Display panel, display module and electronic equipment

Abstract

The invention discloses a display panel, a display module and electronic equipment, relates to the technical field of display modules, and can solve the technical problem of high energy consumption of the display panel. The display module comprises a plurality of sub-pixels and pixel definition layers, the sub-pixels are arranged in an array mode, the pixel definition layers are arranged between the adjacent sub-pixels, the sub-pixels comprise first color sub-pixels, the first color sub-pixels comprise first light-emitting layers and second light-emitting layers, and the color gamut area of the first light-emitting layers is different from the color gamut area of the second light-emitting layers.

Description

Technical Field

[0001] This application relates to the field of display module technology, and more particularly to a display panel, display module, and electronic device. Background Technology

[0002] Currently, mobile phones, computers, and other electronic devices have become an integral part of our lives, ubiquitous and significantly improving people's living standards. With the rapid development of communication equipment technology, the related display panel industry has also continuously developed, and the application range of display panels is becoming increasingly wide. However, display panels using this technology suffer from high energy consumption. Summary of the Invention

[0003] This application provides a display panel, a display module, and an electronic device that can reduce the energy consumption of the display panel and the display module and improve power efficiency.

[0004] To achieve the above objectives, this application adopts the following technical solution:

[0005] In a first aspect, this application provides a display panel including a plurality of sub-pixels and a pixel definition layer. The plurality of sub-pixels are arranged in an array, and adjacent sub-pixels are separated by a pixel definition layer. Each sub-pixel includes a first color sub-pixel, which includes a first light-emitting layer and a second light-emitting layer. The color gamut area of ​​the first light-emitting layer is different from the color gamut area of ​​the second light-emitting layer.

[0006] The display panel of this application embodiment integrates two color gamut devices with different color gamut areas in the same display panel. In actual use, different color gamut devices (both the first light-emitting layer and the second light-emitting layer are color gamut devices) can be selected to work according to actual needs, so that the display panel can display different color gamuts through the corresponding color gamut devices.

[0007] Display panels can achieve a wide and richer color gamut display effect using high color gamut devices to enhance the user experience. However, in this case, high color gamut devices can display low color gamut colors through color matching, resulting in significant power consumption waste. Alternatively, display panels can also achieve a low color gamut display effect using low color gamut devices, improving luminous efficiency and reducing power consumption waste. This avoids the problem of high energy consumption caused by a single display panel only providing high color gamut devices, which can only achieve low color gamut colors through color matching.

[0008] In one possible implementation of the first aspect, the color gamut standard of one of the first and second light-emitting layers is sRGB. The first light-emitting layer can satisfy the sRGB color gamut and form a low color gamut device. The color gamut standard of the second light-emitting layer can be a high color gamut standard that can completely cover sRGB in the CIE chromaticity diagram, thereby enabling the display panel 100 of this application to support both high and low color gamut displays in hardware.

[0009] In one possible implementation of the first aspect, the color gamut standard of the other of the first and second emissive layers is one of DCI-P3, BT2020, Adobe RGB, or NTSC.

[0010] In the embodiments of this application, when a low color gamut device (one of the first and second light-emitting layers) is used to display a low color gamut on the display panel, higher luminous efficiency can be achieved, which is beneficial for reducing power consumption. Conversely, when a high color gamut device is used to display a low color gamut on the display panel, better colors are displayed. Thus, from the user's perspective, the display panel provides multiple options, without forcing the use of a high color gamut device to display a low color gamut. Users can choose to use a low color gamut device to display a low color gamut, thereby improving luminous efficiency, reducing energy consumption, and making electronic devices more energy-efficient, achieving energy-saving design.

[0011] In one possible implementation of the first aspect, the first color sub-pixel emits green light. That is, the display panel of this application has two types of first color sub-pixels that emit green light, thereby obtaining greater power consumption benefits in the area far from point B0 (the area emitting green light), avoiding the situation where there is a large energy loss due to the low color luminous efficiency of point B0, thereby reducing power consumption and increasing power consumption benefits.

[0012] In one possible implementation of the first aspect, the first color sub-pixel includes a first sub-pixel, which includes a first light-emitting layer and a second light-emitting layer stacked and spaced apart. Thus, in a plurality of sub-pixels, each sub-pixel can become a first sub-pixel. For example, each sub-pixel emitting green light can have both a first light-emitting layer and a second light-emitting layer, so that all sub-pixels emitting green light form first sub-pixels. This allows the first and second light-emitting layers to provide different color gamut devices within the same sub-pixel, thereby improving the power efficiency of the display panel and reducing energy consumption.

[0013] In one possible implementation of the first aspect, the first sub-pixel has a first display state, and when the first sub-pixel is in the first display state, the first emissive layer is energized. The first sub-pixel also has a second display state, and when the second sub-pixel is in the second display state, the second emissive layer is energized and emits light. The color gamut area of ​​the first emissive layer is different from that of the second emissive layer; one forms a high color gamut, and the other forms a low color gamut. Thus, the user can select whether the first sub-pixel is in the first display state or the second display state. The first display state and the second display state can correspond to either a high-definition mode or a low-power mode. The user can obtain more vivid colors with a high color gamut by selecting the high-definition mode, and obtain energy savings by selecting the low-power mode.

[0014] In one possible implementation of the first aspect, the first sub-pixel has a third display state. When the first sub-pixel is in the third display state, both the first and second light-emitting layers are energized. That is, current flows through both the first and second light-emitting layers, and the first and second light-emitting layers emit light together. At this time, since the low color gamut device and the low color gamut device work simultaneously to achieve dual light emission, the luminous efficiency is higher and the power consumption benefit is greater.

[0015] In one possible implementation of the first aspect, the first sub-pixel includes a first electrode layer, a second electrode layer, and a third electrode layer. The first and second electrode layers are located on opposite sides of the first light-emitting layer, and the second and third electrode layers are located on opposite sides of the second light-emitting layer. The first and second electrode layers have opposite polarities, and the second and third electrode layers have opposite polarities. Thus, the first and second light-emitting layers share a single second electrode layer, and by controlling the polarity of the voltage on the second electrode layer, the first and second light-emitting layers can be controlled separately.

[0016] In one possible implementation of the first aspect, the display panel further includes conductive isolation pillars disposed on the pixel definition layer, with conductive isolation pillars on both sides of each first sub-pixel. The conductive isolation pillars can be electrically connected to a power management chip, thereby applying different voltages to the first electrode layer, the second electrode layer, and the third electrode layer through the power management chip.

[0017] In one possible implementation of the first aspect, the display panel further includes a first conductive isolation pillar and a second conductive isolation pillar, which are disposed on a pixel definition layer. A first sub-pixel is located between the first and second conductive isolation pillars. A second electrode layer is electrically connected to the first conductive isolation pillar, and a third electrode layer is electrically connected to the second conductive isolation pillar. Thus, each sub-pixel achieves electrical connection with the first and second conductive isolation pillars on both sides.

[0018] In one possible implementation of the first aspect, the first sub-pixel includes a first charge generation layer and a second charge generation layer, wherein the first charge generation layer is disposed between the first light-emitting layer and the second electrode layer, and the second charge generation layer is disposed between the second electrode layer and the second light-emitting layer. Thus, a first sub-pixel is formed by sequentially arranging a first electrode layer, a first light-emitting layer, a first charge generation layer, a second electrode layer, a second charge generation layer, a second light-emitting layer, and a third electrode layer, wherein the first charge generation layer forms a charge generation unit of the first light-emitting layer, and the second charge generation layer forms a charge generation unit of the second light-emitting layer.

[0019] In one possible implementation of the first aspect, the second electrode layer partially extends into the first charge generation layer. This serves to block charge diffusion, shorten the charge transport distance, reduce charge loss during transport, and thus improve charge transport efficiency.

[0020] In one possible implementation of the first aspect, the second electrode layer extends into the second charge generation layer. This serves to block charge diffusion, shorten the charge transport distance, reduce charge loss during transport, and thus improve charge transport efficiency.

[0021] In one possible implementation of the first aspect, the second electrode layer extends into both the first and second charge generation layers. This serves to block charge diffusion, shorten the charge transport distance, reduce charge loss during transport, and thus improve charge transport efficiency.

[0022] In one possible implementation of the first aspect, the first color sub-pixel includes a second sub-pixel and a third sub-pixel. The second sub-pixel includes a first emissive layer, and the third sub-pixel includes a second emissive layer. Thus, when the first emissive layer of the second sub-pixel is energized and emits light, and the second emissive layer of the third sub-pixel is not emitting light, the display panel can obtain a color gamut display corresponding to the color gamut standard of the first emissive layer. When the second emissive layer of the third sub-pixel is energized and emits light, and the first emissive layer of the second sub-pixel is not emitting light, the display panel can obtain a color gamut display corresponding to the color gamut standard of the second emissive layer.

[0023] In one possible implementation of the first aspect, the first color sub-pixel has a fourth display state and a fifth display state. When the first color sub-pixel is in the fourth display state, the first emissive layer in the second sub-pixel is energized; when the first color sub-pixel is in the fifth display state, the second emissive layer in the third sub-pixel is energized. Since the color gamut areas of the first and second emissive layers are different, the fourth and fifth display states correspond to a high color gamut mode and a low-power mode, respectively. Users can select between the third and fourth display states for the first color sub-pixel; for example, using a high-definition mode to obtain low color gamut display and using a low-power mode to obtain energy savings.

