CN218772860U - Display unit, display panel and display device - Google Patents

Abstract

The utility model discloses a display element, display panel and display device. The display unit includes: the anode layer, the cavity layer, the light-emitting layer, the electron layer and the cathode layer are sequentially stacked; the light-emitting layer comprises at least two light-emitting sublayers which have different light-emitting colors and are arranged in a laminated manner; the areas of the perpendicular projections of the light-emitting sublayers of different light-emitting colors on the hole layer are different. The utility model provides a display element, display panel and display device can improve display panel's resolution ratio, also can reduce display panel's the preparation degree of difficulty and cost of manufacture, improves display panel's yield.

Description

Display unit, display panel and display device

Technical Field

The utility model relates to a show technical field, especially relate to a display element, display panel and display device.

Background

With the development of display panels, users have increasingly high requirements on the resolution of the display panels. The area occupied by the sub-pixels in the high-resolution display panel is small, and the distance between the sub-pixels is small, so that the requirements of manufacturing the high-resolution display panel on the precision of equipment and the processing precision of a jig are high. For example, a mask plate with a small opening is needed during vapor deposition, which increases the processing difficulty, increases the manufacturing cost, and also results in low product yield.

SUMMERY OF THE UTILITY MODEL

The utility model provides a display element, display panel and display device can improve display panel's resolution ratio, also can reduce display panel's the preparation degree of difficulty and cost of manufacture, improves display panel's yield.

According to an aspect of the utility model provides a display element, display element includes: the anode layer, the cavity layer, the light-emitting layer, the electron layer and the cathode layer are sequentially stacked;

the light-emitting layer comprises at least two light-emitting sub-layers which have different light-emitting colors and are arranged in a laminated manner;

the areas of the perpendicular projections of the light-emitting sublayers of different light-emitting colors on the hole layer are different.

Optionally, the anode layer comprises an equal number of anode sublayers as the number of light emitting sublayers;

the luminescent sublayers with different luminescent colors are provided with corresponding anode sublayers;

the perpendicular projections of the different anode sublayers onto the hole layer do not overlap.

Optionally, a vertical projection of the anode sublayer on the hole layer overlaps a vertical projection of the corresponding light-emitting sublayer on the hole layer.

Optionally, the light emitting layer includes three light emitting sublayers with different light emitting colors;

the three light emitting sub-layers of different light emitting colors include a blue light emitting sub-layer, a green light emitting sub-layer, and a red light emitting sub-layer.

Optionally, the area of the vertical projection of the light-emitting sublayer emitting red light on the hole layer is smaller than the area of the vertical projection of the light-emitting sublayer emitting green light on the hole layer;

the area of the vertical projection of the green light-emitting sub-layer on the hole layer is smaller than the area of the vertical projection of the blue light-emitting sub-layer on the hole layer.

Optionally, the centers of the vertical projections of the light-emitting sublayers of different light-emitting colors on the hole layer are located at the same point.

Optionally, the anode layer includes a first anode sublayer, a second anode sublayer and a third anode sublayer;

the first anode sublayer surrounds the second anode sublayer;

the second anode sublayer surrounds the third anode sublayer.

Optionally, the first anode sublayer is configured to receive a first voltage for making the blue light emitting sublayer emit blue light;

the second anode sublayer is used for receiving a second voltage for enabling the light-emitting sublayer which emits green light to emit green light;

the third anode sublayer is used for receiving a third voltage for making the red light emitting sub-layer emit red light;

the vertical projection of the first anode sublayer on the hole layer is not overlapped with the vertical projection of the green light-emitting sublayer on the hole layer;

the vertical projection of the second anode sublayer on the hole layer is not overlapped with the vertical projection of the red light-emitting sublayer on the hole layer;

the vertical projection of the third anode sublayer on the hole layer overlaps with the vertical projection of the red light-emitting sublayer on the hole layer.

According to the utility model discloses a further aspect provides a display panel, and this display panel includes the utility model discloses arbitrary embodiment provides a display element.

According to the utility model discloses an on the other hand provides a display device, and this display device includes the utility model discloses arbitrary embodiment provides a display panel.

