen and Electronic Device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of display technology, and in particular to a display screen and an electronic device. Background Art

[0003] Organic light-emitting diode (OLED) displays have excellent color saturation, contrast, and response speed, making them widely used in various industries. In particular, a large number of electronic devices, including mobile phones, use OLED displays as their display screens.

[0004] However, optical crosstalk is a common problem in current OLED displays.

[0005] Summary of the Invention

[0006] The present application provides a display screen and an electronic device, which reduce the risk of optical crosstalk problems.

[0007] In a first aspect, the present application provides a display screen, comprising: a display backplane and a light-emitting layer; a plurality of recesses are provided on the surface of the display backplane, and a support portion is provided between any two adjacent recesses; support protrusions are provided on the surfaces of some of the support portions; 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 recesses; the common layer comprises a first common portion and a second common portion; the first common portion is stacked on the surface of the support portion; the second common portion is stacked 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 provided on the support portion, the isolation member passes through the first common portion, and points from the light-emitting layer to the display backplane, and 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.

[0008] Typically, the multiple sub-pixels of a display screen 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 of 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.

[0009] In the related art, no isolation member is provided, so optical crosstalk is prone to occur when the display screen emits light. For example, when displaying a certain image, only the first sub-pixel needs to emit light. However, when the common layer transmits current to the first sub-pixel, the current is also transmitted through the common layer to the second sub-pixel, causing the second sub-pixel to emit light, thereby preventing the optical 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. The light emitted by the second sub-pixel will cause the clarity of the displayed image to deteriorate.

[0010] In this embodiment, an isolation member is provided so that the common layer between two adjacent sub-pixels is at least partially in a disconnected state. Therefore, when current is transmitted to the sub-pixel that needs to emit light, the isolation member 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 image displayed on the display screen.

[0011] In addition, in this embodiment, the sub-pixels of the light-emitting layer are prepared in the concave portion of the display backplane using an evaporation process. When processing the display screen, the isolating member is first prepared on the supporting portion, and then the sub-pixels of the light-emitting layer are prepared on the supporting portion. After the isolating member is prepared on the supporting portion, a curing plate is used for curing to facilitate the preparation of the sub-pixels of the light-emitting layer. When the curing plate is curing, it will contact the supporting protrusions. In this embodiment, the surface of the isolating member is set to be lower than the surface of the supporting protrusion. When the curing plate contacts the supporting protrusion, there is a gap H between the curing plate and the isolating member, which can prevent the curing plate from scratching the isolating member, thereby preventing the sub-pixels from having particals and causing black spots, and preventing the anti-crosstalk effect of the isolating member from being weakened.

[0012] In some embodiments, multiple 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 two adjacent rows of isolation members, and the second channel portion is located between two adjacent columns of isolation members; current is transmitted to the sub-pixel through the first channel portion and / or the second channel portion.

[0013] In some embodiments, the spacer has a notch, and the first common portion further includes a connecting portion disposed in the notch; the connecting portion connects between the first channel portion and the second common portion, and / or the connecting portion connects between the second channel portion and the second common portion. The first channel portion and the second channel portion have no bends, which shortens the current transmission path, reduces current loss, and rapidly transmits current to the sub-pixels, ensuring smooth current transmission, improving cathode voltage drop, and enhancing brightness uniformity between the center and edges of the display.

[0014] In some embodiments, along the direction from the support portion to the recessed portion, toward the first channel portion or the second channel portion, current can be quickly transmitted to the sub-pixel, ensuring smooth current transmission.

[0015] In some embodiments, the notches of at least some of the spacers are oriented in the same direction, thereby facilitating the processing of the display screen.

[0016] In some embodiments, the gaps in some isolating members face a first direction, while the gaps in other isolating members face a second direction, and both the first and second directions are perpendicular to the thickness direction, thereby allowing current to flow to each sub-pixel with almost equal probability.

[0017] In some embodiments, four of the multiple sub-pixels are located at the four corners of a square area, and the notches of the spacers surrounding the four sub-pixels are arranged in a clockwise or counterclockwise direction. This allows the sub-pixels to have equal probability of current flow through the first and second channel portions, thereby improving brightness uniformity on the display screen.

[0018] In some embodiments, the support portion is provided with a spacer region that surrounds the isolating member to separate the isolating member from the first common portion. The spacer region serves as a physical isolation function, thereby enhancing the isolation effect.

[0019] In some embodiments, the width of the isolation member gradually decreases along the direction from the light-emitting layer to the display backplane; the isolation member includes a first isolation surface and a second isolation surface, and the first isolation surface and the second isolation surface are arranged opposite to each other along the thickness direction of the display screen; the width of the first isolation surface is smaller than the width of the second isolation surface along the direction from the support portion to the recess; along the thickness direction, a portion of the first isolation surface is opposite to the second isolation surface, and another portion of the first isolation surface is opposite to the spacing area.

[0020] The common layer of the display layer is also produced using an evaporation process. The coating device used for evaporating the common layer is different from the coating plate used for evaporating the sub-pixels. When the common layer is evaporated onto the support portion using the evaporation process, the raw material for making the common layer splashes along the Z-axis from the side of the coating device facing away from the display backplane to the coating device, and then splashes from the coating device to the support portion. Because the spacer is blocked by the first isolation surface, the raw material for making the common layer cannot be evaporated onto the spacer. As a result, the aforementioned spacer is created between the isolation member and the first common portion, preventing the isolation member and the common layer from contacting each other. The spacer enhances the isolation effect and improves the anti-crosstalk effect.

[0021] In some embodiments, the isolation member further includes a first side surface and a second side surface, the first side surface and the second side surface being disposed opposite each other, the first side surface being connected between one side of the first isolation surface and the second isolation surface, and the second side surface being connected between the other side of the first isolation surface and the second isolation surface; the angle between the first side surface and a reference surface being greater than or equal to 40 degrees and less than or equal to 80 degrees, and the reference surface being parallel to the surface of the support portion. During the evaporation process, since some raw materials may tilt in the Z-axis direction, the first angle being greater than or equal to 40 degrees and less than or equal to 80 degrees, and the second angle being greater than or equal to 40 degrees and less than or equal to 80 degrees, are set so that the isolation zone is adequately shielded to prevent tilting raw materials from splashing into the isolation zone.

[0022] In some embodiments, the isolation member is protruded from the surface of the support portion. This design facilitates processing.