[0024] In one possible implementation of the first aspect, the first color sub-pixel also has a sixth display state. When the first color sub-pixel is in the sixth display state, the first light-emitting layer in the first sub-pixel is powered on and emits light, and the second light-emitting layer in the second sub-pixel is powered on and emits light. In this way, all the first color sub-pixels can be displayed completely, thereby improving the screen resolution.

[0025] In one possible implementation of the first aspect, the pixel density of the sub-pixel is greater than or equal to 650ppi. In this way, when the second or third sub-pixel works alone, at least one of them can form a pixel density greater than 325PPi, avoiding the phenomenon of unclear image caused by the low pixel density of the display panel in the fourth or fifth display state.

[0026] In one possible implementation of the first aspect, the second and third sub-pixels are spaced apart along a first direction. This results in a uniform, alternating distribution of high and low pixel values ​​for the first color sub-pixels along the first direction.

[0027] In one possible implementation of the first aspect, the second sub-pixel and the third sub-pixel are spaced apart along the second direction, and the first direction is perpendicular to the second direction, so that the first color sub-pixel forms an alternating and uniform distribution of high pixels and low pixels in the second direction.

[0028] In one possible implementation of the first aspect, the second and third sub-pixels are spaced apart along a first direction. Furthermore, the second and third sub-pixels are spaced apart along a second direction, with the first and second directions perpendicular to each other. In this way, the first color sub-pixels form an alternating and uniform distribution of high and low pixel counts along both the first and second directions. When the user selects to display the first color sub-pixels in a third or fourth display state, the number of sub-pixels emitting the first color is the same and evenly distributed (i.e., the number of second and third sub-pixels is equal), resulting in a smoother and more uniform image.

[0029] Secondly, this application provides a display module, including a cover plate and a display panel, wherein the display panel is the display panel of any of the above embodiments, and the cover plate is disposed on the display panel.

[0030] In one possible implementation of the second aspect, the display panel includes a substrate and a pixel layer and an encapsulation layer stacked on one side of the substrate. The pixel layer, as the main light-emitting film layer of the display panel, can generate light, such as red, green and blue primary colors, forming a three-primary-color light mode (RGB color model, or RGB mode for short), thereby constituting colors and realizing the display of the image on the display module.

[0031] In one possible implementation of the second aspect, the pixel layer includes multiple sub-pixels, a pixel definition layer, and conductive isolation pillars.

[0032] Thirdly, this application provides an electronic device, including a housing and a display module, wherein the display module is the display module of the above embodiment, and the display module is fixed to the housing.

[0033] In one possible implementation of the third aspect, the housing includes a back cover and a frame, with the frame fixed to the back cover and the display module fixed to the frame.

[0034] The technical effects of any of the design methods in the second to third aspects can be found in the technical effects of different design methods in the first aspect, and will not be repeated here. Attached Figure Description

[0035] Figure 1 Perspective views of electronic devices provided in some embodiments of this application;

[0036] Figure 2 for Figure 1 An exploded view of the electronic device shown;

[0037] Figure 3 A schematic diagram of the planar distribution structure of sub-pixels of a display panel provided in some embodiments of this application;

[0038] Figure 4 for Figure 3 The diagram shows a cross-sectional view of the display panel.

[0039] Figure 5 for Figure 4 A schematic diagram of the cross-sectional structure of a sub-pixel in the image;

[0040] Figure 6 A comparison diagram of the color gamut area of ​​the three color gamut standards provided in some embodiments of this application in the CTE chromaticity diagram;

[0041] Figure 7 A schematic diagram of the planar distribution structure of sub-pixels of a display panel provided in some embodiments of this application;

[0042] Figure 8 for Figure 7 A schematic diagram of the BB cross-sectional structure of the display panel;

[0043] Figure 9 for Figure 8 The power consumption gain shown is plotted in the CIE chromaticity diagram when the display panel includes a first light-emitting layer and a second light-emitting layer.

[0044] Figure 10A schematic cross-sectional view of a display panel including a first sub-pixel, provided for some embodiments of this application;

[0045] Figure 11 This is a schematic diagram of a partial vapor deposition process for the first sub-pixel provided in some embodiments of this application;

[0046] Figure 12 for Figure 10 A schematic cross-sectional structure of the second electrode layer, the first charge generation layer, and the second charge generation layer;

[0047] Figure 13 A partial cross-sectional structural schematic diagram of a display panel provided in other embodiments of this application;

[0048] Figure 14 for Figure 13 A schematic diagram of the local cross-sectional structure of the second sub-pixel;

[0049] Figure 15 for Figure 13 A schematic diagram of the local structure of the third sub-pixel;

[0050] Figure 16 for Figure 13 The diagram shows the planar distribution structure of the sub-pixels of the display panel.

[0051] Figure label:

[0052] 1000. Electronic devices;

[0053] 100A, Display Module;

[0054] 100. Display panel;

[0055] 110, Sub-pixel; 110a, Emitting layer; 110b, Cathode layer; 110c, Anode layer; 120, Pixel definition layer; 130, Conductive isolation pillar; 131, Conductive part; 132, Insulating part; 1321, Pillar; 1322, Cap body; 130a, First conductive isolation pillar; 130b, Second conductive isolation pillar;

[0056] 111, First color sub-pixel; 111a, First sub-pixel; N1, First electrode layer; N2, Second electrode layer; N3, Third electrode layer; N4, First charge generation layer; N5, Second charge generation layer; 111b, Second sub-pixel; 111c, Third sub-pixel; 1111, First light-emitting layer; 1112, Second light-emitting layer; 112, Second color sub-pixel; 113, Third color sub-pixel;

[0057] 200. Translucent cover plate;

[0058] 300. Housing; 310. Back cover; 320. Mid-frame; 321. Mid-plate; 3211. Battery mounting slot; 322. Frame;

[0059] 400. Circuit board assembly; 410. Main circuit board; 420. Sub-circuit board; 500. Battery;

[0060] L1, first tilt direction; L2, second tilt direction; L3, first direction; L4, second direction. Detailed Implementation

[0061] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0062] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0063] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0064] In the description of the embodiments of this application, "and / or" is merely a way of describing the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects before and after it are in an "or" relationship.

[0065] In the embodiments of this application, directional terms such as "outer" may be defined relative to the orientation in which the components are schematically placed in the accompanying drawings. It should be understood that these directional terms can be relative concepts, used for relative description and clarification, and can change accordingly depending on the orientation in which the components are placed in the accompanying drawings.

[0066] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, "linking" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. "Fixed connection" refers to a connection where the relative positional relationship remains unchanged after the connection.

[0067] In the description of embodiments of this application, the terms "vertical" and "parallel" include the described situation and situations similar to the described situation, the range of which is within an acceptable deviation range, wherein the acceptable deviation range is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximately parallelism, wherein the acceptable deviation range for approximately parallelism may be, for example, within 5°, 8°, or 10°; "vertical" includes absolute verticalism and approximately verticalism, wherein the acceptable deviation range for approximately verticalism may also be, for example, within 5°, 8°, or 10°.

[0068] This application provides an electronic device, which may include, but is not limited to, mobile or fixed terminal devices with display panels such as mobile phones, tablet computers, laptops, ultra-mobile personal computers (UMPCs), handheld computers, touch screen TVs, walkie-talkies, netbooks, point-of-sale (POS) machines, personal digital assistants (PDAs), wearable devices, virtual reality devices, wireless USB flash drives, portable music players, radios, televisions, audio equipment, headphones, glasses, in-vehicle equipment, dashcams, and security equipment.

[0069] Please see Figure 1 and Figure 2 , Figure 1 A perspective view of an electronic device 1000 provided in some embodiments of this application. Figure 2 for Figure 1 The diagram shows an exploded view of the electronic device 1000. In this embodiment, the electronic device 1000 is described as a candybar phone. In other embodiments, the electronic device 1000 may also be a foldable phone, which should not be construed as a limitation on the embodiments of this application.

[0070] Specifically, the electronic device 1000 may include a display module 100A, a housing 300, a circuit board assembly 400, and a battery 500. The circuit board assembly 400 and the battery 500 are located inside the electronic device 1000, therefore... Figure 1 The outlines of the circuit board assembly 400 and the battery 500 are shown in dashed lines.

[0071] It should be noted that, Figure 1 , Figure 2 The accompanying drawings below only schematically illustrate some components included in the electronic device 1000; the actual shape, size, location, and construction of these components are not subject to change. Figure 1 , Figure 2 And the limitations of the figures below.

[0072] exist Figure 1 and Figure 2 In the illustrated embodiment, the electronic device 1000 is in the shape of a rectangular plate. For ease of description in the following embodiments, an XYZ coordinate system is established. Specifically, the width direction of the electronic device 1000 is defined as the X-axis, the length direction as the Y-axis, and the thickness direction as the Z-axis; the X, Y, and Z axes are perpendicular to each other. It is understood that the coordinate system setting of the electronic device 1000 can be flexibly configured according to actual needs and is not specifically limited here. In other embodiments, the shape of the electronic device 1000 may also be a square plate, a rhombus plate, a circular plate, an elliptical plate, an oblong plate, a triangular plate, or an irregularly shaped plate, etc.

