Display substrate and electronic equipment

Abstract

The embodiment of the invention provides a display substrate which comprises a display area, a display area substrate, a light-emitting layer arranged on one side of the substrate and a light blocking layer, the light blocking layer is arranged on the side, away from the substrate, of the light-emitting layer, the light-emitting layer comprises a plurality of pixels, and each pixel comprises a plurality of sub-pixels; the light blocking layer is provided with a plurality of first light transmitting holes and a plurality of second light transmitting holes, the second light transmitting holes and the sub-pixels are arranged in a one-to-one correspondence mode, light filtering pieces are arranged in the second light transmitting holes, and the first light transmitting holes and the sub-pixels are arranged in a staggered mode in the direction perpendicular to the substrate. The light blocking layers of the first display area and the second display area are respectively provided with a plurality of first light transmitting holes, so that light rays can enter the position below the display screen through the first light transmitting holes, the first light transmitting holes are formed in the whole display area, the difference of reflectivity is small on the whole display area, and in the screen turn-off state, the brightness of the display screen is improved. The appearance consistency of the display substrate is better. Meanwhile, the embodiment of the invention further provides electronic equipment.

Description

Technical Field

[0001] The present application relates to the technical field of display screens, and in particular to a display substrate and an electronic device. Background Art

[0002] Electronic devices are often equipped with displays. To reduce display power consumption, current displays are beginning to adopt COE (Color Filter on Encapsulation) packaging technology. This technology combines a color filter layer (color filter) with an encapsulation layer (encapsulation) to reduce optical path loss through an integrated design. COE packaging technology uses black matrix row shielding, resulting in low light transmittance.

[0003] Electronic devices also feature various sensors, some of which are located beneath the display screen. These sensors require light transmission to function, so holes are created in the black matrix corresponding to the sensor locations to ensure proper function. However, the black matrix has a higher reflectivity in the areas with holes and those without holes. This creates a visual difference when the display screen is off, resulting in poor visual consistency. Summary of the Invention

[0004] The purpose of this application is to provide a display substrate and an electronic device to at least partially improve the above technical problems.

[0005] In the first aspect, an embodiment of the present application provides a display substrate, comprising a display area, a display area substrate, a light-emitting layer arranged on one side of the substrate, and a light-blocking layer, the light-blocking layer being arranged on a side of the light-emitting layer away from the substrate, the light-emitting layer comprising a plurality of pixels, each of the pixels comprising a plurality of sub-pixels; the light-blocking layer is provided with a plurality of first light-transmitting holes and a plurality of second light-transmitting holes, the plurality of second light-transmitting holes being arranged in a one-to-one correspondence with the plurality of sub-pixels, a filter being arranged in the second light-transmitting hole, and the plurality of first light-transmitting holes and the sub-pixels being staggered in a direction perpendicular to the substrate.

[0006] In a second aspect, an embodiment of the present application provides an electronic device comprising the above-mentioned display substrate.

[0007] The display substrate and electronic device provided by the present application have multiple first light-transmitting holes in the light-blocking layer of the first display area and the second display area, so that light can pass through the first light-transmitting holes into the bottom of the display screen. Since the first light-transmitting holes are provided in the entire display area, the difference in reflectivity is small in the entire display area. When the screen is off, the appearance consistency of the display substrate is good.

[0008] These aspects or other aspects of the present application will be more clearly understood in the following description of the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the accompanying drawings required for the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0010] Figure 1 is a schematic structural diagram of an electronic device provided by an embodiment of the present application; Figure 2 is a partial cross-sectional structural diagram of an electronic device provided by an embodiment of the present application; Figure 3 is Figure 2 an enlarged view of part A in Figure 4 is a partial cross-sectional structural diagram of a display substrate provided by an embodiment of the present application; Figure 5 is a partial top-view structural diagram of a light-emitting layer and a pixel circuit layer in a display substrate provided by an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0011] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0012] In the related art, an electronic device is usually provided with a display screen. In order to reduce the power consumption of the display screen, the current display screen has begun to adopt the COE (Color Filter on Encapsulation) packaging technology. This packaging technology combines the color filter layer (Color Filter) with the encapsulation layer (Encapsulation), and reduces the optical path loss through an integrated design. The COE packaging technology uses a black matrix row to block, and the light transmittance is relatively low.