[0023] In some embodiments, a groove is formed on the surface of the support portion, and at least a portion of the spacer is disposed within the groove. By providing the groove and disposing the spacer within the groove, the spacer can be made sufficiently thick to enhance its isolation effect while also preventing the spacer from being scratched by the pickling plate.

[0024] In some embodiments, a spacer is disposed within the groove, pointing from the light-emitting layer toward 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 positioned completely within the groove. In other words, the surface of the spacer facing away from the bottom of the groove is lower than the opening of the groove, resulting in the spacer surface being lower than the surface of the supporting protrusion. When the pre-coated film contacts the supporting protrusion, a gap H is created between the pre-coated film and the spacer. This prevents the pre-coated film from scratching the spacer, thereby preventing sub-pixel partials and resulting in dark spots, and also reduces the spacer's anti-crosstalk effect. In this solution, the spacer can be thicker along the Z-axis, thereby achieving better isolation.

[0025] In some embodiments, the groove is recessed in the surface of the supporting protrusion and extends to the supporting portion. The isolator is arranged inside the groove, and the surface of the isolator facing away from the bottom surface of the groove is lower than the opening of the groove, that is, the surface of the isolator facing away from the bottom surface of the groove is lower than the surface of the supporting protrusion. In other words, the supporting protrusion and the isolator can reuse one supporting portion, so that the supporting portion is fully utilized. In addition, because the total thickness of the supporting protrusion and the supporting portion is relatively thick, the depth of the groove can be set deeper. When the isolator is arranged in the groove, the height of the isolator can be set thicker, thereby increasing the isolation effect.

[0026] In some embodiments, the display backplane includes a pixel definition layer, a planar layer, and a substrate; the pixel definition layer, the planar layer, and the substrate are stacked and fixed in sequence along the thickness direction; the pixel definition layer and the planar layer enclose a recess.

[0027] In some embodiments, the display screen further includes a packaging device, which includes a packaging layer, a polarizing layer, and a cover plate; along the thickness direction, the packaging layer, the polarizing layer, and the cover plate are stacked and fixed in sequence; the side of the packaging layer facing away from the polarizing layer covers and is connected to the common layer.

[0028] A second aspect of the present application provides an electronic device, comprising a housing and a display screen according to any one of the first aspects of the present application, wherein the display screen is mounted on the housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0030] FIG1 is a schematic structural diagram of a mobile phone provided in an embodiment of the present application.

[0031] FIG2 is a schematic diagram of the split structure of the mobile phone shown in FIG1 .

[0032] FIG3 is a schematic diagram of the internal structure of the display screen of the mobile phone shown in FIG2 .

[0033] FIG. 4 is another schematic diagram of the internal structure of the display screen of the mobile phone shown in FIG. 2 .

[0034] FIG. 5 is a schematic diagram of the internal structure of the light-emitting layer of the display screen shown in FIG. 4 .

[0035] FIG. 6 is a schematic diagram of the internal structure of another embodiment of the light-emitting layer of the display screen shown in FIG. 4 .

[0036] FIG. 7 is an equivalent circuit diagram of the light emitting layer shown in FIG. 6 .

[0037] FIG8 is a schematic diagram of the internal structure of the display back panel of the display screen shown in FIG4 .

[0038] FIG9 is an enlarged structural schematic diagram of the isolation member shown in FIG8 .

[0039] FIG10 is a partially enlarged schematic diagram of the internal structure of the display screen shown in FIG4 .

[0040] FIG. 11 is a schematic diagram showing the structure of the display screen shown in FIG. 4 prepared using a pickling film plate.

[0041] FIG12 is a schematic top view of a partial structure of the display screen shown in FIG4 .

[0042] FIG13 is a schematic diagram of a partially enlarged structure of the display screen shown in FIG12.

[0043] FIG14 is a schematic top view of a partial structure of another embodiment of the display screen shown in FIG4 .

[0044] FIG15 is a schematic diagram of a partially enlarged structure of the display screen shown in FIG14 .

[0045] FIG16 is a schematic top view of a partial structure of another embodiment of the display screen shown in FIG4 .

[0046] FIG17 is a schematic diagram of a partially enlarged structure of the display screen shown in FIG16 .

[0047] FIG18 is a schematic diagram of the internal structure of a display screen provided in another embodiment of the present application.

[0048] FIG19 is a schematic diagram of a partially enlarged structure of the display screen shown in FIG18 .

[0049] FIG. 20 is a schematic diagram showing the structure of the display screen shown in FIG. 18 prepared using a pickling film plate.

[0050] FIG21 is a schematic diagram of a partial structure of a display screen provided in yet another embodiment of the present application.

[0051] FIG22 is a schematic diagram of the partial structure of a display screen provided in yet another embodiment of the present application. DETAILED DESCRIPTION

[0052] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application.

[0053] The present application provides an electronic device, including but not limited to a cell phone, a notebook computer, a tablet personal computer, a personal digital assistant, a wearable device, or a mobile device, wherein the wearable device may specifically be a wearable watch, a wearable bracelet, etc. The cell phone may be a candy-bar phone or a foldable phone.

[0054] In this embodiment, the electronic device is a bar-type mobile phone. Please refer to Figures 1 and 2. Figure 1 is a schematic diagram of the structure of the mobile phone 1000 provided in the embodiment of the present application. Figure 2 is a schematic diagram of the separate structure of the mobile phone 1000 shown in Figure 1.

[0055] For ease of description, the width of the mobile phone 1000 is defined as the X-axis, the length of the mobile phone 1000 is defined as the Y-axis, and the thickness of the mobile phone 1000 is defined as the Z-axis. The X-axis, Y-axis, and Z-axis directions are perpendicular to each other.

[0056] In this embodiment, the mobile phone 1000 includes a main body 200 and a display screen 100 .

[0057] In this embodiment, the main body 200 includes a housing 210, a circuit board 220, and a battery 230. The circuit board 220 and battery 230 are both mounted within the housing 210. The housing 210 includes a middle frame 240 and a back cover 250. The middle frame 240 includes a center plate and a frame. The frame surrounds and is connected to the center plate. The center plate and the frame enclose a housing cavity for mounting components such as the circuit board 220 and battery 230. The back cover 250 is fixed to one side of the frame along the Z-axis and seals the housing cavity.