[0073] The housing 300 forms the outer casing of the electronic device 1000. The housing 300 is used to protect the internal electronic components of the electronic device 1000. (See also...) Figure 1 and Figure 2 The housing 300 includes a back cover 310 and a frame 322. The back cover 310 is plate-shaped. For example, the back cover 310 is a rectangular plate. The frame 322 is fixed to the back cover 310 and is arranged around the edge of the back cover 310. For example, the frame 322 can be fixedly connected to the back cover 310 by adhesive. The frame 322 can also be integrally formed with the back cover 310, i.e., the frame 322 and the back cover 310 are a single structure. This results in a higher connection strength between the frame 322 and the back cover 310. The material of the back cover 310 includes, but is not limited to, metal, ceramic, plastic, and glass. To achieve a thinner and lighter electronic device 1000 while ensuring the structural strength of the back cover 310, the material of the back cover 310 can be metal. The material of the frame 322 includes, but is not limited to, metal, ceramic, plastic, and glass. The material of the frame 322 can be the same as, or different from, the material of the back cover 310.

[0074] In some embodiments, please refer to Figure 2 The housing 300 also includes a middle plate 321. The middle plate 321 is fixed to the inner surface of the frame 322 around its perimeter. Exemplarily, the middle plate 321 can be fixed to the frame 322 by welding, threaded connection, snap-fit, or adhesive connection. The middle plate 321 can also be integrally formed with the frame 322, and the structure formed by the frame 322 and the middle plate 321 can also be called the middle frame 320. The material of the middle plate 321 includes, but is not limited to, metal, ceramic, plastic, and glass. The material of the middle plate 321 can be the same as that of the back cover 310, or it can be different. The middle plate 321 serves as the structural "skeleton" of the electronic device 1000, and the circuit board assembly 400 can be fixed to the side surface of the middle plate 321 facing the back cover 310 by threaded connection, snap-fit, welding, or other means. In some other embodiments, the electronic device 1000 may not include the middle plate 321.

[0075] In some embodiments, the display module 100A is fixed to the frame 322. Specifically, the display module 100A can be fixed to the frame 322 by adhesive bonding. The display module 100A, the back cover 310, and the frame 322 form an internal receiving space of the electronic device 1000. This internal receiving space houses the circuit board assembly 400 and the battery 500.

[0076] Please see Figure 1 and Figure 2 The circuit board assembly 400 includes a main circuit board 410 and a secondary circuit board 420. The secondary circuit board 420 and the main circuit board 410 are electrically connected via a connection structure (not shown) to enable data and signal transmission between the secondary circuit board 420 and the main circuit board 410. The connection structure can be a flexible printed circuit board (FPC). In other embodiments, the connection structure can also be a wire or enameled wire.

[0077] The main circuit board 410 is used to integrate a control chip. The control chip may be, for example, an application processor (AP), double data rate synchronous dynamic random access memory (DDR), or universal flash storage (UFS). In some embodiments, the main circuit board 410 is electrically connected to the display module 100A, and the main circuit board 410 is used to control the display module 100A to display images or videos.

[0078] The main circuit board 410 can be a rigid circuit board, a flexible circuit board, or a rigid-flex circuit board.

[0079] The secondary circuit board 420 is used to integrate electronic components such as the RF front-end of antennas (e.g., 5G antennas) and universal serial bus (USB) devices. The secondary circuit board 420 can be a rigid circuit board, a flexible circuit board, or a combination of rigid and flexible circuit boards.

[0080] Please continue reading. Figure 2 The battery 500 is located between the main circuit board 410 and the sub-circuit board 420. The battery 500 is used to provide power to electronic devices such as the display module 100A, the main circuit board 410, and the sub-circuit board 420 within the electronic device 1000. In some embodiments, the surface of the middle plate 321 facing the back cover 310 is provided with a battery mounting groove 3211, and the battery 500 is installed in the battery mounting groove 3211.

[0081] The internal storage space of the electronic device 1000 may also be provided with one or more optical functional devices. These optical functional devices need to use light passing through the display module 100A to perform their functions. The optical functional devices may be located within the film layer of the display module 100A, or they may be located below the display module 100A (on the side of the display module 100A facing the internal storage space of the electronic device 1000).

[0082] For example, the optical functional device can be an ambient light sensor (ALS). The ambient light sensor can detect the ambient light passing through the display module 100A, thereby sensing the light conditions of the external environment around the electronic device 1000 and adjusting the display of the display module 100A.

[0083] The optical functional device can also be a fingerprint sensor on display (FOD). Light reflected back from a finger or other object on the display module 100A can be transmitted through the display module 100A to the fingerprint sensor, which can then detect the fingerprint based on the reflected light. Of course, in some other examples, the optical functional device can also be other types of photosensitive devices.

[0084] It should be noted that the structures illustrated in the embodiments of this application do not constitute a specific limitation on the electronic device 1000. In other embodiments of this application, the electronic device 1000 may include more or fewer components than illustrated, or combine some components, or split some components, or arrange the components differently. For example, the electronic device 1000 may also include communication modules, sensors, microphones, speakers, flashlights, and other devices.

[0085] Please see Figure 2The display module 100A includes a display panel 100 and a light-transmitting cover 200. The light-transmitting cover 200 is stacked on top of the display panel 100. Specifically, the light-transmitting cover 200 and the display panel 100 can be fixedly connected by means of adhesive bonding or other methods. The light-transmitting cover 200 is mainly used to protect the display panel 100 and prevent dust. The material of the light-transmitting cover 200 includes, but is not limited to, glass, ceramic, and plastic.

[0086] The display panel 100 can be a flexible display or a rigid display. For example, the display panel 100 can be an organic light-emitting diode (OLED) display, an active-matrix organic light-emitting diode (AMOLED) display, a mini organic light-emitting diode (MLED) display, a micro organic light-emitting diode (MOLED) display, a microorganic light-emitting diode (MOLED) display, a quantum dot light-emitting diode (QLED) display, etc. In this embodiment, an OLED display is used as an example for explanation.

[0087] For example, the display panel 100 includes a substrate and a pixel layer and an encapsulation layer stacked on one side of the substrate. The pixel layer, as the main light-emitting film layer of the display panel 100, can generate light, such as red, green and blue primary color light, which forms a three-primary-color light mode (RGB color model, abbreviated as RGB mode), thereby constituting color and realizing the display of the image on the display module 100A.

[0088] Please see Figure 3 , Figure 3 This is a schematic diagram of the planar distribution structure of sub-pixels 110 of a display panel 100 provided in some embodiments of this application. The pixel layer may include a plurality of arrayed sub-pixels 110, wherein... Figure 3 Each square represents at least one subpixel 110. See also Figure 4 , Figure 4 for Figure 3The schematic diagram of the AA cross-sectional structure of the display panel 100 shown illustrates that adjacent sub-pixels 110 are separated by pixel definition layers 120 to avoid crosstalk issues. Multiple sub-pixels 110 may include multiple red pixels, multiple green pixels, and multiple blue pixels. Red pixels are sub-pixels 110 that emit red light, green pixels are sub-pixels 110 that emit green light, and blue pixels are sub-pixels 110 that emit blue light. One red pixel, one green pixel, and one blue pixel can form a pixel unit. It can be understood that the display panel 100 includes multiple pixel units. A pixel unit, also called a pixel point or a pixel pixel, is the smallest unit that makes up a digital image. Each pixel unit has specific color and brightness information, and by controlling this information, different image effects can be presented on the display panel 100.

[0089] In some embodiments, please refer to Figure 5 , Figure 5 for Figure 4 The diagram shows a cross-sectional view of sub-pixel 110. Sub-pixel 110 includes a light-emitting layer 110a, a cathode layer 110b, and an anode layer 110c. The anode layer 110c, light-emitting layer 110a, and cathode layer 110b are stacked sequentially. The light-emitting layer 110a of sub-pixel 110 refers to an organic thin film layer in sub-pixel 110 capable of emitting the three primary colors of red (R), green (G), and blue (B). During manufacturing, the light-emitting layer 110a is typically precisely placed between the two electrode layers 110c and 110b through processes such as evaporation deposition. This sandwich structure ensures that current can flow uniformly through the light-emitting layer 110a, thereby achieving a uniform light emission effect. Under the action of the cathode layer 110b and the anode layer 110c, current passes through the light-emitting layer 110a, and the light-emitting material in the light-emitting layer 110a is excited and emits light. For example, the cathode layer 110b is mostly a light-transmitting layer, and the anode layer 110c is an opaque layer. The cathode layer 110b can be electrically connected to the power management chip of the electronic device 1000 to excite the sub-pixel 110 to emit light by inputting voltage.

[0090] Understandably, different types of sub-pixels 110 (which can emit different colors) require different materials and film layers for the light-emitting layer 110a. For example, the light-emitting material in the light-emitting layer 110a can be an organic light-emitting material or a quantum dot light-emitting material.

[0091] In the above embodiments, the display panel 100 can form different color gamut devices by using different light-emitting materials of the light-emitting layer 110a of the sub-pixel 110, so as to cover different color gamut areas in the CIE chromaticity diagram. When the color gamut area is large, a display panel 100 that satisfies the high color gamut is formed, and when the color gamut area is small, a display panel 100 that satisfies the low color gamut is formed.