[0013] The electronic device is also provided with various sensors, and some of these sensors are disposed below the display screen. Since the sensors need to transmit light during operation, it is necessary to open holes in the black matrix corresponding to the positions of the sensors so that the sensors can work properly. However, the reflectivity difference will be formed between the hole regions and non-hole regions of the black matrix, and the reflectivity of the hole regions is higher. When the display screen is in the off state, a visual difference will be formed on the display screen, resulting in poor appearance consistency.

[0014] Based on this, the inventors of the present application propose a display substrate and an electronic device in order to at least partially improve the above technical problems. The embodiments of the present application will be specifically described below with reference to the drawings.

[0015] Please refer to Figure 1 , this embodiment provides an electronic device 10, including a middle frame 20, a display substrate 30, and a light sensor 100. Among them, the display substrate 30 is assembled to the middle frame 20.

[0016] Please refer to Figure 1 and Figure 2 , where the middle frame 20 includes a middle plate 21 and a frame 22. Among them, the middle plate 21 is a substantially plate-like structure and is used to install various types of components. The frame 22 surrounds the middle plate 21 and is connected to the middle plate 21. The display substrate 30 is installed on the frame 22 during assembly and is disposed at a relatively spaced interval from the middle plate 21. In some embodiments, please refer to Figure 3 , the frame 22 is formed with a step 23 facing inward. The step 23 includes a step surface and an inner side surface connected to the step surface, and the included angle between the step surface and the inner side surface is approximately 90°.

[0017] The light sensor 100 can be various sensors that need to collect light, such as an ambient light sensor 100, an in-screen optical fingerprint sensor, an in-screen camera, etc. In this embodiment, the ambient light sensor 100 is taken as an example for introduction. It should be noted that in some other embodiments, the light sensor 100 can be one or more, and this embodiment does not make any limitation thereto. Only as an example, the light sensor 100 can be an ambient light sensor. The ambient light sensor is disposed inside the middle frame 20 and below the display substrate 30. The ambient light sensor is used to detect the light intensity of the ambient light, and thus can be used to adjust the display brightness of the display substrate 30. Specifically, the electronic device 10 may further include a control unit (not shown in the figure). The control unit is electrically connected to the ambient light sensor and is also electrically connected to the display substrate 30. The control unit is used to control the display substrate 30 to adjust the display brightness according to the ambient light brightness detected by the ambient light sensor. For example, when the ambient light brightness is weak or becomes weak, the display brightness of the display substrate 30 is reduced; when the ambient light brightness is strong or becomes strong, the display brightness of the display substrate 30 is increased.

[0018] The control unit may include a memory and a processor, and the processor may include one or more processing cores. The processor is connected to various parts within the entire electronic device 10 through various interfaces and circuits. By running or executing instructions, programs, code sets, or instruction sets stored in the memory, and by invoking data stored in the memory, the processor performs various functions of the electronic device 10 and processes data. Optionally, the processor may be implemented in at least one hardware form of digital signal processing (DSP), field-programmable gate array (FPGA), or programmable logic array (PLA). The processor may integrate a combination of one or more of a central processing unit (CPU), a graphics processing unit (GPU), and a modem, etc. Among them, the CPU mainly processes the operating system, user interface, application programs, etc.; the GPU is responsible for rendering and drawing the displayed content; the modem is used to process wireless communication. It can be understood that the above-mentioned modem may not be integrated into the processor and may be implemented separately through a communication chip.

[0019] The memory may include a random access memory (RAM) and may also include a read-only memory. The memory is used to store instructions, programs, codes, code sets, or instruction sets. The memory may include a program storage area and a data storage area. Among them, the program storage area may store instructions for implementing the operating system, instructions for implementing at least one function (such as a touch function, a sound playback function, an image playback function, etc.), instructions for implementing the following various method embodiments, etc. The data storage area may also store data created during the use of the electronic device 10 (such as a phone book, audio and video data, chat record data, etc.).