The embodiment provides a display unit, wherein a light emitting layer in the display unit comprises at least two light emitting sub-layers with different light emitting colors, so that the display unit can emit light with different colors. The light emitting sublayers in the light emitting layer are stacked, so that the area occupied by the display unit can be reduced, and the resolution of the display panel comprising the display unit of the embodiment can be improved. When the display panel comprising the display units of the embodiment is manufactured, the distance between every two adjacent display units is not required to be small enough, so that the manufacturing difficulty and the manufacturing cost of the display panel are reduced. In addition, the areas of the vertical projections of the light-emitting sublayers with different light-emitting colors in the display unit on the hole layer are different, so that part of light in the light-emitting sublayers is not interfered by light emitted by other light-emitting sublayers, and the light-emitting purity of the display unit is improved. In summary, the display unit provided in this embodiment can improve the resolution of the display panel, and also can reduce the manufacturing difficulty and the manufacturing cost of the display panel, thereby improving the yield of the display panel.

It should be understood that the statements herein are not intended to identify key or critical features of any embodiment of the present invention, nor are they intended to limit the scope of the invention. Other features of the present invention will become apparent from the following description.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained without creative efforts.

Fig. 1 is a schematic structural diagram of a display unit according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of another display unit provided in accordance with an embodiment of the present invention;

fig. 3 is a schematic structural diagram of another display unit provided in accordance with an embodiment of the present invention;

fig. 4 is a schematic structural diagram of another display unit provided in accordance with an embodiment of the present invention;

fig. 5 is a schematic top view of a display unit according to an embodiment of the present invention;

FIG. 6 is a schematic view of the display unit dissected along the dissection line A1A2 in FIG. 5;

fig. 7 is a schematic top view of a display unit according to an embodiment of the present invention;

FIG. 8 is a schematic view of the display unit dissected along dissection line B1B2 in FIG. 6;

fig. 9 is a schematic structural diagram of another display unit provided in accordance with an embodiment of the present invention;

fig. 10 is a schematic structural diagram of another display unit provided in accordance with an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a display panel according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of another display panel according to an embodiment of the present invention.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Fig. 1 is a schematic structural diagram of a display unit according to an embodiment of the present invention, and referring to fig. 1, the display unit 100 provided in this embodiment includes: an anode layer 110, a hole layer 120, a light-emitting layer 130, an electron layer 140, and a cathode layer 150, which are sequentially stacked; the light emitting layer 130 includes at least two light emitting sub-layers 131 having different light emitting colors and disposed in a stacked manner; the areas of the perpendicular projections of the light emitting sublayers 131 of different light emitting colors on the hole layer 120 are different.

Specifically, the light emitting layer 130 may be an OLED light emitting layer, and the light generated by the light emitting layer 130 may be emitted only from the anode layer 110, may be emitted only from the cathode layer 150, or may be emitted from both the anode layer 110 and the cathode layer 150. The material of the anode layer 110 and the material of the cathode layer 150 may be the same. When the material of the anode layer 110 and the material of the cathode layer 150 are both Indium Tin Oxide (ITO), if light is required to exit only from the cathode layer 150, a light reflecting layer needs to be disposed on the side of the anode layer 110 away from the cathode layer 150, and the material of the light reflecting layer may be silver. If it is desired that light only exits the anode layer 110, a light-reflecting layer may be provided on the side of the cathode layer 150 remote from the anode layer 110. If light is emitted from the anode layer 110 and light is emitted from the cathode layer 150, no light-reflecting layer is required on either side of the anode layer 110 or the cathode layer 150.

The hole layer 120 is used to transport holes in the anode layer 110 to the light emitting layer 130, the electron layer 140 is used to transport electrons in the cathode layer 150 to the light emitting layer 130, and the holes and the electrons transported to the light emitting layer 130 are used to excite light emitting molecules in the light emitting layer 130, thereby causing the light emitting layer 130 to emit light.

The light emitting sub-layer 131 may emit red, green or blue light, and the light emitting layer 130 includes at least two light emitting sub-layers 131 with different light emitting colors, so that the display unit 100 can emit light with different colors.

The light emitting sub-layers 131 with different light emitting colors are stacked, so that the area occupied by the display unit 100 can be reduced, and the resolution of the display panel including the display unit 100 provided in this embodiment can be improved. In addition, when the display panel including the display unit 100 of the embodiment is manufactured, the distance between two adjacent display units 100 and the size of the opening of the mask plate can be properly increased, so that the manufacturing difficulty of the display panel is reduced, and the product yield is improved.