[0092] Color gamut, also known as color space, refers to the range of colors that can be represented by a certain colorimetric model, or the range of colors that a specific electronic device can display. Gamut is a mathematical concept indicating that color has a certain range. Color gamut is usually represented by a triangle formed by connecting three points: red (R), green (G), and blue (B). The area enclosed by the triangle is called the color gamut area. Understandably, a larger color gamut area indicates a wider (or higher) color gamut.

[0093] Common color gamut standards include sRGB, Adobe RGB, DCI-P3, NTSC, and BT2020. sRGB is primarily used in internet content and consumer-grade display devices, while Adobe RGB is widely used in professional photography, graphic design, and printing. The DCI-P3 color gamut is mainly used in digital cinema, offering higher color saturation and contrast. The NTSC color gamut is primarily used in television displays to improve the color presentation of broadcast television systems, and the BT2020 color gamut is widely used in high-definition televisions, providing users with a more realistic and richer color experience.

[0094] The International Commission on Illumination (CIE) developed the CIE-xy chromaticity diagram in 1931. The visible spectrum in nature constitutes the largest color gamut space, encompassing all colors visible to the human eye, and is represented using the CIE color space. This diagram accurately and intuitively represents the range of color gamuts, including but not limited to sRGB, Adobe RGB, DCI-P3, NTSC, and BT2020.

[0095] In some embodiments, please refer to Figure 6 , Figure 6 This document presents a comparison of the color gamut areas of three color gamut standards in the CIE colorimetric diagram, as provided in some embodiments of this application. The CIE colorimetric diagram uses x as the horizontal axis and y as the vertical axis. The coordinates in the CIE colorimetric diagram are represented by the values ​​of x and y. The x-axis chromaticity coordinate corresponds to the proportion of the red primary color, and the y-axis chromaticity coordinate corresponds to the proportion of the green primary color. By consulting the color coordinate diagram or using a color coordinate conversion tool, the corresponding color can be determined based on the given CIE-x and CIE-y values. A chromaticity diagram is a representation of color contrast; it is a two-dimensional representation of the spectrum visible to the human eye, based on the three primary colors. In digital image processing, the color information of a pixel unit can correspond to a point in the color gamut diagram. For example, when the color of a pixel unit matches a point in the color gamut diagram, the color of that pixel unit can be considered to satisfy that color gamut standard.

[0096] Figure 6 The image shows three color gamuts: BT2020, DCI-P3, and sRGB. Figure 6 As can be seen, the BT2020 color gamut area is larger than the DCI-P3 color gamut area, causing the vertex of the DCI-P3 color gamut to be within the BT2020 color gamut. Similarly, the DCI-P3 color gamut area is larger than the sRGB color gamut area, causing the vertex of the sRGB color gamut to be within the DCI-P3 color gamut. Thus, the BT2020 color gamut forms a high color gamut relative to the DCI-P3 color gamut, at which point the DCI-P3 color gamut is a low color gamut. Conversely, the DCI-P3 color gamut forms a high color gamut relative to the sRGB color gamut, at which point the sRGB color gamut is a low color gamut.

[0097] Referring to Table 1 below, which provides CIE standard coordinates and gamut area comparison data for the three vertices (R (red), G (green), and B (blue)) of the three color gamuts mentioned above, it can be understood that the three vertices of each color gamut represent R, G, and B. To distinguish the vertices of different color gamuts, in... Figure 6 In the sRGB color gamut, the three vertices are R0, G0, and B0; in the DCI-P3 color gamut, the three vertices are R1, G1, and B1; and in the BT2020 color gamut, the three vertices are R2, G2, and B2.

[0098] Combination Figure 6 As shown in Table 1, taking the sRGB color gamut area as 100% as a baseline, the DCI-P3 color gamut covers the sRGB color gamut, and its area is 135.65% of the sRGB color gamut area. Similarly, the BT2020 color gamut also covers the sRGB color gamut, and its area is 135.65% of the sRGB color gamut area. Compared to the sRGB color gamut, the DCI-P3 color gamut has a wider range of red and green colors, and the three vertices of the sRGB color gamut are located within the DCI-P3 color gamut. (The last sentence is a repetition of the previous one and can be omitted.)

[0099] Table 1

[0100]

[0101] In an electronic device 1000 that meets the sRGB color gamut, if this electronic device 1000 is used to display the sRGB color gamut, then all colors within the sRGB color gamut area can be displayed normally. In other embodiments, in an electronic device 1000 that meets a high color gamut, if this electronic device 1000 is used to display a low color gamut, such as using a display panel 100 that meets the DCI-P3 color gamut to display the sRGB color gamut, then color matching is required using a DCI-P3 color gamut device in order to display the points within the sRGB color gamut.

[0102] The following is a detailed explanation of the color matching principle of high color gamut versus low color gamut:

[0103] Please continue reading. Figure 6 Taking the display of point G0 as an example, if R1, G1, and B1 are used to match the color of point G0, the color matching should be done with a higher brightness of point G1 and a lower brightness of points R1 and B1 in order to display G0.

[0104] Specifically, draw lines from point G0 to G1, R1, and B1 respectively, forming line segments t1, t2, and t3. The lengths of line segments t1, t2, and t3 determine the color matching ability of G1, R1, and B1, respectively; the shorter the length, the weaker the color matching ability, and the greater the brightness required for color matching. From Figure 6 As can be seen, the length of t1 is less than the lengths of t2 and t3. Therefore, when matching the color of point G0, the brightness of G1 is the main factor, and the brightness of points R1 and B1 is the auxiliary factor. That is, the luminous efficiency of point G1 is high, while the luminous efficiency of points R1 and B1 is low.

[0105] In some embodiments, please refer to Table 2 below, Table 2 is... Figure 5 The CIE coordinates of R0, G0, B0, R1, G1, and B1 in the emitting layer 110a of sub-pixel 110 shown satisfy both the sRGB and DCI-P3 color gamuts. When point R within a color gamut is illuminated alone, the luminous efficacy is 79.8. For example, when R0 is illuminated alone and G0 and B0 are off, the luminous efficacy of R0 is 79.8. When point G within a color gamut is illuminated alone, the luminous efficacy is 79.8. For example, when G0 is illuminated alone and R0 and B0 are off, the luminous efficacy of G0 is 181. When point B within a color gamut is illuminated alone, the luminous efficacy is 79.8. For example, when B0 is illuminated alone and R0 and G0 are off, the luminous efficacy of B0 is 8.

[0106] Table 2

[0107]

[0108] Please refer to the following: Figure 6 , Figure 6The document also points out seven points a, b, c, d, e, f, and w within the sRGB color gamut. Based on the display of ten points R0, G0, B0, a, b, c, d, e, f, and w, please refer to Table 3 below. Table 3 shows the CIE coordinate values ​​of the ten points R0, G0, B0, a, b, c, d, e, f, and w, as well as the luminous efficiency of displaying these ten points using the sRGB color gamut. Table 3 also shows the luminous efficiency of displaying the ten points R0, G0, B0, a, b, c, d, e, f, and w using the DCI-P3 color gamut.

[0109] Table 3

[0110]

[0111] From Table 3, we can conclude that Figure 6 Of the ten points in the image, most of the points (w, G0, B0, a, b, d, e, f) have higher luminous efficiency when displayed using the sRGB color gamut than when displayed using the DCI-P3 color gamut. In other words, displaying a low color gamut (sRGB color gamut) using a high color gamut (DCI-P3) color scheme results in significantly lower luminous efficiency than displaying a low color gamut using a low color gamut.

[0112] For example, taking the display of point G0 as an example, if the sRGB color gamut is used to obtain G0, then point G0 can achieve a luminous efficacy of 181. If the DCI-P3 color gamut is used for color matching, since the luminous efficiencies of points R1 and B1 are lower, at 79.8 and 8 respectively, the final G0 point obtained by matching R1, G1, and B1 can only achieve a luminous efficacy of less than 181. For example, the luminous efficacy in this case could be 147.8. The lower the luminous efficacy, the higher the power consumption waste.

[0113] Similarly, please continue reading Figure 6 , Figure 6 The image also shows the three vertices of the BT2020 color gamut: R2, G2, and B2.

[0114] Based on the display of ten points R0, G0, B0, a, b, c, d, e, f, and w, please refer to Table 4 below. Table 4 shows the CIE coordinate values ​​of the ten points R0, G0, B0, a, b, c, d, e, f, and w, as well as the luminous efficiency of displaying the above ten points R0, G0, B0, a, b, c, d, e, f, and w using the sRGB color gamut, and the luminous efficiency of displaying the ten points R0, G0, B0, a, b, c, d, e, f, and w using the BT2020 color gamut.

[0115] Table 4

[0116]

[0117] From Table 4, we can conclude that Figure 6 Of the ten points in the image, most of the points (w, G0, B0, a, b, d, e, f, K) have higher luminous efficiency when displayed using the sRGB color gamut than when displayed using the BT2020 color gamut. In other words, displaying a low color gamut (sRGB color gamut) using a high color gamut (BT2020) color scheme results in significantly lower luminous efficiency than displaying a low color gamut using a low color gamut.