[0058] The circuit board 220 integrates multiple chips, including a power management chip. The power management chip is electrically connected to the battery 230 and the display 100. The display 100 is mounted on the side of the middle frame 240 facing away from the back cover 250. The battery 230 can power the display 100 and other components through the power management chip.

[0059] The display 100 may be an organic light-emitting diode (OLED) display. It may have touch functionality and is used to operate the mobile phone 1000 and display information such as images and videos. The display 100 includes a display surface and a mounting surface. The display 100 is mounted on the main body 200, with the mounting surface facing the main body 200 and the display surface facing away from the main body 200.

[0060] Please refer to Figure 3, which is a schematic diagram of the internal structure of the display screen 100 of the mobile phone 1000 shown in Figure 2. In this embodiment, the display screen 100 includes a display backplane 10, a light-emitting layer 20, an encapsulation device 30, and a spacer 40. The display backplane 10, light-emitting layer 20, and encapsulation device 30 are stacked along the Z-axis. The spacer 40 passes through the light-emitting layer 20 to prevent optical crosstalk.

[0061] Please refer to Figure 4, which is another schematic diagram of the internal structure of the display screen 100 of the mobile phone 1000 shown in Figure 2. In this embodiment, the packaging device 30 includes a packaging layer 31, a polarizing layer 32 and a cover plate 33. The display backplane 10 includes a pixel definition layer 11, a flat layer 12 and a substrate 13. Along the Z-axis direction, the cover plate 33, the polarizing layer 32, the packaging layer 31, the light-emitting layer 20, the pixel definition layer 11, the flat layer 12 and the substrate 13 are stacked and fixed in sequence. In other embodiments, the display screen 100 may also include structures such as a protective layer, which is not limited in this application. In other embodiments, the packaging device 30 and the display backplane 10 may also be set to other layer structures, which is not limited in this application. The isolation member 40 is embedded in the packaging layer 31.

[0062] Please refer to Figure 5, which is a schematic diagram of the internal structure of the light-emitting layer 20 of the display screen 100 shown in Figure 4. 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, the anode layer 21, the light-emitting functional layer 23, and the cathode layer 22 are stacked in sequence. 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, which are stacked and fixed in sequence along the Z-axis. The pixel layer 252 includes a plurality of sub-pixels 254, which are arranged in an array. Every group of three sub-pixels 254 constitutes 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, wherein the first sub-pixel 26, the second sub-pixel 27, and the third sub-pixel 28 can be a red pixel, a green pixel, and a blue pixel, respectively. The arrangement of the first sub-pixel 26, the second sub-pixel 27, and the third sub-pixel 28 is merely exemplary, e.g., a plurality of pixel units are arranged in an array; in practice, the first sub-pixel 26, the second sub-pixel 27, and the third sub-pixel 28 may also be arranged in other layouts, and the layout shown in the figure does not constitute a limitation of the present application. The anode layer 21 includes a plurality of independent anode blocks 211, and the number of anode blocks 211 is consistent with the number of sub-pixels 254. Furthermore, the plurality of sub-pixels 254 and the plurality of anode blocks 211 correspond one-to-one along the Z-axis direction. In other words, the orthographic projections of the plurality of anode blocks 211 on the cathode layer 22 correspond one-to-one to the orthographic projections of the plurality of sub-pixels 254 on the cathode layer 22.

[0063] In this embodiment, the light-emitting layer 20 includes a functional layer 25. Along the Z-axis, the cathode layer 22, the functional layer 25, the hole injection layer 24, and the anode layer 21 are stacked in sequence. 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.

[0064] In this embodiment, the common layer 300 includes a first common portion 310 and a second common portion 320. The second common portion 320 is stacked on the plurality of sub-pixels 254, and the first common portion 310 is used to connect to the second common portion 320. When the battery 230 supplies power to the display screen 100 via the power management chip, current is transmitted from the periphery of the display screen 100 to the center through the first common portion 310, and then from the first common portion 310 to the second common portion 320. The second common portion 320 then transmits the current to the pixel layer 252, causing the sub-pixels 254 in the pixel layer 252 to emit light.

[0065] Please refer to Figure 6, which is a schematic diagram of the internal structure of another embodiment of the light-emitting layer 20 of the display screen 100 shown in Figure 4. In other embodiments, the light-emitting layer 20 may include two functional layers 25, and the two functional layers 25 are connected by a charge generation layer 29. That is, the light-emitting layer 20 includes an anode layer 21, a cathode layer 22, a hole injection layer 24, two functional layers 25 and a charge generation layer 29. Along the Z-axis direction, the cathode layer 22, the functional layer 25, the charge generation layer 29, the functional layer 25, the hole transport layer 253 and the anode layer 21 are stacked and fixed in sequence. Among them, 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 are all common layers 300. Please refer to Figure 7, which is an equivalent circuit diagram of the light-emitting layer 20 shown in Figure 6. It can be seen from the equivalent circuit of the light-emitting layer 20 that current can be transmitted from the anode layer 21 to one of the functional layers 25, then from one of the functional layers 25 to the charge generation layer 29, then from the charge generation layer 29 to another functional layer 25, and then to the cathode layer 22.

[0066] Please refer to Figure 8, which is a schematic diagram of the internal structure of the display backplane 10 of the display screen 100 shown in Figure 4. The display backplane 10 includes a first surface 15 and a second surface 16. Along the Z-axis direction, the first surface 15 and the second surface 16 are opposite to each other. The first surface 15 of the display backplane 10 is concavely provided with a plurality of recesses 17, and a support portion 18 is formed between each adjacent recess 17. Specifically, the display backplane 10 includes a pixel definition layer 11, a planar layer 12, and a substrate 13. 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 all penetrate the pixel definition layer 11. Along the Z-axis direction, the pixel definition layer 11, the planar layer 12, and the substrate 13 are stacked and fixed in sequence. The surface of the pixel definition layer 11 facing away from the planar layer 12 is the first surface 15, and the surface of the substrate 13 facing away from the first surface 15 of the planar layer 12 is the second surface 16. The planar layer 12 and the pixel definition layer 11 form a plurality of recesses 17. The wall surface of the through hole serves as the groove side surface of the recess 17 , and the surface of the flat layer 12 covering the through hole serves as the groove bottom surface of the recess 17 .