The areas of the vertical projections of the light emitting sub-layers 131 with different light emitting colors on the hole layer 120 are different, so that part of the light emitted by the light emitting sub-layer 131 does not generate crosstalk with the light emitted by other light emitting sub-layers 131, and the light emitting purity of the display unit 100 is improved.

The embodiment provides a display unit, wherein a light emitting layer in the display unit comprises at least two light emitting sub-layers with different light emitting colors, so that the display unit can emit light with different colors. The light emitting sublayers in the light emitting layer are stacked, so that the area occupied by the display unit can be reduced, and the resolution of the display panel comprising the display unit of the embodiment can be improved. When the display panel comprising the display units of the embodiment is manufactured, the distance between every two adjacent display units is not required to be small enough, so that the manufacturing difficulty and the manufacturing cost of the display panel are reduced. In addition, the vertical projection areas of the light-emitting sublayers with different light-emitting colors in the display unit on the hole layer are different, so that part of light in the light-emitting sublayers is not interfered by light emitted by other light-emitting sublayers, and the light-emitting purity of the display unit is improved. In summary, the display unit provided in this embodiment can improve the resolution of the display panel, and also can reduce the manufacturing difficulty and the manufacturing cost of the display panel, thereby improving the yield of the display panel.

Alternatively, fig. 2 is a schematic structural diagram of another display unit provided according to an embodiment of the present invention, and referring to fig. 2, the anode layer 110 includes an equal number of anode sublayers 111 as the number of light emitting sublayers 131; the luminescent sublayers 131 with different luminescent colors all have corresponding anode sublayers 111; the perpendicular projections of the different anode sublayers 111 on the hole layer 120 do not overlap.

Specifically, the vertical projections of the different anode sublayers 111 on the hole layer 120 are arranged to be non-overlapping, so that the different anode sublayers 111 are not electrically connected to each other, thereby preventing voltages on the different anode sublayers 111 from being superimposed. Because the light-emitting sub-layers 131 with different light-emitting colors need different excitation voltages when emitting light, the corresponding anode sub-layers 111 need to be disposed on the light-emitting sub-layers 131 with different light-emitting colors, so that the different anode sub-layers 111 receive different voltages at the same time, and the light-emitting sub-layers 131 with different light-emitting colors emit light at the same time. Illustratively, the light emitting sub-layer emitting blue light may emit blue light in a voltage range of 4V to 5V, and may not emit blue light in a voltage range of less than 4V to 5V. The light-emitting sublayer emitting green light emits green light when the voltage range is 2V-3V, and does not emit green light when the voltage is lower than 2V-3V. The light emitting sublayer emitting red light emits red light at a voltage ranging from 1V to 1.5V and does not emit red light at a voltage lower than 1V to 1.5V. When the anode sub-layer 111 corresponding to the red light emitting sub-layer receives a voltage of 1V to 1.5V, the red light emitting sub-layer emits red light, and the green light emitting sub-layer in the same display unit 100 as the red light emitting sub-layer does not emit green light. When the anode sub-layer 111 corresponding to the red light emitting light sub-layer receives a voltage of 1V to 1.5V and the anode sub-layer 111 corresponding to the green light emitting light sub-layer receives a voltage of 2V to 3V, the red light emitting light sub-layer emits red light and the green light emitting light sub-layer in the same display unit 100 as the red light emitting light sub-layer emits green light. The anode layer 110 is provided with the anode sublayers 111 equal to the number of the light-emitting sublayers 131, so that the light-emitting sublayers 131 in the display unit 100 can emit light simultaneously, or the light-emitting sublayers 131 with different light-emitting colors can be controlled to emit light individually.

Optionally, with continued reference to fig. 2, the vertical projection of the anode sublayer 111 on the hole layer 120 overlaps the vertical projection of its corresponding light-emitting sublayer 131 on the hole layer 120.