[0118] Furthermore, in Figure 6 As shown in the diagram, if a region far from point B0 needs to emit light, the luminous efficiency of point B0 is relatively low. Therefore, in the CIE chromaticity diagram, the further away from point B0 in the color gamut is from color matching, the greater the power loss and waste caused by lighting up point B0 for color matching.

[0119] In summary, when the color gamut area of ​​the display panel 100 is large, forming a high color gamut, users can obtain more vivid images through the display panel 100. However, if the user needs to use the display panel 100 to display a low color gamut, the display panel 100 needs to use its own high color gamut devices to match the colors in order to display the low color gamut, resulting in low luminous efficiency and increased energy consumption. From the user's perspective, the user will consume more power when using the electronic device 1000.

[0120] Therefore, in order to solve the problem of high power consumption in the existing display panel 100, please refer to [the relevant documentation / reference]. Figure 7 and Figure 8 , Figure 7 This is a schematic diagram of the planar distribution structure of the sub-pixels 110 of the display panel 100 provided in some embodiments of this application. Figure 8 for Figure 7 A schematic diagram of the BB cross-sectional structure of the display panel 100 is shown. The display panel 100 includes multiple sub-pixels 110 and a pixel definition layer 120. The multiple sub-pixels 110 are arranged in a matrix, and adjacent sub-pixels 110 are separated by pixel definition layers 120. Figure 8 The pixel definition layer 120 in the display panel 100 of the illustrated embodiment, and Figure 4 The pixel definition layer 120 in the display panel 100 of the illustrated embodiment has the same structure.

[0121] Matrix arrangement can refer to multiple sub-pixels 110 in Figure 1The arrangement of sub-pixels 110 on the plane formed by the X and Y directions, in some embodiments, can be a triangular or rectangular matrix arrangement. In other embodiments, the sub-pixels 110 can also be arranged in other matrix shapes. The specific arrangement is not limited in this application. In some embodiments, to improve the resolution of the display panel 100, the pixel density of the sub-pixels 110 can be set higher. For example, the pixel density of the sub-pixels 110 can be greater than or equal to 650 ppi. Thus, the display panel 100 of this application can achieve higher resolution and more vibrant color display through high pixel density.

[0122] In some embodiments, sub-pixel 110 includes a first color sub-pixel 111, the first color sub-pixel 111 includes a first light-emitting layer 1111 and a second light-emitting layer 1112, the color gamut area of ​​the first light-emitting layer 1111 is different from the color gamut area of ​​the second light-emitting layer 1112, the first color sub-pixel 111 may include one sub-pixel 110 or multiple sub-pixels 110, and multiple sub-pixels 110 can all emit light of the same color.

[0123] Understandably, sub-pixel 110 also includes a second color sub-pixel 112 and a third color sub-pixel 113. Similarly, the second color sub-pixel 112 may include one or more sub-pixels 110, and the third color sub-pixel 113 may include one or more sub-pixels 110. The emission color of the first color sub-pixel 111 can be any one of green, red, or blue. The first color sub-pixel 111, the second color sub-pixel 112, and the third color sub-pixel 113 emit different primary colors of green, red, or blue. In this case, one first color sub-pixel 111, one second color sub-pixel 112, and one third color sub-pixel 113 form a pixel unit.

[0124] The first light-emitting layer 1111 forms a first color gamut device, which can meet the first color gamut standard. The second light-emitting layer 1112 forms a second color gamut device, which can meet the second color gamut standard. Since the color gamut area of ​​the first color gamut standard is different from that of the second color gamut standard, one of the first color gamut device and the second color gamut device forms a high color gamut device, and the other forms a low color gamut device. When either the high color gamut device or the low color gamut device is working, the first color sub-pixel 111 can emit light.

[0125] Thus, the display panel 100 of this application embodiment integrates two color gamut devices with different color gamut areas in the same display panel 100, forming a high color gamut device and a low color gamut device respectively. In actual use, different color gamut devices (first light-emitting layer 1111 and second light-emitting layer 1112) can be selected to work according to actual needs, so that the display panel 100 can display different color gamuts through the corresponding color gamut devices.

[0126] Specifically, in some embodiments, the display panel 100 can use high color gamut devices to form a high color gamut display effect with a wide color gamut range, large color gamut area, and richer colors, thereby enriching the user experience. In this case, the high color gamut devices can display low color gamut through color matching, resulting in significant power consumption waste. In other embodiments, referring to Tables 2 and 3 above, the display panel 100 can use low color gamut devices to form a low color gamut display effect with a small color gamut range and small color gamut area, improving luminous efficiency and reducing power consumption waste. This avoids the problem of high energy consumption caused by a single display panel 100 only providing high color gamut devices, which can only achieve low color gamut display through color matching.

[0127] In some embodiments, the color gamut standard of one of the first light-emitting layer 1111 and the second light-emitting layer 1112 is sRGB. For example, the first light-emitting layer 1111 satisfies the sRGB color gamut and forms a low color gamut device. The color gamut standard of the second light-emitting layer 1112 can be a high color gamut standard that can completely cover sRGB in the CIE chromaticity diagram, thereby enabling the display panel 100 of this application to support both high and low color gamut displays in hardware.

[0128] Compared to Figures 3 to 5 The sub-pixels 110 of the display panel 100 in the illustrated embodiment, when displaying a low color gamut using a low color gamut device (one of the first light-emitting layer 1111 and the second light-emitting layer 1112), achieve higher luminous efficiency, which helps reduce power consumption. Conversely, when displaying a low color gamut using a high color gamut device, better colors are displayed on the display panel 100. Thus, from the user's perspective, the display panel 100 provides multiple options, without forcing the use of a high color gamut device to display a low color gamut. Users can choose to use a low color gamut device to display a low color gamut on the display panel 100, thereby improving luminous efficiency, reducing energy consumption, and making the electronic device 1000 more energy-efficient, achieving energy-saving design.

[0129] In some embodiments, the color gamut standard of the other of the first light-emitting layer 1111 and the second light-emitting layer 1112 is one of DCI-P3, BT2020, Adobe RGB, and NTSC. DCI-P3, BT2020, Adobe RGB, and NTSC can all be completely covered and partially exceed sRGB in the CTE chromaticity diagram. That is, the color gamut area of ​​DCI-P3, BT2020, Adobe RGB, and NTSC in the CTE chromaticity diagram is larger than the color gamut area of ​​sRGB.

[0130] In some embodiments, please refer to Table 5 below. Table 5 shows the display when one of the first light-emitting layer 1111 and the second light-emitting layer 1112 is an sRGB device and the other is a DCI-P3 device or a BT2020 device. Figure 6 The power consumption gains obtained from the ten points R0, G0, B0, a, b, c, d, e, f, and w in the sRGB color gamut:

[0131] Table 5

[0132]

[0133] Power consumption gain refers to the benefit gained by reducing the power consumption of an electronic device by 1000 ohms. Power consumption gain = (Power consumption before optimization - Power consumption after optimization) / Power consumption before optimization × 100%. A light source with high luminous efficiency can emit more light energy at the same input power, thus reducing power consumption to some extent. In other words, the higher the luminous efficiency, the lower the power consumption, and the greater the power consumption gain. Specifically, refer to Tables 3, 4, and 5. Figure 6 The power consumption gain obtained by the display panel 100 can be expressed as = (luminous efficiency of low color gamut - luminous efficiency of high color gamut) / luminous efficiency of low color gamut × 100%. Furthermore, in the CIE chromaticity diagram, the corresponding power consumption gain value can be calculated for each point in the diagram.

[0134] Referring to Tables 3 and 5, when the first light-emitting layer 1111 and the second light-emitting layer 1112 are sRGB devices and DCI-P3 devices respectively, the user uses an sRGB device for display. Figure 6 The power consumption gain obtained from the ten points R0, G0, B0, a, b, c, d, e, f, w in the sRGB color gamut is calculated as: (luminous efficiency of the DCI-P3 color gamut - luminous efficiency of the sRGB color gamut) / luminous efficiency of the sRGB color gamut × 100%. Combining Tables 4 and 5, it can be concluded that when the first luminous layer 1111 and the second luminous layer 1112 are BT2020 devices and DCI-P3 devices respectively, the power consumption gain for the user displaying an sRGB device is... Figure 6The power consumption gain obtained from the ten points R0, G0, B0, a, b, c, d, e, f, w in the sRGB color gamut = (luminous efficiency of BT2020 color gamut - luminous efficiency of sRGB color gamut) / luminous efficiency of sRGB color gamut × 100%.

[0135] As can be seen from Table 4, taking G0 as an example, when the first light-emitting layer 1111 and the second light-emitting layer 1112 are sRGB devices and DCI-P3 devices, G0 can obtain a power consumption gain of 18.345%, and when the first light-emitting layer 1111 and the second light-emitting layer 1112 are BT2020 devices and DCI-P3 devices, G0 can obtain a power consumption gain of 22.237%.

[0136] Referring to Tables 3, 4, and 5 above, embodiments of this application establish a coordinate system using the x-axis and y-axis of the CIE chromaticity diagram, and simulate the distribution of power consumption gains in the CIE chromaticity diagram. Please refer to [link to relevant documentation]. Figure 9 , Figure 9 for Figure 8 When the display panel 100 shown includes a first light-emitting layer 1111 and a second light-emitting layer 1112, the power consumption gain is plotted in the CIE chromaticity diagram as follows: Figure 9 In the diagram, different shades of gray represent different colors of green; the darker the color, the greater the power consumption benefit.