[0067] In this embodiment, a portion of the support portion 18 is provided with a support protrusion 19 on its surface, while another portion of the support portion 18 is provided with an isolation member 40. The isolation member 40 may be made of an insulating material such as a negative photoresist. The surface of the support portion 18 is the aforementioned first surface 15. In this embodiment, the light-emitting layer 20 is deposited layer by layer on the display backplane 10 through an evaporation process. When the sub-pixels 254 are deposited into the recessed portion 17 of the display backplane 10, the evaporation process requires the use of a coating plate 50 (shown in FIG. 11 ). The support protrusion 19 is used to support the coating plate 50 to reduce the contact area between the coating plate 50 and the support portion 18, thereby preventing the coating plate 50 from causing large-scale 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 optical crosstalk.

[0068] In this embodiment, along the Z-axis direction, specifically in the direction from the light-emitting layer 20 toward the display backplane 10, from top to bottom in FIG8 , 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. The thickness difference between the surface of the spacer 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 microns and 1 micron. The height of the spacer 40 along the Z-axis direction is between 0.5 microns and 2 microns, and specifically can be 0.5 microns, 0.8 microns, 1 micron, 1.5 microns, 1.8 microns, or 2 microns.

[0069] Please refer to Figure 9, which is an enlarged schematic diagram of the isolation member 40 shown in Figure 8. In this embodiment, the isolation member 40 is protruding from the surface of the support portion 18. The width of the isolation member 40 gradually decreases along the direction from the light-emitting layer 20 to the display backplane 10. The isolation member 40 includes a first isolation surface 42 and a second isolation surface 43. The first isolation surface 42 and the second isolation surface 43 are arranged opposite to each other along the thickness direction of the display screen 100. The width of the first isolation surface 42 is smaller than the width of the second isolation surface 43 along the direction from the support portion 18 to the recess 17.

[0070] Isolator 40 also includes a first side surface 44 and a second side surface 45. First side surface 44 and second side surface 45 are disposed opposite each other. First side surface 44 connects between one side of first isolation surface 42 and second isolation surface 43, while second side surface 45 connects between the other sides of first isolation surface 42 and second isolation surface 43. Both first side surface 44 and second side surface 45 are inclined surfaces. A first angle a between first side surface 44 and reference plane L is greater than or equal to 40 degrees and less than or equal to 80 degrees. Specifically, first angle a can be 40 degrees, 50 degrees, 60 degrees, 70 degrees, 80 degrees, or 90 degrees. A second angle b between second side surface 45 and reference plane L is greater than or equal to 40 degrees and less than or equal to 80 degrees. Specifically, second angle b can be 40 degrees, 45 degrees, 55 degrees, 65 degrees, 75 degrees, 85 degrees, or 90 degrees. Reference plane L is parallel to first surface 15 of display backplane 10, which can also be understood as reference plane L being parallel to the surface of support portion 18. Specifically, the isolation member 40 has a trapezoidal cross-section 41, with the lower base of the trapezoidal cross-section 41 located on the first isolation surface 42, and the upper base of the trapezoidal cross-section 41 located on the second isolation surface 43. The two waists of the trapezoidal cross-section 41 are located on the first side surface 44 and the second side surface 45, respectively. Thus, along the Z-axis, a portion of the first isolation surface 42 faces the second isolation surface 43, and another portion of the first isolation surface 42 faces a portion of the surface of the support portion 18. The portion of the surface facing the support portion 18 and the first isolation surface 42 is referred to as the spacing region 181. In other words, along the Z-axis, the orthographic projection of the first isolation surface 42 on the surface of the support portion 18 covers the spacing region 181. The spacing region 181 is used to prevent contact between the isolation member 40 and the common layer of the light-emitting layer 20, thereby preventing the isolation effect of the isolation member 40 from being weakened.

[0071] In other embodiments, the isolation member 40 is made of insulating material, so the common layer 300 may also be in contact with the first side surface and / or the second side surface 45 of the isolation member 40 .

[0072] Please refer to Figure 10, which is a partially enlarged structural diagram of the internal structure of the display screen 100 shown in Figure 4. In this embodiment, when the light-emitting layer 20 is stacked on the display backplane 10, the first common portion 310 is stacked on the surface of the support portion 18, and the multiple sub-pixels 254 are respectively located in the multiple recesses 17. The second common portion 320 is stacked on the multiple sub-pixels 254 and is located in the multiple recesses 17. The isolation member 40 passes through the common layer 300, specifically, the isolation member 40 passes through the first common portion 310, and the isolation member 40 and the first common portion 310 are separated by the spacer 181. In addition, the surface of the isolation member 40 is lower than the surface of the supporting protrusion 19. Specifically, when the light-emitting layer 20 includes a functional layer 25, the isolation member 40 passes through 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 extends through 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. Because the thickness of the light-emitting layer 20 is on the micrometer level, the spacer 40 extends through the entire common layer 300 to facilitate processing.

[0073] An isolation member 40 is provided around at least some of the sub-pixels 254. It can also be understood that there are multiple isolation members 40, and the multiple isolation members 40 are provided around the multiple sub-pixels 254 in a one-to-one correspondence. In other words, because the support portion 18 is located between two adjacent recesses 17, and the sub-pixel 254 is provided in the recess 17, when the isolation member 40 is provided on the support portion 18, it also means that the isolation member 40 is located around the sub-pixel 254. In one specific embodiment, isolation members 40 are provided around all sub-pixels 254. In another embodiment, isolation members 40 are provided around all first sub-pixels 26 and all second sub-pixels 27, and no isolation member 40 is provided around the third sub-pixel 28. In yet another specific embodiment, isolation members 40 are provided around some of the first sub-pixels 26, some of the second sub-pixels 27, and some of the third sub-pixels 28.

[0074] In the related art, the isolation member 40 is not provided, so the display screen 100 is prone to optical crosstalk when emitting light. For example, when displaying a certain image, 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 is also transmitted through the common layer 300 to the second sub-pixel 27, causing the second sub-pixel 27 to emit light, thereby preventing the optical crosstalk problem caused by lateral 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. The light emitted by the second sub-pixel 27 will cause the clarity of the displayed image to deteriorate.

[0075] 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-pixels 254 from emitting light, reducing the risk of light crosstalk problems, and improving the clarity of the image displayed on the display screen 100.