Specifically, fig. 3 is a schematic structural diagram of another display unit provided according to an embodiment of the present invention, and referring to fig. 3, a vertical projection of the anode sublayer 111 on the hole layer 120 may be located within a vertical projection of its corresponding light-emitting sublayer 131 on the hole layer 120. The vertical projection of the anode sublayer 111 on the hole layer 120 overlaps with the vertical projection of the corresponding light-emitting sublayer 131 on the hole layer 120, so that holes in the anode sublayer 111 can be quickly transmitted to the corresponding light-emitting sublayer 131 along the longitudinal direction (i.e., the stacking direction of the light-emitting sublayers 131), the path of the transverse transmission of the holes is reduced, the light-emitting efficiency of the light-emitting sublayers 131 is improved, and the light-emitting rate of the display unit 100 is increased.

Alternatively, fig. 4 is a schematic structural diagram of another display unit provided according to an embodiment of the present invention, and referring to fig. 4, the light-emitting layer 130 includes three light-emitting sublayers with different light-emitting colors; the three light emitting sub-layers of different light emitting colors include a blue light emitting sub-layer 1311, a green light emitting sub-layer 1312, and a red light emitting sub-layer 1313.

Specifically, by providing one display unit 100 including three different light-emitting sublayers, the resolution of the display panel including the display unit 100 provided by this embodiment can be further improved.

Alternatively, with continued reference to fig. 4, the area of the vertical projection of the red-emitting light-emitting sublayer 1313 onto the hole layer 120 is smaller than the area of the vertical projection of the green-emitting light-emitting sublayer 1312 onto the hole layer 120; the area of the vertical projection of the green light-emitting sublayer 1312 on the hole layer 120 is smaller than the area of the vertical projection of the blue light-emitting sublayer 1311 on the hole layer 120.

In particular, the light emitting sublayer 1311 emitting blue light may be located on the surface of the hole layer 120 remote from the anode layer 110. Because the efficiency of converting luminescent molecules into light is relatively low and a part of electric energy is converted into heat energy when the luminescent sublayer 1311 emitting blue light emits light, the luminescent sublayer 1311 emitting blue light needs to be arranged to have a large area, so that the luminescent sublayer 1311 emitting blue light can rapidly dissipate heat. In addition, since the transmittance of red light is stronger than that of green light and the transmittance of green light is stronger than that of blue light, the area where the light emitting sub-layers 1313 emitting red light are disposed is minimized, and the full coverage of blue light and green light with red light can be prevented, and the area where the light emitting sub-layers 1312 emitting green light are disposed is smaller than that of the light emitting sub-layers 1311 emitting blue light, and the full coverage of blue light with green light can be prevented.

Alternatively, fig. 5 is a schematic top view structure diagram of a display unit according to an embodiment of the present invention, fig. 6 is a schematic top view structure diagram of a display unit obtained by dissection along an dissection line A1A2 in fig. 5, fig. 7 is a schematic top view structure diagram of another display unit according to an embodiment of the present invention, fig. 8 is a schematic top view structure diagram of a display unit obtained by dissection along a dissection line B1B2 in fig. 6, and referring to fig. 5 to 8, centers of vertical projections of the light-emitting sub-layers 131 of different light-emitting colors on the hole layer 120 are located at the same point.

Specifically, the light emitting layer 130 of the display unit 100 shown in fig. 5 and 6 includes light emitting sublayers 131 of two emission colors, and the light emitting layer 130 of the display unit 100 shown in fig. 7 and 8 includes light emitting sublayers 131 of three emission colors. The vertical projection centers of the light emitting sub-layers 131 with different light emitting colors on the cavity layer 120 are arranged at the same point, which facilitates the positioning of the mask plate when the display unit 100 is manufactured, thereby improving the manufacturing efficiency of the display unit 100.

The shape of each light-emitting sublayer 131 shown in fig. 5 and 7 is rectangular, but the present invention is not limited thereto, and the shape of each light-emitting sublayer 131 may be circular, elliptical, or other polygonal shapes in practical applications.

Alternatively, fig. 9 is a schematic structural diagram of another display unit provided according to an embodiment of the present invention, and referring to fig. 9, the anode layer 110 includes a first anode sublayer 1111, a second anode sublayer 1112, and a third anode sublayer 1113; the first anode sublayer 1111 surrounds the second anode sublayer 1112; the second anode sublayer 1112 surrounds the third anode sublayer 1113.