[0137] Specifically, according to Figure 9 The contour plot shown allows us to derive a fitted power consumption benefit equation: Power Consumption Benefit = (0.02094 - 0.3249CIE-x + 0.4249CIE-y) × 100%. The power consumption benefit is inversely proportional to CIE-x and directly proportional to CIE-y. In other words, the greener the sub-pixel 110, the higher its luminous efficiency, the lower its power consumption, and the greater its power consumption benefit.

[0138] Therefore, in some embodiments, the light emission color of the first color sub-pixel 111 can be green. That is, the display panel 100 of this application has two types of first color sub-pixels 111 with green light emission color, thereby obtaining greater power consumption benefits in the area far away from point B0 (the area emitting green light), avoiding the situation where large energy loss is caused by the low color luminous efficiency of point B0, thereby reducing power consumption and increasing power consumption benefits.

[0139] In other embodiments, the emission color of the first color sub-pixel 111 may also be red, blue, etc., and this invention does not impose any limitations on it.

[0140] In the existing electronic device 1000, the colors of most images fall within the sRGB color gamut. However, in most images, there are fewer colors outside the sRGB color gamut. Therefore, in order to ensure display quality while achieving energy saving, for example, the color gamut standard of the first light-emitting layer 1111 can be sRGB, and the color gamut standard of the second light-emitting layer 1112 can be DCI-P3.

[0141] In some embodiments, please refer to Figure 10 , Figure 10 This is a cross-sectional structural diagram of a display panel 100 provided in some embodiments of this application, including a first sub-pixel 111a. The first light-emitting layer 1111 and the second light-emitting layer 1112 are located within the same first color sub-pixel 111. The first color sub-pixel 111 includes a first sub-pixel 111a. The first sub-pixel 111a includes a first light-emitting layer 1111 and a second light-emitting layer 1112 that are stacked and spaced apart. That is, only a sub-pixel 110 that simultaneously includes a first light-emitting layer 1111 and a second light-emitting layer 1112 that are stacked and spaced apart is a first sub-pixel 111a. When either the first light-emitting layer 1111 or the second light-emitting layer 1112 is powered on, the first sub-pixel 111a can emit light.

[0142] In the multiple sub-pixels 110, each sub-pixel 110 can become a first sub-pixel 111a. For example, a first light-emitting layer 1111 and a second light-emitting layer 1112 can be provided in each sub-pixel 110 with green light emission color, so that all sub-pixels 110 with green light emission color form the first sub-pixel 111a. Thus, different color gamut devices are provided in the same sub-pixel 110 through the first light-emitting layer 1111 and the second light-emitting layer 1112, so as to improve the power consumption benefit of the display panel 100 and reduce energy consumption.

[0143] In some embodiments, the first sub-pixel 111a has a first display state. When the first sub-pixel 111a is in the first display state, the first light-emitting layer 1111 is energized. The first light-emitting layer 1111 being energized means that current flows through the first light-emitting layer 1111. At this time, the first light-emitting layer 1111 emits light under the excitation of the current. It can be understood that at this time, no current flows through the second light-emitting layer 1112, that is, the second light-emitting layer 1112 does not emit light. In this way, the display panel 100 can obtain the color gamut display of the color gamut standard corresponding to the first light-emitting layer 1111.

[0144] The first sub-pixel 111a also has a second display state. When the second sub-pixel 111b is in the second display state, the second light-emitting layer 1112 is powered on and emits light. At this time, the first light-emitting layer 1111 emits light. In this way, the display panel 100 can obtain the color gamut display of the color gamut standard corresponding to the second light-emitting layer 1112.

[0145] It is understandable that the color gamut area of ​​the first light-emitting layer 1111 is different from that of the second light-emitting layer 1112. Compared to each other, one forms a high color gamut and the other forms a low color gamut. In this way, the user can select whether the first sub-pixel 111a is in a first display state or a second display state. The first display state corresponds to a high-definition mode and the second display state corresponds to a low-power mode. The user can obtain more vivid colors with a high color gamut by selecting the high-definition mode and obtain energy savings by selecting the low-power mode.

[0146] In some embodiments, please continue reading Figure 10 The first sub-pixel 111a includes a first electrode layer N1, a second electrode layer N2, and a third electrode layer N3. The first electrode layer N1 and the second electrode layer N2 are located on opposite sides of the first light-emitting layer 1111, and the second electrode layer N2 and the third electrode layer N3 are located on opposite sides of the second light-emitting layer 1112. Thus, the first sub-pixel 111a forms an arrangement of the first electrode layer N1, the first light-emitting layer 1111, the second electrode layer N2, the second light-emitting layer 1112, and the third electrode layer N3. The first electrode layer N1 can be attached to the pixel definition layer 120.

[0147] The first electrode layer N1 and the second electrode layer N2 have opposite polarities, such that the first electrode layer N1 and the second electrode layer N2 form the anode and cathode of the first light-emitting layer 1111. For example, the first electrode layer N1 is the anode and the second electrode layer N2 is the cathode. The second electrode layer N2 and the third electrode layer N3 have opposite polarities, such that the second electrode layer N2 and the third electrode layer N3 form the anode and cathode of the second light-emitting layer 1112. For example, the second electrode layer N2 is the anode and the third electrode layer N3 is the cathode.

[0148] The first electrode layer N1 and the second electrode layer N2 can be reset synchronously. Similarly, the second electrode layer N2 and the third electrode layer N3 can also be reset synchronously. In this way, the first light-emitting layer 1111 and the second light-emitting layer 1112 share a second electrode layer N2. By controlling the positive and negative voltage on the second electrode layer N2, the first light-emitting layer 1111 and the second light-emitting layer 1112 can be controlled separately.

[0149] Specifically, when the first sub-pixel 111a is in the first display state, the first electrode layer N1 receives a positive voltage, the second electrode layer N2 receives a negative voltage, and the third electrode layer N3 receives no voltage. This creates a pressure difference between the first electrode layer N1 and the second electrode layer N2, causing current to flow only through the first light-emitting layer 1111, thus illuminating the first light-emitting layer 1111. When the first sub-pixel 111a is in the second display state, the first electrode layer N1 and the second electrode layer N2 receive the same positive voltage, while the third electrode layer N3 receives a negative voltage. There is no pressure difference between the first electrode layer N1 and the second electrode layer N2, meaning no current flows through them. A pressure difference is created between the second electrode layer N2 and the third electrode layer N3, causing current to flow only through the second light-emitting layer 1112, thus illuminating the second light-emitting layer 1112.

[0150] In some embodiments, the first sub-pixel 111a also has a third display state. When the first sub-pixel 111a is in the third display state, both the first light-emitting layer 1111 and the second light-emitting layer 1112 are powered on. That is, current flows through both the first light-emitting layer 1111 and the second light-emitting layer 1112, and the first light-emitting layer 1111 and the second light-emitting layer 1112 emit light together. At this time, since the high color gamut device and the low color gamut device work simultaneously to achieve dual light emission, the luminous efficiency is higher and the power consumption benefit is greater.

[0151] Please refer to Table 6 below, which shows a comparison of power consumption gains when the first sub-pixel 111a is in the first display state, the second display state, and the third display state, respectively:

[0152] Table 6

[0153]

[0154] As can be seen from Table 6 above, from the perspective of power consumption benefit, the third display state is greater than the second display state, which is greater than the first display state. That is, the display panel 100 of this application embodiment is more energy-efficient in the third display state.

[0155] In the actual electronic device 1000, three modes can be set in the mode settings, such as high color gamut mode, first low power mode and second low power mode, which correspond to the first display state, the second display state and the third display state respectively. This allows users to select to use high color gamut devices and / or low color gamut devices according to actual needs, thereby improving power consumption benefits.

[0156] In some embodiments, conductive isolation pillars 130 can also be used to connect the first electrode layer N1 and the second electrode layer N2. For examples, please refer to [reference needed]. Figure 7 and Figure 10The pixel layer includes conductive isolation pillars 130 capable of conducting electricity. The conductive isolation pillars 130 are disposed on the pixel definition layer 120, and each first sub-pixel 111a has conductive isolation pillars 130 on both opposite sides. For example, taking the first direction L3 as... Figure 2 In the X direction, each of the sub-pixels 110 arranged sequentially in the first direction L3 has a conductive isolation pillar 130. For example, in the first direction L3, there is a conductive isolation pillar 130 between green light pixels and blue light pixels, and between red light pixels and blue light pixels.

[0157] For details, please refer to Figure 10 Taking one of the first sub-pixels 111a as a reference, the two conductive isolation pillars 130 on either side of the first sub-pixel 111a are respectively the first conductive isolation pillar 130a and the second conductive isolation pillar 130b. Each first sub-pixel 111a is located between the first conductive isolation pillar 130a and the second conductive isolation pillar 130b, thereby forming a second electrode layer N2 electrically connected to the first conductive isolation pillar 130a, and a third electrode layer N3 electrically connected to the second conductive isolation pillar 130b, forming an electrical connection between the second electrode layer N2 and the third electrode layer N3 and the conductive isolation pillar 130. The first electrode layer N1 can be overlapped on the side of the pixel definition layer 120 facing away from the conductive isolation pillar 130. The conductive isolation pillar 130 can be electrically connected to a power management chip, thereby applying different voltages to the first electrode layer N1, the second electrode layer N2, and the third electrode layer N3 through the power management chip. This is understandable. Figure 10 In the diagram, the direction indicated by the arrow is the direction of current flow.