[0076] Please refer to Figure 11, which is a schematic diagram of the structure of the display screen 100 shown in Figure 4, using a pre-coating plate 50. When the light-emitting layer 20 is formed using an evaporation process, the spacer 40 is first formed on the support portion 18 during the processing of the display screen 100. After the spacer 40 is formed on the support portion 18, the pre-coating plate 50 is used for pre-coating to facilitate the evaporation deposition of the sub-pixels 254 of the light-emitting layer 20 into the recesses 17. During the pre-coating process, the pre-coating plate 50 contacts the support protrusions 19. In this embodiment, the surface of the spacer 40 is lower than the surface of the support protrusions 19. When the pre-coating plate 50 contacts the support protrusions 19, a gap H is formed between the pre-coating plate 50 and the spacer 40. This prevents the pre-coating plate 50 from scratching the spacer 40, thereby preventing the sub-pixels 254 from having partial spots, which could lead to black spots, and also prevents the spacer 40 from weakening its anti-crosstalk effect.

[0077] The common layer 300 is also formed via an evaporation process. A pre-coated device is used to prepare the common layer 300. This pre-coated device is a rectangular frame and surrounds the outer periphery of the display backplane, allowing the common layer 300 to cover the entire display backplane. When the common layer 300 is deposited onto the support portion 18 using the evaporation process, the raw material for making the common layer 300 splashes along the Z-axis from the side of the pre-coated device facing away from the display backplane 10 onto the pre-coated device, and then from the pre-coated device toward the recess 17. Because the spacer 181 is blocked by the first isolation surface 42, the raw material for making the common layer 300 cannot be evaporated onto the spacer 181. This creates the spacer 181 between the spacer 40 and the first common portion 310, preventing contact between the spacer 40 and the common layer 300. The spacer 181 enhances isolation and further improves crosstalk prevention.

[0078] During the evaporation process, since some raw materials may tilt 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 tilting raw materials from splashing into the spacing area 181.

[0079] Please refer to Figure 12, which is a schematic top view of the partial structure of the display screen 100 shown in Figure 4. In this embodiment, a plurality of 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 to the right 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 in the positive direction, and the third sub-pixel 28 is a rectangle. Along the X-axis direction, a portion of the third sub-pixel 28 is arranged at intervals with the first sub-pixel 26, and another portion 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 plurality of recesses 17 needs to be determined based on the arrangement of the plurality of sub-pixels. Specifically, the arrangement of the plurality of recesses 17 is the same as the arrangement of the plurality of sub-pixels 254. The arrangement of the first sub-pixel 26, the second sub-pixel 27 and the third sub-pixel 28 is merely exemplary. In fact, the first sub-pixel 26, the second sub-pixel 27 and the third sub-pixel 28 may also be arranged in other ways. The layout shown in FIG. 12 does not constitute a limitation to the present application.

[0080] 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 a blue pixel is shorter than that of a red pixel and a green pixel. Setting the volume of the blue pixel larger than that of the red pixel and the green pixel reduces the current density of the blue pixel, thereby increasing the lifespan of the blue pixel. This ensures that the lifespans of the blue, red, and green pixels are substantially the same, thereby increasing the luminous consistency of the display screen 100 and extending the service life of the display screen 100.

[0081] Multiple isolation members 40 are respectively located around multiple sub-pixels 254, and multiple pixel units are arranged in an array. The three sub-pixels 254 in each pixel unit are arranged in the same manner, so that the multiple isolation members 40 around the sub-pixels 254 can be arranged in an array. The isolation members 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 two adjacent rows of isolation members 40, and the second channel portion 312 is located between two adjacent columns of isolation members 40. Current is transmitted to the sub-pixels 254 through the first channel portion 311 and / or the second channel portion 312. Neither the first channel portion 311 nor the second channel portion 312 has any bends, which can shorten the current transmission path, reduce current loss, and quickly transmit current to the sub-pixels 254, ensuring smooth current transmission, improving cathode voltage drop, and improving brightness uniformity at the center and edges of the display screen 100. In addition, the first channel portion 311 and the second channel portion 312 are distributed at an angle of 90 degrees, and the first channel portion 311 and the second channel portion intersect with each other, so that the current transmission is faster and more uniform.

[0082] After the isolating members 40 are arranged in an array, each isolating member 40 in the array has a gap. The first common portion 310 also includes a connecting portion 330, and the connecting portion 330 is arranged in the gap. 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. The direction is toward the first channel portion 311 or the second channel portion 312. Because the isolating member 40 runs through the entire common layer 300, that is, the isolating member 40 separates the cathode layer 22, at this time, by setting the gap so that part of the cathode layer 22 is in a continuous state, current can be transmitted between the first common portion 310 and the second common portion 320. In this way, the risk of optical crosstalk problems can be reduced and current transmission can be prevented from being blocked.

[0083] Please refer to Figures 12 and 13. Figure 13 is a partially enlarged schematic diagram of the structure of the display screen 100 described in Figure 12. 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 has a first notch 64. The second spacer 70 is disposed around the second sub-pixel 27 and has a second notch 74. The third spacer 80 is disposed around the third sub-pixel 28 and has a third notch 85.

[0084] The corresponding relationship between the sub-pixel 254 and the surrounding isolation member 40 is described in detail below.

[0085] Referring to Figures 12 and 13 , in a first 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 isolating member 60 is generally U-shaped and includes a first isolating segment 61, a second isolating segment 62, and a third isolating segment 63, which are sequentially connected. The isolating member 40 is provided with a first notch 64, which is opposed to the third isolating segment 63. In a direction perpendicular to the Z-axis, the first isolating segment 61 is spaced apart from the first side 261, the second isolating segment 62 is spaced apart from the second side 262, the third isolating segment 63 is spaced apart from the third side 263, and the first notch 64 is opposed to the fourth side 264. The first notches 64 of all first isolating members 60 are oriented in the same direction.

[0086] The first isolation segment 61 and the third isolation segment 63 reduce the risk of optical crosstalk between the first sub-pixel 26 and the adjacent third sub-pixel 28. The second isolation segment 62 reduces the risk of optical crosstalk between the first sub-pixel 26 and the adjacent second sub-pixel 27. The first gap 64 allows current to be smoothly transmitted to the first sub-pixel 26.

[0087] The second spacer 70 surrounding the second sub-pixel 27 has the same shape as the first spacer 60. The second spacer 70 includes a fourth isolation segment 71, a fifth isolation segment 72, and a sixth isolation segment 73. The second spacer 70 is provided with a second notch 74. The positional correspondence between the second spacer 70 and the second sub-pixel 27 is similar to the positional correspondence between the first spacer 60 and the first sub-pixel 26. The second notches 74 of all second spacers 70 are oriented in the same direction.