[0020] Please refer to Figure 4 and Figure 5 , as a more specific implementation manner, the display substrate 30 includes a display area 31, and the display area 31 includes a first display area 32 and a second display area 33. Among them, the second display area 33 is the area corresponding to the optical sensor, and the first display area 32 is the other area of the display area 31 except the second display area 33. It can be understood that according to different design requirements, the second display area 33 may be any area of the display area 31, and this embodiment does not limit this. It should also be noted that the second display area 33 may be a continuous display area or discrete multiple display areas, and this embodiment does not limit this.

[0021] The display area 31 has a first direction X and a second direction Y, the first direction X and the second direction Y are substantially perpendicular to each other, and the first direction X can be the lateral direction of the electronic device 10, and the second direction Y can be the vertical direction of the electronic device 10. Among them, the first display area 32 and the second display area 33 are of an integral structure. The display area 31 includes a substrate 40, a light-emitting layer 50, and a light-blocking layer 60, wherein the light-emitting layer 50 is disposed on one side of the substrate 40, and the light-blocking layer 60 is disposed on the side of the light-emitting layer 50 away from the substrate 40.

[0022] The substrate 40 can be a rigid substrate, such as a glass substrate; or it can be a flexible substrate, and its material can be polyimide, polystyrene, polyethylene terephthalate, parylene, polyethersulfone, or polyethylene naphthalate. The substrate 40 is mainly used to support the devices disposed thereon.

[0023] The display area 31 may further include an array layer, the array layer is disposed between the substrate 40 and the light-emitting layer 50, and the array layer may include a first conductive layer 41, a second conductive layer 42, and a third conductive layer 43 that are disposed on one side of the substrate 40 and stacked. Interlayer insulating layers (not shown) are disposed between the first conductive layer 41 and the second conductive layer 42, and between the second conductive layer 42 and the third conductive layer 43. Exemplarily, the pixel 51 driving circuit disposed on the array layer includes a transistor and a storage capacitor. The transistor includes an active layer, a gate 81, a source 83, and a drain 82. The storage capacitor includes a first electrode plate (not shown) and a second electrode plate (not shown). As an example, the gate 81 and the first electrode plate may be located on the first conductive layer 41, the second electrode plate may be located on the second conductive layer 42, and the source 83 and the drain 82 may be located on the third conductive layer 43.

[0024] The light-emitting layer 50 includes a plurality of pixels 51, each pixel 51 includes a plurality of sub-pixels 511. Exemplarily, each pixel 51 may include three sub-pixels 511, namely a red light pixel 51, a blue light pixel 51, and a filter pixel 51, and the plurality of sub-pixels 511 of each pixel 51 are arranged in a predetermined manner. The plurality of pixels 51 may be neatly arranged in an RGB arrangement. In another implementation manner, the plurality of sub-pixels 511 may be arranged in a Pentile arrangement (P arrangement) manner, for example, each pixel 51 is composed of RG or BG sub-pixels 511, and the green pixel 51 is complete. The present application does not limit the arrangement manner of the plurality of pixels 51, and may also be a diamond arrangement, a Delta arrangement, etc., for example.

[0025] The light-emitting layer 50 also includes a first electrode layer 53 and a second electrode layer 52. The first electrode layer 53 and the second electrode layer 52 are respectively disposed on opposite sides of the plurality of pixels 51. The first electrode layer 53 and the second electrode layer 52 are used to form an electric field, thereby driving the pixels 51 to emit light. The first electrode layer 53 is located on a side of the plurality of pixels 51 close to the light-blocking layer 60, and the second electrode layer 52 is located on a side of the plurality of pixels 51 close to the substrate 40. The first electrode layer 53 can be, for example, an anode layer, and the second electrode layer 52 can be a cathode layer. In other embodiments, the first electrode layer 53 can also be a cathode layer, and the second electrode layer 52 can be an anode layer.