[0158] The conductive isolation pillar 130 can be made of a metal, such as copper, aluminum, or titanium. Of course, in some other examples, the conductive isolation pillar 130 can also be made of other metallic materials, or it can be made of a non-metallic material that is capable of conducting electricity.

[0159] Specifically, the conductive isolation post 130 can be in the shape of a cuboid, cylinder, trapezoidal cube, etc. It is understood that in the present application, in the scheme with conductive isolation post 130, each conductive isolation post 130 only overlaps one of the second electrode layer N2 and the third electrode layer N3. In some examples, the conductive isolation post 130 may include an insulating part 132 and a conductive part 131 connected together. The conductive part 131 may be located between the insulating part 132 and the pixel definition layer 120, and both ends of the conductive part 131 are fixed to the conductive part 131 and the pixel definition layer 120 respectively. The conductive part 131 is used to overlap with the second electrode layer N2 or the third electrode layer N3.

[0160] In some embodiments, the insulating portion 132 includes a pillar 1321 and a brim 1322. One end of the pillar 1321 is disposed on the pixel definition layer 120, and the other end is connected to the brim 1322. The conductive portion 131 surrounds the outer periphery of the pillar 1321. The orthographic projection of the brim 1322 on the reference plane completely covers and partially extends the orthographic projection of the conductive portion 131 on the reference plane. The reference plane may be... Figure 1 The plane formed by the X and Y directions of the electronic device 1000, i.e., at this time, the first light-emitting layer 1111 and the second light-emitting layer 1112 are stacked along the Z direction of the electronic device 1000. In this way, the size of the brim body 1322 is larger than that of the conductive part 131, which facilitates the overlap of the conductive part 131 of the second electrode layer N2 and the first conductive isolation pillar 130a, as well as the overlap of the conductive part 131 of the third electrode layer N3 and the second conductive isolation pillar 130b.

[0161] Specifically, in some embodiments, the fabrication process of various layers in the first sub-pixel 111a can be vapor deposition. For details, please refer to [link to relevant documentation]. Figure 11 , Figure 11 This is a schematic diagram of a partial vapor deposition process for the first sub-pixel 111a provided in some embodiments of this application. A first light-emitting layer 1111 and a second light-emitting layer 1112 are formed by vapor deposition along the Z direction. At this time, the conductive isolation pillar 130 does not block the first light-emitting layer 1111 and the second light-emitting layer 1112. A second electrode layer N2 is formed by vapor deposition along a first inclined direction L1 that forms an acute angle with the Z direction. At this time, the second electrode layer N2 is not only deposited on the first light-emitting layer 1111, but can also overlap with the conductive portion 131 of the first conductive isolation pillar 130a. However, due to the obstruction of the cap body 1322, the second conductive isolation pillar 130b does not overlap with the second electrode layer N2 on its conductive portion 131. Similarly, the third electrode layer N3 is deposited by vapor deposition along the second inclined direction L2, which forms an acute angle with Z. At this time, the third electrode layer N3 is not only deposited on the second light-emitting layer 1112, but can also overlap with the conductive part 131 of the second conductive isolation pillar 130b. However, due to the shielding of the cap body 1322, the first conductive isolation pillar 130a will not overlap with the third electrode layer N3 on its conductive part 131.

[0162] In other embodiments, the display panel 100 may not include the conductive isolation pillar 130, and the electrical connection with the power management chip may be achieved through the cathode layer 110b.

[0163] In some embodiments, please continue reading Figure 10 and Figure 11The first sub-pixel 111a further includes a first charge generation layer N4 and a second charge generation layer N5. The first charge generation layer N4 is disposed between the first light-emitting layer 1111 and the second electrode layer N2, and the second charge generation layer N5 is disposed between the second electrode layer N2 and the second light-emitting layer 1112. Thus, a first sub-pixel 111a is formed by sequentially arranging the first electrode layer N1, the first light-emitting layer 1111, the first charge generation layer N4, the second electrode layer N2, the second charge generation layer N5, the second light-emitting layer 1112, and the third electrode layer N3.

[0164] The first charge generation layer N4 forms the charge generation unit of the first light-emitting layer 1111, and the second charge generation layer N5 forms the charge generation unit of the second light-emitting layer 1112. For example, when the first sub-pixel 111a is in the first display state, the first electrode layer N1 and the second electrode layer N2 form an electric field under the action of voltage. The first charge generation layer N4 excites electron-hole pairs in the electric field, thereby generating charge. In the first light-emitting layer 1111, electrons and holes combine to generate photons, thereby causing the first light-emitting layer 1111 to emit light.

[0165] Similarly, when the first sub-pixel 111a is in the second display state, the second electrode layer N2 and the third electrode layer N3 form an electric field under the action of voltage, and electron-hole pairs are excited in the electric field, thereby generating charge. In the second light-emitting layer 1112, electrons and holes combine to generate photons, thereby causing the second light-emitting layer 1112 to emit light.

[0166] In some embodiments, please refer to Figure 12 , Figure 12 for Figure 11 A cross-sectional structural diagram of a second electrode layer N2, a first charge generation layer N4, and a second charge generation layer N5 is shown. The second electrode layer N2 can partially extend into the first charge generation layer N4 and / or the second charge generation layer N5, thereby blocking the diffusion of charge, shortening the charge transmission distance, reducing charge loss during transmission, and thus improving charge transmission efficiency.

[0167] In some embodiments, the first light-emitting layer 1111 and the second light-emitting layer 1112 may also be located in different first color sub-pixels 111. (See also...) Figure 13 , Figure 13This is a partial cross-sectional structural diagram of a display panel 100 provided in other embodiments of this application. The first color sub-pixel 111 includes a second sub-pixel 111b and a third sub-pixel 111c. The second sub-pixel 111b includes a first light-emitting layer 1111, and the third sub-pixel 111c includes a second light-emitting layer 1112. It is understood that the second sub-pixel 111b and the third sub-pixel 111c are similar in that they belong to the same sub-pixel 110 with the same emitted color. The difference lies in the light-emitting layers of the second sub-pixel 111b and the third sub-pixel 111c. The second light-emitting layer 1112 and the third light-emitting layer 110a form different color gamut devices within different sub-pixels 110.

[0168] It is important to note that the only layer structure used for light emission within the second sub-pixel 111b is the first light-emitting layer 1111. That is, when the first light-emitting layer 1111 is not emitting light, the second sub-pixel 111b is not emitting light. Similarly, the only layer structure used for light emission within the third sub-pixel 111c is the second light-emitting layer 1112. That is, when the second light-emitting layer 1112 is not emitting light, the third sub-pixel 111c is not emitting light.

[0169] For example, when the first light-emitting layer 1111 of the second sub-pixel 111b is powered on and emits light while the second light-emitting layer 1112 of the third sub-pixel 111c is not powered on, the first color sub-pixel 111 is in a fourth display state. At this time, the display panel 100 can obtain a color gamut display corresponding to the color gamut standard of the first light-emitting layer 1111. When the second light-emitting layer 1112 of the third sub-pixel 111c is powered on and emits light while the first light-emitting layer 1111 of the second sub-pixel 111b is not powered on, the first color sub-pixel 111 is in a fifth display state. At this time, the display panel 100 can obtain a color gamut display corresponding to the color gamut standard of the second light-emitting layer 1112.

[0170] Since the color gamut area of ​​the first light-emitting layer 1111 is different from that of the second light-emitting layer 1112, the third display state and the fourth display state correspond to the high color gamut mode and the low power consumption mode, respectively. Users can select to make the first color sub-pixel 111 be in the fourth display state or the fifth display state. For example, the high color gamut can be obtained through the high-definition mode, and the energy consumption can be obtained through the low power consumption mode.

[0171] In some embodiments, sub-pixels 110 with any color emission can be formed into second sub-pixels 111b and third sub-pixels 111c according to a set ratio, for example, the set ratio can be one-third, one-half, etc.

[0172] For example, the ratio can be set to half to achieve uniform display of the image on the display panel 100. In the actual fabrication process of the display panel 100, a first light-emitting layer 1111 and a second light-emitting layer 1112 can be formed in two evaporation cavities using two fine metal masks, respectively. One of the first light-emitting layer 1111 and the other of the second light-emitting layer 1112 corresponds to a high color gamut device, and the other corresponds to a low color gamut device.

[0173] Please see Figure 14 , Figure 14 for Figure 13 A partial cross-sectional structural diagram of the second sub-pixel 111b is shown. In the embodiments of this application, the hierarchical structure of the second sub-pixel 111b can be... Figure 5 The sub-pixel 110 in the illustrated embodiment has the same hierarchical structure. That is, the second sub-pixel 111b also includes a cathode layer 110b and an anode layer 110c disposed on opposite sides of the first light-emitting layer 1111. Similarly, please refer to... Figure 15 , Figure 15 for Figure 13 A partial structural diagram of the third sub-pixel 111c is shown. The hierarchical structure of the third sub-pixel 111c can be compared with... Figure 5 The sub-pixel 110 in the illustrated embodiment has the same hierarchical structure. That is, the third sub-pixel 111c also includes a cathode layer 110b and an anode layer 110c disposed on opposite sides of the second light-emitting layer 1112.