Specifically, the first anode sublayer 1111 corresponds to the blue light emitting sublayer 1311, the second anode sublayer 1112 corresponds to the green light emitting sublayer 1312, and the third anode sublayer 1113 corresponds to the red light emitting sublayer 1313. When the centers of the vertical projections of the light emitting sublayers of different light emitting colors on the hole layer 120 are located at the same point, the first anode sublayer 1111 is disposed to surround the second anode sublayer 1112, so that the light emitting sublayer 1311 emitting blue light has the corresponding first anode sublayer 1111 in the region not covering the light emitting sublayer 1312 emitting green light, thereby reducing the transmission path of the hole exciting blue light in the lateral direction and improving the light emitting efficiency of the light emitting sublayer 1311 emitting blue light. Similarly, the second anode sublayer 1112 is disposed around the third anode sublayer 1113, which can reduce the transmission path of holes for exciting green light in the transverse direction and improve the light emitting efficiency of the light emitting sublayer 1312 for emitting green light.

Alternatively, fig. 10 is a schematic structural diagram of another display unit provided in accordance with an embodiment of the present invention, and referring to fig. 10, the anode layer 110 includes a first anode sublayer 1111 and a second anode sublayer 1112; the first anode sublayer 1111 surrounds the second anode sublayer 1112.

Specifically, the first anode sublayer 1111 corresponds to the blue light emitting sublayer 1311, the first anode sublayer 1111 is configured to receive a first voltage for enabling the blue light emitting sublayer 1311 to emit blue light, the second anode sublayer 1112 corresponds to the green light emitting sublayer 1312, and the second anode sublayer 1112 is configured to receive a second voltage for enabling the green light emitting sublayer 1312 to emit green light. Disposing first anode sublayer 1111 around second anode sublayer 1112 may improve the luminous efficiency of blue light-emitting sublayer 1311.

Alternatively, with continued reference to fig. 9, the first anode sublayer 1111 is configured to receive a first voltage for blue light emission of the blue light emitting sublayer 1311; the second anode sublayer 1112 is for receiving a second voltage for making the green light emitting sublayer 1312 emit green light; the third anode sublayer 1113 is for receiving a third voltage for making the light emitting sublayer 1313 emitting red light emit red light; the vertical projection of the first anode sublayer 1111 onto the hole layer 120 does not overlap with the vertical projection of the green light-emitting sublayer 1312 onto the hole layer 120; the perpendicular projection of the second anode sublayer 1112 on the hole layer 120 does not overlap with the perpendicular projection of the red-emitting light-emitting sublayer 1312 on the hole layer 120; the vertical projection of the third anode sublayer 1113 onto the hole layer 120 overlaps with the vertical projection of the red-emitting light-emitting sublayer 1313 onto the hole layer 120.

Specifically, the first voltage may be 4V to 5V, the second voltage may be 2V to 3V, and the third voltage may be 1V to 1.5V. When the first anode sublayer 1111 receives the first voltage, the light emitting sublayer 1311 emitting blue light emits blue light. Since the first voltage is greater than the second voltage and the third voltage, when holes in the first anode sublayer 1111 are transferred to the green light emitting sublayer 1312 and the red light emitting sublayer 1313, a portion of the light emitting molecules in the light emitting sublayer 1312 that laser emits green light emit green light and a portion of the light emitting molecules in the light emitting sublayer 1313 that emits red light emit red light, resulting in impure light emission colors of the display unit 100. Disposing the vertical projection of the first anode sublayer 1111 on the hole layer 120 without overlapping the vertical projection of the green light-emitting sublayer 1312 on the hole layer 120 can reduce the number of holes in the first anode sublayer 1111 to be longitudinally transferred to the green light-emitting sublayer 1312 and the red light-emitting sublayer 1313, thereby reducing the light-emitting ability of the green light-emitting sublayer 1312 and the red light-emitting sublayer 1313 when the light-emitting layer 130 emits only blue light. Also, the vertical projection of the second anode sublayer 1112 on the hole layer 120 is disposed without overlapping the vertical projection of the red-emitting light emitting sublayer 1313 on the hole layer 120, and the light emitting capability of the red-emitting light emitting sublayer 1313 can be reduced when the light emitting layer 130 emits only green light.

In addition, the perpendicular projection of first anode sublayer 1111 onto hole layer 120 is located within the perpendicular projection of blue light emitting sublayer 1311 onto hole layer 120, and the perpendicular projection of second anode sublayer 1112 onto hole layer 120 is located within the perpendicular projection of green light emitting sublayer 1312 onto hole layer 120.