[0026] In this embodiment, the first electrode layer 53 is a cathode layer, and can be formed of, for example, a light-transmitting material, so that the light emitted by the pixel 51 can pass through the first electrode layer 53. For example, the first electrode layer 53 can be made of an indium tin oxide material. The second electrode layer 52 can be made of one of the metal materials such as silver (Ag), aluminum (Al), lithium (Li), magnesium (Mg), ytterbium (Yb), calcium (Ca) or indium (In), and can also be made of an alloy of the aforementioned metal materials, such as magnesium-silver alloy (Mg / Ag) or lithium-aluminum alloy (Li / Al), which is not limited in this embodiment. The second electrode layer 52 can also be coated with a black matrix material.

[0027] The light-blocking layer 60 is disposed on the side of the light-emitting layer 50 away from the substrate 40 to block light. It can be made of a black matrix material, specifically a polymer resin with low light transmittance. The material is not limited to the above materials, as long as the light-blocking performance of the light-blocking layer 60 meets the requirements.

[0028] In this embodiment, the light-blocking layer 60 is provided with a plurality of first light-transmitting holes 61, so that external light can pass through the first light-transmitting holes 61 and enter the lower portion of the light-emitting layer 50. It is understood that the plurality of first light-transmitting holes 61 can be evenly distributed throughout the display area 31, that is, evenly distributed within the first display area 32 and the second display area 33. Since the first light-transmitting holes 61 are provided throughout the entire display area 31, the difference in reflectivity across the entire display area 31 is small, and the appearance of the display substrate 30 is consistent when the screen is off. The plurality of first light-transmitting holes 61 are staggered with the sub-pixels 511 in a direction perpendicular to the substrate 40, so that the normal light emission of each sub-pixel 511 is not affected.

[0029] In this embodiment, the multiple first light-transmitting holes 61 are arranged at intervals. Along the first direction X, there is one sub-pixel 511 between two adjacent first light-transmitting holes 61. By increasing the distance between two adjacent first light-transmitting holes 61, the first light-transmitting holes 61 can better avoid the pixel circuit 54 below, thereby improving the light transmittance. In the second direction Y, each first light-transmitting hole 61 can be arranged adjacent to one sub-pixel 511, that is, there is no complete sub-pixel 511 between two adjacent first light-transmitting holes 61. That is to say, the distance between two adjacent first light-transmitting holes 61 in the first direction X is greater than the distance between two adjacent first light-transmitting holes 61 in the second direction Y. By increasing the distance between two first light-transmitting holes 61 in the first direction X, interference with the pixel circuit 54 below can be avoided, and the light transmittance can be further improved.

[0030] The cross-section of the first light-transmitting hole 61 can be circular, oval or polygonal, such as pentagonal, hexagonal, etc., and this embodiment does not limit this. Only as an example, in this embodiment, the cross-section of the first light-transmitting hole 61 is circular. The aperture of the first light-transmitting hole 61 can be any value, and this embodiment does not limit this. Preferably, in this embodiment, the aperture size of the first light-transmitting hole 61 can be set larger. By increasing the aperture of the first light-transmitting hole 61, the light transmission amount of the first light-transmitting hole 61 can be increased, and further, the opening density of the first light-transmitting hole 61 can be reduced, that is, the process difficulty can be reduced, and it is also beneficial to avoid the pixel circuit 54 below.

[0031] Further, in this embodiment, the aperture of the first light-transmitting hole 61 is, for example, 12 μm - 40 μm, where the aperture refers to the maximum inner diameter of the first light-transmitting hole 61. Of course, it can be understood that in some other embodiments, the aperture of the first light-transmitting hole 61 can also be other values. Compared with the openings in the black matrix layer in the related art, the aperture of the first light-transmitting hole 61 in this embodiment is significantly increased, which can increase the light transmission amount of the first light-transmitting hole 61, making the reflectance of the display area 31 of the entire display substrate 30 more uniform in the off-screen state and the appearance consistency better.