[0088] The fourth isolation segment 71 and the sixth isolation segment 73 can reduce the risk of optical crosstalk between the second sub-pixel 27 and the adjacent third sub-pixel 28. The fifth isolation segment 72 can reduce the risk of optical crosstalk between the second sub-pixel 27 and the adjacent first sub-pixel 26. The second gap 74 can facilitate current transmission to the second sub-pixel 27.

[0089] 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 isolating member 80 includes a seventh isolating segment 81, an eighth isolating segment 82, a ninth isolating segment 83, and a tenth isolating segment 84. Third notches 85 are provided between the seventh isolating segment 81 and the eighth isolating segment 82, between the ninth isolating segment 83 and the tenth isolating segment 84, between the seventh isolating segment 81 and the ninth isolating segment 83, and between the eighth isolating segment 82 and the tenth isolating segment 84. The seventh and eighth isolating segments are spaced opposite to the first long side 281, and the ninth and tenth isolating segments are spaced opposite to the second long side 282. The four 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.

[0090] The seventh isolation segment 81 and the ninth isolation segment 83 can reduce the risk of optical crosstalk between the third sub-pixel 28 and the adjacent first sub-pixel 26. The eighth isolation segment 82 and the ninth isolation segment 83 can reduce the risk of optical crosstalk between the third sub-pixel 28 and the adjacent second sub-pixel 27. The third notch 85 allows for smooth current transmission to the third sub-pixel 28.

[0091] The plurality of spacers 40 are arranged in four rows and five columns. In the array formation, the first and third rows are composed of the following: the first spacer 60, the seventh spacer segment 81 of the third spacer 80, and the ninth spacer segment 83 of the third spacer 80. The second and fourth rows are composed of the following: the second spacer 70, the eighth spacer segment 82 of the third spacer 80, and the tenth spacer segment 84 of the third spacer 80. The first and fourth columns are composed of the following: the first spacer 60, the second spacer 70, the first spacer 60, and the second spacer 70. The second and fifth columns are composed of the following: the seventh spacer segment 81 of the third spacer 80, the eighth spacer segment 82 of the third spacer 80, the seventh spacer segment 81 of the third spacer 80, and the eighth spacer segment 82 of the third spacer 80. The third and sixth columns are composed of the following: the ninth spacer segment 83 of the third spacer 80, the tenth spacer segment 84 of the third spacer 80, the ninth spacer segment 83 of the third spacer 80, and the tenth spacer segment 84 of the third spacer 80.

[0092] In the first 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, and the second channel portion 312 extends along the Y-axis direction. The first channel portion 311 transmits current from the left edge of the display screen 100 to the sub-pixel 254, and the second channel portion 312 transmits current from the top edge of the display screen 100 to the sub-pixel 254.

[0093] In the first embodiment, connecting portions 330 are provided at the first, second, and third notches 64, 74, and 85. The connecting portions 330 at the first and second notches 64, 74 are connected between the first channel portion 311 and the second common portion 320. The connecting portion 330 at the third notch 85 forms a portion of the second channel portion 312 and is connected to the first channel portion 311. The first and second notches 64, 74 face the first channel portion 311, allowing current to be rapidly transferred from the first channel portion 311 to the first and second sub-pixels 26, 27. Furthermore, because the first, second, and common portions 311, 312, and connecting portions 330 are integrally connected, the second channel portion 312 can also transfer current to the first and second sub-pixels 26, 27. The third notch 85 faces the second channel portion 312, and the first channel portion 311 directly passes through the third notch 85. Therefore, current can be rapidly transferred from the first and second channel portions 311, 312 to the third sub-pixel 28. The first notch 64 , the second notch 74 and the third notch 85 are all oriented in the same direction, thereby facilitating processing.

[0094] Please refer to Figures 14 and 15. Figure 14 is a schematic top view of a partial structure of another embodiment of the display screen 100 shown in Figure 4. Figure 15 is a schematic diagram of an enlarged partial structure of the display screen 100 shown in Figure 14. In the second specific embodiment, the first isolating member 60 includes a first isolating segment 61, a second isolating segment 62, and a third isolating segment 63. The second isolating member 70 includes a fourth isolating segment 71, a fifth isolating segment 72, and a sixth isolating segment 73. The third isolating member 80 includes a seventh isolating segment 81, an eighth isolating segment 82, a ninth isolating segment 83, and a tenth isolating segment 84.

[0095] The difference from the first embodiment described above is that the orientation and number of the first notches 64 are different, and the first isolating member 60 further includes an eleventh isolating segment 65. The eleventh isolating segment 65 is spaced apart from the fourth side 264 of the first sub-pixel 26. A first notch 64 is formed between the first isolating segment 61 and the eleventh isolating segment 65, and a first notch 64 is also formed between the third isolating segment 63 and the eleventh isolating segment 65. The eleventh isolating segment 65 can reduce the risk of optical crosstalk between the first sub-pixel 26 and the adjacent second sub-pixel 27. The orientations of the multiple first notches 64 are the same. The orientations of the multiple second notches 74 are also the same. However, the orientations of the first notches 64 and the second notches 74 are opposite, with the first notches 64 facing a first direction, specifically upward, and the second notches 74 facing a second direction, specifically downward. As a result, current flows to the first sub-pixel 26 and the second sub-pixel 27 with almost equal probability.

[0096] The second isolation member 70 also includes a twelfth isolation segment 75. The twelfth isolation segment 75 is spaced apart from and opposite to the fourth side 264 of the second sub-pixel 27. A second gap 74 is formed between the fourth isolation segment 71 and the twelfth isolation segment 75, and a second gap 74 is also formed between the sixth isolation segment 73 and the twelfth isolation segment 75. The twelfth isolation segment 75 can reduce the risk of optical crosstalk between the second sub-pixel 27 and the adjacent first sub-pixel 26.

[0097] In addition, there are two isolation segments, namely the second isolation segment 62 and the fifth isolation segment 72, between the second side 262 of the first sub-pixel 26 and the adjacent second sub-pixel 27, and there are two isolation segments, namely the eleventh isolation segment 65 and the twelfth isolation segment 75, between the fourth side 264 of the first sub-pixel 26 and the adjacent second sub-pixel 27, which can further reduce the risk of optical crosstalk problems between the first sub-pixel 26 and the adjacent second sub-pixel 27.