This embodiment still provides a display panel, and this display panel includes the utility model discloses arbitrary embodiment provides a display element.

Fig. 11 is a schematic structural diagram of a display panel according to an embodiment of the present invention, referring to fig. 11, the display panel in fig. 11 includes, in addition to the display unit 100 provided in any embodiment of the present invention, a substrate 200 and a solid color light emitting unit 300, the display unit 100 and the solid color light emitting unit 300 are located on the same side of the substrate 200, the display unit 100 can emit light of two colors, and the light emitting color of the solid color light emitting unit 300 is different from the light emitting color of the display unit 100.

Fig. 12 is a schematic structural diagram of another display panel provided according to an embodiment of the present invention, referring to fig. 12, the display panel in fig. 12 includes a substrate 200 in addition to the display unit 100 provided in any embodiment of the present invention, the display unit 100 is located on one side of the substrate 200, and the display unit 100 can emit light of three colors.

This embodiment still provides a display device, and this display device includes the utility model discloses arbitrary embodiment provides a display panel.

Specifically, the display device provided in this embodiment may be a device with a display function, such as a mobile phone, a computer, or a tablet.

It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present invention may be executed in parallel, may be executed sequentially, or may be executed in different orders, as long as the desired result of the technical solution of the present invention can be achieved, and the present invention is not limited thereto.

The above detailed description does not limit the scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made, depending on design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A display unit, comprising: the anode layer, the cavity layer, the light-emitting layer, the electron layer and the cathode layer are sequentially stacked;

the light-emitting layer comprises at least two light-emitting sub-layers which have different light-emitting colors and are arranged in a laminated manner;

the areas of the perpendicular projections of the light-emitting sublayers of different light-emitting colors on the hole layer are different.

2. The display unit of claim 1, wherein the anode layer comprises an equal number of anode sublayers as the number of light emitting sublayers;

the luminescent sublayers with different luminescent colors are provided with corresponding anode sublayers;

the perpendicular projections of the different anode sublayers onto the hole layer do not overlap.

3. The display unit according to claim 2, wherein a vertical projection of the anode sublayer on the hole layer overlaps a vertical projection of the corresponding light-emitting sublayer on the hole layer.

4. The display unit according to claim 1, wherein the light-emitting layer comprises three light-emitting sublayers of different emission colors;

the three light emitting sub-layers of different light emitting colors include a blue light emitting sub-layer, a green light emitting sub-layer, and a red light emitting sub-layer.

5. The display unit according to claim 4, wherein the area of the perpendicular projection of the red-emitting light-emitting sublayer on the hole layer is smaller than the area of the perpendicular projection of the green-emitting light-emitting sublayer on the hole layer;

the area of the vertical projection of the green light-emitting sub-layer on the hole layer is smaller than the area of the vertical projection of the blue light-emitting sub-layer on the hole layer.

6. The display unit according to claim 1, wherein the centers of the perpendicular projections of the light-emitting sublayers of different emission colors on the hole layer are located at the same point.

7. The display cell of claim 5, wherein the anode layer comprises a first anode sublayer, a second anode sublayer, and a third anode sublayer;

the first anode sublayer surrounds the second anode sublayer;

the second anode sublayer surrounds the third anode sublayer.

8. The display unit of claim 7, wherein the first anode sublayer is configured to receive a first voltage that causes the blue light emitting sublayer to emit blue light;

the second anode sublayer is used for receiving a second voltage for enabling the light-emitting sublayer which emits green light to emit green light;

the third anode sublayer is used for receiving a third voltage for making the red light emitting sub-layer emit red light;

the vertical projection of the first anode sublayer on the hole layer is not overlapped with the vertical projection of the green light-emitting sublayer on the hole layer;

the vertical projection of the second anode sublayer on the hole layer does not overlap with the vertical projection of the red-emitting light-emitting sublayer on the hole layer;

the vertical projection of the third anode sublayer on the hole layer overlaps with the vertical projection of the red light-emitting sublayer on the hole layer.

9. A display panel comprising the display unit according to any one of claims 1 to 8.

10. A display device characterized by comprising the display panel according to any one of claims 9.

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