[0174] In some embodiments, please refer to Figure 16 , Figure 16 for Figure 13 The diagram shows the planar distribution structure of sub-pixels 110 in the display panel 100. The second sub-pixel 111b and the third sub-pixel 111c are spaced apart along a first direction L3, and also spaced apart along a second direction L4. The first direction L3 is perpendicular to the second direction L4. The first direction L3 can be... Figure 2 In the X direction of the electronic device 1000, the second direction L4 can be... Figure 2 In the Y direction of the electronic device 1000, the first color sub-pixel 111 forms an alternating and uniform distribution of high and low pixels in the first direction L3 and the second direction L4. When the user selects the first color sub-pixel 111 to be in the third display state or the fourth display state, the number of sub-pixels 110 that can emit the first color is the same and the distribution is uniform (that is, the number of second sub-pixels 111b and third sub-pixels 111c is equal), making the picture smoother and more uniform.

[0175] In other embodiments, the second sub-pixel 111b and the third sub-pixel 111c may also be formed separately in an alternating distribution in the first direction L3 or the second direction, which will not be described in detail here.

[0176] In some embodiments, the pixel density of sub-pixel 110 is 650ppi or higher. In this way, when the second sub-pixel 111b or the third sub-pixel 111c works alone, at least one of them can form a pixel density greater than 325ppi, avoiding the phenomenon of unclear image caused by the low pixel density of the display panel 100 in the third or fourth display state.

[0177] In some embodiments, the first color sub-pixel 111 also has a sixth display state. When the first color sub-pixel 111 is in the sixth display state, the first light-emitting layer 1111 in the first sub-pixel 111a is powered on to emit light, and the second light-emitting layer 1112 in the second sub-pixel 111b is powered on to emit light. In this way, all the first color sub-pixels 111 can be fully displayed. For example, at this time, the display panel 100 can be restored to a resolution of 650 PPI or higher for display, thereby improving the screen resolution.

[0178] In some embodiments, all green-emitting sub-pixels 110 are designated as first-color sub-pixels 111. The first-color sub-pixels 111 are then alternately arranged in a first direction L3 and a second direction L4 to form second sub-pixels 111b and third sub-pixels 111c. The first emitting layer 1111 in the second sub-pixel 111b forms a low-color-gamut device, and the second emitting layer 1112 in the third sub-pixel 111c forms a high-color-gamut device. When the low-color-gamut device of the second sub-pixel 111b is used, the second emitting layer 1112 in the third sub-pixel 111c is turned off. The second sub-pixel 111b, the second-color sub-pixel 112, and the third-color sub-pixel 113 form a single pixel unit, thus forming a Real RGB pixel arrangement. When the high-color-gamut device of the third sub-pixel 111c is used, the first emitting layer 1111 in the second sub-pixel 111b is turned off. The third sub-pixel 111c, the second-color sub-pixel 112, and the third-color sub-pixel 113 form a single pixel unit, thus forming a Real RGB pixel arrangement. The RGB pixel arrangement improves the screen resolution when the second sub-pixel 111b and the third sub-pixel 111c work simultaneously.

[0179] In the actual electronic device 1000, three modes can be set in the mode settings, such as high color gamut mode, low power consumption mode and high definition mode, which correspond to the fourth display state, the fifth display state and the sixth display state respectively. This allows users to select to use high color gamut devices and / or low color gamut devices according to their actual needs, thereby improving power consumption benefits.

[0180] The electronic device 1000 according to the embodiments of this application can be equipped with a display module 100A of any of the above embodiments. The display module 100A can provide users with multiple display modes to choose from, and achieve low power consumption and high benefit settings.

[0181] In the display module 100A of the electronic device 1000 in some embodiments, a first sub-pixel 111a of the first color sub-pixel 111 is formed by integrating a first light-emitting layer 1111 and a second light-emitting layer 1112 within the same sub-pixel 110. One of the first light-emitting layer 1111 and the second light-emitting layer 1112 forms a high color gamut device, and the other forms a low color gamut device. Both can be powered independently. When high color gamut display is required, the high color gamut device is controlled to operate; when low power consumption is required, the low color gamut device can be controlled to operate, or both the high and low color gamut devices can operate simultaneously.

[0182] In some embodiments of the display module 100A of the electronic device 1000, a first light-emitting layer 1111 and a second light-emitting layer 1112 are respectively disposed in different sub-pixels 110. Second sub-pixels 111b and third sub-pixels 111c form the first color sub-pixel 111. One of the first light-emitting layer 1111 and the other of the second light-emitting layer 1112 forms a high color gamut device and the other forms a low color gamut device; both can be powered independently. When high color gamut display is required, the high color gamut device is controlled to operate; when low power consumption is required, the low color gamut device is controlled to operate; and when high-definition mode is required, both the high color gamut device and the low color gamut device are controlled to operate simultaneously.

[0183] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0184] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A display panel, characterized in that, include: Multiple sub-pixels are arranged in an array; A pixel definition layer, wherein adjacent sub-pixels are separated by the pixel definition layer; The sub-pixel includes a first color sub-pixel, which includes a first light-emitting layer and a second light-emitting layer. The color gamut area of ​​the first light-emitting layer is different from that of the second light-emitting layer.

2. The display panel according to claim 1, characterized in that, The color gamut standard of either the first light-emitting layer or the second light-emitting layer is sRGB.

3. The display panel according to claim 2, characterized in that, The color gamut standard of the other of the first and second light-emitting layers is one of DC I-P3, BT2020, Adobe RGB, or NTSC.

4. The display panel according to any one of claims 1-3, characterized in that, The first color sub-pixel includes a first sub-pixel, which includes a first light-emitting layer and a second light-emitting layer that are stacked and spaced apart.

5. The display panel according to claim 4, characterized in that, The first sub-pixel has a first display state and a second display state; When the first sub-pixel is in the first display state, the first light-emitting layer is energized; When the first sub-pixel is in the second display state, the second light-emitting layer is energized.

6. The display panel according to claim 5, characterized in that, The first sub-pixel has a third display state, and when the first sub-pixel is in the third display state, both the first light-emitting layer and the second light-emitting layer are powered on.

7. The display panel according to claim 5 or 6, characterized in that, The first sub-pixel further includes a first electrode layer, a second electrode layer, and a third electrode layer. The first electrode layer and the second electrode layer are disposed on opposite sides of the first light-emitting layer, and the second electrode layer and the third electrode layer are disposed on opposite sides of the second light-emitting layer. The first electrode layer and the second electrode layer have opposite polarities, and the second electrode layer and the third electrode layer have opposite polarities.

8. The display panel according to claim 7, characterized in that, The display panel further includes a first conductive isolation pillar and a second conductive isolation pillar, the first conductive isolation pillar and the second conductive isolation pillar are disposed on the pixel definition layer, and the first sub-pixel is located between the first conductive isolation pillar and the second conductive isolation pillar; The second electrode layer is electrically connected to the first conductive isolation pillar, and the third electrode layer is electrically connected to the second conductive isolation pillar.

9. The display panel according to claim 7 or 8, characterized in that, The first sub-pixel includes a first charge generation layer and a second charge generation layer; The first charge generation layer is disposed between the first light-emitting layer and the second electrode layer, and the second charge generation layer is disposed between the second electrode layer and the second light-emitting layer.

10. The display panel according to claim 9, characterized in that, The second electrode layer extends into the first charge generation layer and / or the second charge generation layer.

11. The display panel according to any one of claims 1-3, characterized in that, The first color sub-pixel includes a second sub-pixel and a third sub-pixel, the second sub-pixel includes the first light-emitting layer, and the third sub-pixel includes the second light-emitting layer.

12. The display panel according to claim 11, characterized in that, The second sub-pixel and the third sub-pixel are spaced apart along a first direction, and / or the second sub-pixel and the third sub-pixel are spaced apart along a second direction; The first direction is perpendicular to the second direction.

13. The display panel according to claim 11 or 12, characterized in that, The first color sub-pixel has a fourth display state and a fifth display state; When the first color sub-pixel is in the fourth display state, the first light-emitting layer in the second sub-pixel is energized; When the first color sub-pixel is in the fifth display state, the second light-emitting layer in the third sub-pixel is energized.

14. The display panel according to claim 11 or 12, characterized in that, The first color sub-pixel has a sixth display state; When the first color sub-pixel is in the sixth display state, the first light-emitting layer in the second sub-pixel is energized, and the second light-emitting layer in the third sub-pixel is energized.

15. The display panel according to any one of claims 1-14, characterized in that, The first color sub-pixel emits green light.

16. The display panel according to any one of claims 1-15, characterized in that, The pixel density of the sub-pixel is greater than or equal to 650 pp i.

17. A display module, characterized in that, Includes a cover plate and a display panel, wherein the display panel is the display panel described in any one of claims 1-16; The cover plate is placed over the display panel.

18. An electronic device, characterized in that, It includes a housing and a display module, wherein the display module is the display module as described in claim 17, and the display module is fixed to the housing.

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