[0098] In the second embodiment, the plurality of isolators 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. The first notch 64 faces the second channel portion 312, and the second notch 74 faces the second channel portion 312.

[0099] Please refer to Figures 16 and 17. Figure 16 is a schematic top view of the partial structure of another embodiment of the display screen 100 shown in Figure 4. Figure 17 is a schematic diagram of the partial enlarged structure of the display screen 100 shown in Figure 16. The difference between the third specific embodiment and the above-mentioned first specific embodiment is that the first notch 64 of some first isolating members 60 faces upward, and the first notch 64 of other first isolating members 60 faces downward. Every four of the second sub-pixels 27 are distributed at the four corners of a square area, and the second notches 74 of the four second isolating members 70 are arranged in a clockwise or counterclockwise direction. As shown in Figure 17, the second notch 74 in the upper left corner of the square area faces right, the second notch 74 in the upper right corner faces downward, the second notch 74 in the lower right corner faces left, and the second notch 74 in the lower left corner faces upward.

[0100] In a third embodiment, 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. Some of the first notches 64 and some of the second notches 74 face the first channel portions 311, while others face the second channel portions 312. First sub-pixels 26 have equal probability of connecting to the current paths of the first channel portions 311 and the second channel portions 312, and second sub-pixels 27 have equal probability of connecting to the current paths of the first channel portions 311 and the second channel portions 312, thereby improving the brightness uniformity of the display screen 100.

[0101] In other specific embodiments, every four first sub-pixels 26 are distributed at the four corners of a square area, and the first notches 64 of the four first spacers 60 are arranged in a clockwise or counterclockwise direction. The second notches 74 of some second spacers 70 face upward, while the second notches 74 of other second spacers 70 face downward.

[0102] Please refer to Figures 18 and 19. Figure 18 is a schematic diagram of the internal structure of a display screen 100 provided in another embodiment of the present application. Figure 19 is a schematic diagram of a partially enlarged structure of the display screen 100 described in Figure 18. In other embodiments, a groove 182 is provided on the surface of the support portion 18, and at least a portion of the isolation member 40 is disposed in the groove 182. The groove 182 is specifically provided in the pixel definition layer 11 and penetrates the pixel definition layer 11 along the Z-axis direction. The isolation member 40 can be completely located in the groove 182. In this case, there is no doubt that the surface of the isolation member 40 must be lower than the surface of the support protrusion 19; the isolation member 40 can also be partially located in the groove 182, and the other part extends out of the groove 182, but the surface of the portion of the isolation member 40 extending out of the groove 182 needs to be lower than the surface of the support protrusion 19.

[0103] Please refer to Figure 20, which illustrates the structure of display screen 100 shown in Figure 18, using a curing plate 50. When using an evaporation process to form light-emitting layer 20, during the processing of display screen 100, spacers 40 are first deposited on support portion 18, followed by light-emitting layer 20. After spacers 40 are deposited on support portion 18, curing is performed using curing plate 50 to facilitate the formation of sub-pixels 254 of light-emitting layer 20. During curing, curing plate 50 comes into contact with support protrusions 19. In this embodiment, the isolation member 40 is disposed in the groove 182, and the isolation member 40 is completely located in the groove 182. In other words, the surface of the isolation member 40 facing away from the bottom of the groove 182 is lower than the opening of the groove 182, so that the surface of the isolation member 40 is lower than the surface of the support protrusion 19. When the pickling plate 50 contacts the support protrusion 19, there is a gap H between the pickling plate 50 and the isolation member 40, which can prevent the pickling 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.

[0104] Furthermore, when the common layer 300 is deposited onto the support portion 18 using an evaporation process, the spacer 181 is blocked by the first isolation surface 42. Therefore, the material of the common layer 300 cannot be deposited onto the spacer 181, thereby creating a gap between the isolation member 40 and the common layer 300. In other words, the spacer 181 is located between the isolation member 40 and the first common portion 310, preventing the isolation member 40 and the common layer 300 from contacting each other. This spacer 181 enhances the isolation effect.

[0105] In this embodiment, by providing the groove 182 and disposing the isolating member 40 in the groove 182 , the isolating member 40 can have a sufficient thickness to increase the isolation effect of the isolating member 40 and can also prevent the isolating member 40 from being scratched by the pickling plate 50 .

[0106] Please refer to Figure 21, which is a partial structural diagram of a display screen 100 provided in another embodiment of the present application. In other embodiments, the surface of the isolating member 40 facing away from the bottom surface of the groove 182 can also extend beyond the opening of the groove 182 and be lower than the surface of the supporting protrusion 19, thereby further increasing the height of the isolating member 40 along the Z-axis and achieving a better isolation effect.

[0107] Please refer to Figure 22, which is a schematic diagram of the partial structure of the display screen 100 provided in another embodiment of the present application. In other embodiments, the groove 182 is recessed in the surface of the support protrusion 19, and the groove 182 extends to the support portion 18. Then, the isolating member 40 is arranged inside the groove 182, and the surface of the isolating member 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 isolating member 40 facing away from the bottom surface of the groove 182 is lower than the surface of the support protrusion 19. In other words, the support protrusion 19 and the isolating member 40 can reuse one support portion 18, so that the support portion 18 is fully utilized. In addition, because 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 deeper. When the isolating member 40 is arranged in the groove 182, the height of the isolating member 40 along the Z-axis direction can be set higher, thereby increasing the isolation effect.

[0108] In this embodiment, the steps of preparing the display screen 100 are as follows:

[0109] Step S10: providing a substrate 13.

[0110] Step S20 : ​​coating a flat layer 12 on the surface of the substrate 13 .

[0111] Step S30 : coating an anode material layer on the surface of the flat layer 12 facing away from the substrate 13 , and then performing exposure and development to form the anode material layer into an anode layer 21 . The anode layer 21 includes a plurality of anode blocks 211 .

[0112] Step S40: A pixel definition material layer is applied to the surface of the planar layer 12 facing away from the substrate 13, and then exposed and developed to form the pixel definition material into a pixel definition layer 11. The pixel definition layer 11 has through-holes, support portions 18, and support protrusions 19. The through-holes and the planar layer 12 form recesses 17. Multiple anode blocks 211 are respectively located in the multiple recesses 17.