[0032] The light-blocking layer 60 is also provided with multiple second light-transmitting holes 62. The multiple second light-transmitting holes 62 are arranged in one-to-one correspondence with the multiple sub-pixels 511. A light-filtering member 63 is arranged in the second light-transmitting hole 62. The light-filtering member 63 is used to filter light to emit light of different colors. For sub-pixels 511 of different colors, the corresponding light-filtering member 63 can filter light of different colors. For example, if the sub-pixel 511 is a red light pixel 51, the corresponding light-filtering member 63 can filter red light, that is, red light can pass through the light-filtering member 63, and light of other colors is blocked from passing through.

[0033] The aperture of each second light-transmitting hole 62 is greater than or equal to the size of the corresponding sub-pixel 511, so that the light emitted by each sub-pixel 511 can completely pass through the light filter 63 disposed in the second light-transmitting hole 62.

[0034] The light-emitting layer 50 further includes a pixel circuit 54. The pixel circuit 54 includes a plurality of first control lines 541 arranged along the first direction X and a plurality of second control lines 542 arranged along the second direction Y. The first direction X and the second direction Y are substantially perpendicular to each other. The intersection of the first control line 541 and the second control line 542 is electrically conducted through wire change. The first light-transmitting hole 61 is arranged offset in the direction perpendicular to the substrate 40 from the intersection of the first control line 541 and the second control line 542, which can avoid the pixel circuit 54 from affecting the light transmittance and improve the light transmittance.

[0035] The pixel circuit 54 can be arranged on the side of the first electrode layer 53 away from the second electrode layer 52 and is electrically connected to the cathode and the anode. It can be understood that the pixel circuit 54 can further include a data line 543. The data line 543 can extend along the second direction Y or along the first direction X. In this embodiment, the data line 543 extends along the second direction Y.

[0036] In this embodiment, there are two sub-pixels 511 between two adjacent second control lines 542, that is, the distance between two adjacent second control lines 542 is increased. On the one hand, more space can be reserved for arranging larger-sized first light-transmitting holes 61, avoiding the overlap of the second control line 542 and the first light-transmitting hole 61 in the direction perpendicular to the substrate 40 and affecting the light transmittance. At the same time, by reducing the number of second control lines 542, the process manufacturing difficulty can be reduced. Cooperating with the larger-sized first light-transmitting holes 61, the light transmittance of the entire display area 31 can be better, and the reflectivity in the off-screen state is more uniform, so the appearance consistency is better.

[0037] In addition, in this embodiment, one or more third light-transmitting holes 55 are provided in the area of the second electrode layer 52 corresponding to the second display area 33. Each third light-transmitting hole 55 at least partially overlaps with the first light-transmitting hole 61 in the direction perpendicular to the substrate 40. So that light can enter below the display substrate 30 through the first light-transmitting hole 61 and the third light-transmitting hole 55. The light sensor can be arranged below the display substrate 30 and corresponds to the second display area 33, so that the light entering through the first light-transmitting hole 61 and the third light-transmitting hole 55 can be collected by the light sensor.

[0038] It can be understood that the third light-transmitting hole 55 corresponding to the light sensor can be one or more. Correspondingly, the first light-transmitting hole 61 corresponding to the third light-transmitting hole 55 can also be one or more.

[0039] The display substrate 30 may further include a cover plate 70 and a flexible glass 71. The flexible glass 71 is adhered to the surface of the light-blocking layer 60 through an adhesive layer 72. The adhesive layer 72 is light-transmissive. When set, the space in the first light-transmitting hole 51 can be filled with the adhesive of the adhesive layer 72. The cover plate 70 is disposed on the surface of the flexible glass 71 away from the substrate 40 and serves as a protective layer of the display substrate 30.

[0040] In the display substrate 30 in the above embodiment, a plurality of first light-transmitting holes 61 are formed in the light-blocking layers 60 in both the first display area 32 and the second display area 33. In this way, light can enter below the display screen through the first light-transmitting holes 61. Since the first light-transmitting holes 61 are formed in the entire display area 31, the difference in reflectivity is small in the entire display area 31. In the off-screen state, the appearance consistency of the display substrate 30 is good.