[0113] Step S50 : Coating a negative photoresist material on the surface of the pixel definition layer 11 away from the planar layer 12 , and then performing exposure and development to transform the negative photoresist material into a 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 .

[0114] Step S60: Evaporate the hole injection layer 24 onto the pixel definition layer 11. After evaporation, a portion of the hole injection layer 24 is located within the plurality of recesses 17 and laminated onto the plurality of anode blocks 211. Another portion of the hole injection layer 24 is laminated and secured to the plurality of support portions 18. During the deposition of the hole injection layer 24, a frame-shaped mask is used, and the mask is positioned around the outer periphery of the display backplane 10.

[0115] Step S70: Using a pre-cured film plate 50, the sub-pixels 254 of the light-emitting layer 20 are deposited onto the pixel definition layer 11 using an evaporation process. The pre-cured film plate 50 can be a metal fine-grained film plate 50. The sub-pixels 254 are positioned within the recesses 17, and the sub-pixels 254 are stacked on the portion of the hole injection layer 24 located within the recesses 17.

[0116] Step S80: Evaporation deposits the electron transport layer 251 and cathode layer 22 sequentially. After evaporation is complete, portions of the electron transport layer 251 and cathode layer 22 are located within the plurality of recesses 17 and are stacked on the plurality of sub-pixels 254. Other portions of the electron transport layer 251 and cathode layer 22 are stacked on the portion of the hole injection layer 24 located on the support portion 18. During the evaporation of the electron transport layer 251 and cathode layer 22, a frame-shaped mask is used, which surrounds the outer periphery of the display backplane.

[0117] Step S90: Prepare an encapsulation layer 31 on the cathode layer 22 so that the separator 40 is completely covered by the encapsulation layer 31. The encapsulation layer 31 includes two silicon nitride layers and an ink layer, with the ink layer stacked between the two silicon nitride layers. The silicon nitride layer can be prepared using chemical vapor deposition, and the ink layer can be formed by printing.

[0118] Step S100 : using adhesive to bond the polarizing layer 32 to the encapsulation layer 31 .

[0119] Step S110 : using adhesive to bond the cover plate 33 to the polarizing layer.

[0120] In step S70, while the curing plate 50 is curing, it comes into direct contact with the support protrusions 19. In other words, the support protrusions 19 support the curing plate 50, preventing contact between the curing plate 50 and the surface of the support portion 18, thus preventing the curing plate 50 from causing extensive damage to the support portion 18. Furthermore, because the surface of the spacer 40 facing away from the support portion 18 is lower than the surface of the support protrusions 19 facing away from the support portion 18, the curing plate 50 does not contact the spacer 40 during curing, preventing the curing plate 50 from scratching the spacer 40. This reduces the risk of damage to the spacer 40 and enhances its structural stability, enabling the spacer 40 to provide effective isolation and reducing the risk of optical crosstalk issues in the display screen 100.

[0121] In the above steps S60 and S80, when the evaporation process is used for evaporation, the first isolation surface 42 of the isolation member 40 blocks the spacer area 181, so that the materials of the common layer 300 such as the electron transport layer 251 and the cathode layer 22 cannot be evaporated to the spacer area 181. The spacer area 181 prevents the isolation member 40 and the common layer 300 from contacting each other, thereby preventing the isolation effect of the isolation member 40 from being weakened.

[0122] The above are only some of the embodiments and implementations of this application. The scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A display screen, characterized in that: include: Display backplane and light-emitting layer; The surface of the display back plate is provided with a plurality of recesses, and a support portion is provided between any two adjacent recesses; and the surfaces of some of the support portions are provided with support protrusions; 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 stacked on the surface of the support portion; the second common portion is stacked on the plurality of sub-pixels; at least a portion of each of the sub-pixels is surrounded by an isolation member; The isolating member is disposed on the supporting portion, passes through the first common portion, and points from the light-emitting layer to the direction of the display backplane. The surface of the isolating member away from the supporting portion is lower than the surface of the supporting protrusion away from the supporting 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 two adjacent rows of isolation members, and the second channel portion is located between two adjacent columns of isolation members; current is transmitted to the sub-pixel via the first channel portion and / or the second channel portion.

3. The display screen according to claim 2, characterized in that: The isolating member has a notch, and the first common portion further includes a connecting portion, which 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 supporting portion to the recessed portion, the notch faces the first channel portion or the second channel portion.

5. The display screen according to claim 3, characterized in that: At least some of the notches of the isolation members are oriented in the same direction.

6. The display screen according to claim 3, characterized in that: The notches of some of the isolation members face the first direction, and the notches of another part of the isolation members face the second direction. 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 four corners of a square area, and the directions of the notches of the isolation members around the four sub-pixels are arranged clockwise or counterclockwise.

8. The display screen according to any one of claims 1 to 7, characterized in that: The support portion is provided with a spacing area; the spacing area surrounds the isolation member to separate the isolation member and 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 comprises 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; Along the direction from the support portion to the recessed portion, the width of the first isolation surface is smaller than the width of the second isolation surface; Along the thickness direction, a portion of the first isolation surface is opposite to the second isolation surface, and another portion of the first isolation surface is opposite to the spacer.

10. The display screen according to claim 9, characterized in that: The isolating member further comprises a first side surface and a second side surface, wherein the first side surface and the second side surface are disposed opposite to each other, and the first side surface is connected between one side of the first isolating surface and the second isolating surface, and the second side surface is connected between the other side of the first isolating surface and the second isolating 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. The support portion is provided with a plurality of support members.

11. The display screen according to any one of claims 1 to 7, characterized in that: The isolating member is protruded from the surface of the supporting portion.

12. The display screen according to any one of claims 1 to 7, characterized in that: A groove is formed on the surface of the support portion, and at least a portion of the isolation member is disposed in the groove.

13. The display screen according to claim 12, characterized in that: The isolation member is disposed in the groove, pointing from the light emitting layer to the display backplane, and a surface of the isolation member away from the groove is lower than a surface of the support portion.

14. The display screen according to claim 12, characterized in that: The groove is concavely arranged on the surface of the supporting protrusion and extends to the supporting 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 flat layer and a substrate; along the thickness direction, the pixel definition layer, the flat layer and the substrate are stacked and fixed in sequence; the pixel definition layer and the flat layer surround the concave portion.

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

17. An electronic device, characterized in that: The invention comprises a housing and the display screen according to any one of claims 1 to 16, wherein the display screen is mounted on the housing.

Images