[0041] It should also be noted that the electronic device 1010 in the present application may be a mobile phone or a smart phone (e.g., iPhone TM-based, Android TM-based phone), a portable game device (e.g., Nintendo DS TM, PlayStation Portable TM, Gameboy Advance TM, iPhone TM), a laptop computer, a PDA, a portable Internet device, a music player, and a data storage device, other handheld devices, and such as watches, earphones, pendants, earphones, etc. The electronic device 1010 may also be other wearable devices (e.g., head-mounted devices (HMDs) such as electronic glasses, electronic clothes, electronic bracelets, electronic necklaces, electronic tattoos, electronic devices 1010, or smart watches).

[0042] The electronic device 10 may also be any one of a plurality of electronic devices 10. The plurality of electronic devices 10 include, but are not limited to, cellular phones, smart phones, other wireless communication devices, personal digital assistants, audio players, other media players, music recorders, video recorders, cameras, other media recorders, radios, medical devices, vehicle transportation instruments, calculators, programmable remote controls, pagers, laptop computers, desktop computers, printers, netbook computers, personal digital assistants (PDAs), portable multimedia players (PMPs), Moving Picture Experts Group (MPEG-1 or MPEG-2) Audio Layer 3 (MP3) players, portable medical devices, and digital cameras and combinations thereof.

[0043] It should be noted that the technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as falling within the scope described in this specification.

[0044] The above is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A display substrate, characterized in that, Comprising a display area, the display area comprising: A substrate; A light-emitting layer disposed on one side of the substrate, the light-emitting layer comprising a plurality of pixels, each pixel comprising a plurality of sub-pixels; A light-blocking layer disposed on the side of the light-emitting layer away from the substrate, the light-blocking layer being provided with a plurality of first light-transmitting holes and a plurality of second light-transmitting holes, the plurality of second light-transmitting holes being arranged in one-to-one correspondence with the plurality of sub-pixels, a light-filtering member being disposed in the second light-transmitting holes, and the plurality of first light-transmitting holes being offset from the sub-pixels in a direction perpendicular to the substrate.

2. The display substrate according to claim 1, wherein The display area has a first direction and a second direction perpendicular to each other, the plurality of first light-transmitting holes being spaced apart, and along the first direction, there is one sub-pixel spaced between two adjacent first light-transmitting holes.

3. The display substrate according to claim 2, wherein The aperture of the first light-transmitting hole is 12μm - 40μm.

4. The display substrate according to claim 3, wherein The cross-section of the first light-transmitting hole is circular, elliptical or polygonal.

5. The display substrate according to claim 2, wherein The light-emitting layer further comprises a pixel circuit, the pixel circuit comprising a plurality of first control lines arranged along the first direction and a plurality of second control lines arranged along the second direction, and the intersection of the first light-transmitting hole with the first control line and the second control line is offset in a direction perpendicular to the substrate.

6. The display substrate according to claim 5, wherein There are two sub-pixels between two adjacent second control lines.

7. The display substrate according to any one of claims 1-6, characterized in that, The display area comprises a first display area and a second display area, the light-emitting layer further comprising a first electrode layer and a second electrode layer, the first electrode layer and the second electrode layer being respectively disposed on opposite sides of the plurality of pixels, the first electrode layer being a transparent electrode, and the area of the second electrode layer corresponding to the second display area being provided with one or more third light-transmitting holes, each third light-transmitting hole at least partially overlapping with at least one of the first light-transmitting holes in a direction perpendicular to the substrate.

8. The display substrate according to claim 7, wherein The second electrode layer is located on the side of the plurality of pixels away from the light-blocking layer.

9. The display substrate according to claim 7, wherein The first electrode layer is an indium tin oxide layer.

10. An electronic device, characterized in that, Comprising the display substrate according to any one of claims 1-9.

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