Display substrate, display panel and display device

Abstract

The utility model discloses a display substrate, a display panel and a display device, which are used for integrating a radar antenna assembly on the display substrate, simplifying the manufacturing process of a display product provided with the radar antenna assembly and saving the cost. The embodiment of the utility model provides a display substrate, and the display substrate comprises a substrate which comprises a display area and a peripheral area surrounding the display area; the plurality of conductive layers are sequentially arranged on one side of the substrate; the radar antenna assembly is located in the peripheral area; the radar antenna assembly is located on the at least one conductive layer.

Description

Technical Field

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

[0002] Radar, as a key technology for ranging, is widely used in aviation, military, and automotive safety systems due to its advantages such as low cost, high performance, strong anti-interference capability, ability to test both static and dynamic targets, low transmission power, and strong environmental adaptability. Currently, radar technology has largely been commercialized, and its cost has been reduced to a very low level. Applying radar to display products can detect the presence of people in front of a television; when someone is present, the television automatically turns on; when no one is present, the television automatically enters sleep mode, thus reducing the overall power consumption of the television. Utility Model Content

[0003] This disclosure provides a display substrate, a display panel, and a display device for integrating radar antenna components onto the display substrate, simplifying the manufacturing process of display products with radar antenna components and saving costs.

[0004] This disclosure provides a display substrate, which includes:

[0005] The substrate includes the display area and the peripheral area surrounding the display area;

[0006] Multiple conductive layers are sequentially disposed on one side of a substrate.

[0007] A radar antenna assembly is located in the peripheral area; the radar antenna assembly is located in at least one conductive layer.

[0008] In some embodiments, the surrounding area includes:

[0009] At least one binding area is located on one side of the display area in the first direction;

[0010] A fan-out area is located in a first direction between a display area and at least one bonding area; the radar antenna assembly is located at least in the fan-out area;

[0011] The display substrate also includes:

[0012] Multiple fan-out lines extend through the fan-out area to the bonding area; the multiple fan-out lines are located in at least a portion of the conductive layers in multiple conductive layers; the orthographic projection of the radar antenna assembly onto the substrate and the orthographic projection of the fan-out lines onto the substrate do not overlap.

[0013] In some embodiments, the peripheral area includes a plurality of binding areas arranged along a second direction; the second direction intersects the first direction;

[0014] Multiple fan-out lines are divided into multiple fan-out line groups arranged along the second direction. Multiple fan-out lines in one fan-out line group extend to the same bonding area, and multiple fan-out lines in different fan-out line groups extend to different bonding areas.

[0015] The orthographic projection of the radar antenna assembly onto the substrate lies between the orthographic projections of two adjacent fan-out line groups onto the substrate.

[0016] In some embodiments, the display substrate further includes: a plurality of thin-film transistors;

[0017] The conductive layer includes:

[0018] The first conductive layer includes the gate of a thin-film transistor;

[0019] The second conductive layer includes the source and drain of the thin-film transistor;

[0020] The radar antenna assembly is located in the first conductive layer and / or the second conductive layer.

[0021] In some embodiments, the radar antenna assembly includes: at least one antenna element and a radar signal line electrically connected to the at least one antenna element; the antenna element includes: a transmitting unit and a receiving unit;

[0022] The surrounding area includes a bonding area, which includes multiple first bonding pins and multiple second bonding pins; the fan-out line is electrically connected to the first bonding pin, and the radar signal line extends to the bonding area and is electrically connected to the second bonding pin.

[0023] In some embodiments, the transmitting unit and the receiving unit in the antenna unit are arranged along a second direction; the second direction intersects the first direction.

[0024] The transmitting and receiving units are electrically connected to the same radar signal line.

[0025] In some embodiments, the transmitting unit and the receiving unit are patterned on the substrate as rectangles with a first recess in a first direction; the radar signal line is electrically connected to the transmitting unit and the receiving unit in the first recess.

[0026] In the first direction, the width of the first recess is less than half the width of the pattern of the transmitting unit and the receiving unit on the substrate.

[0027] In some embodiments, the pattern of the transmitting unit and the receiving unit on the substrate includes a first strip, a second strip, and a third strip connected in sequence, and the radar signal line is electrically connected to the first strip.

[0028] The first strip and the third strip extend along the second direction, and the second strip extends along the first direction. The lengths of the first strip and the third strip are greater than the length of the second strip.

[0029] In some embodiments, the transmitting unit includes: a plurality of transmitting subunits;

[0030] The receiving unit includes multiple receiving sub-units;

[0031] The radar signal lines include a first radar signal line that is electrically connected to the transmitting unit in a one-to-one correspondence and a second radar signal line that is electrically connected to the receiving unit in a one-to-one correspondence.

[0032] In some embodiments, a plurality of transmitting subunits in the transmitting unit are arranged along a first direction, and the plurality of transmitting subunits are electrically connected to a first radar signal line;

[0033] Multiple receiving sub-units in the receiving unit are arranged along a first direction, and all multiple receiving sub-units are electrically connected to the second radar signal line.

[0034] In some embodiments, the transmitting subunit and the receiving subunit are patterned on the substrate as rectangles with a second recess in a first direction; the radar signal line is electrically connected to the transmitting subunit or the receiving subunit in the second recess.

[0035] In the first direction, the width of the second recess is less than half the width of the pattern of the transmitting subunit and the receiving subunit on the substrate.

[0036] In some embodiments, a plurality of transmitting subunits in the transmitting unit are arranged along a second direction, and a plurality of receiving subunits in the receiving unit are arranged along a second direction;

[0037] The first radar signal line includes: a first sub-signal line electrically connected to one of the transmitting sub-units, and a second sub-signal line electrically connected to two adjacent transmitting sub-units;

[0038] The second radar signal line includes: a third sub-signal line electrically connected to one of the receiving sub-units, and a fourth sub-signal line electrically connected to two adjacent receiving sub-units.

[0039] In some embodiments, the transmitting subunit and the receiving subunit are patterned in a rectangular shape on the substrate.

[0040] This disclosure provides a display panel, which includes a display substrate provided in this disclosure.

[0041] In some embodiments, it also includes:

[0042] Opposing substrate, positioned opposite to the display substrate;

[0043] The liquid crystal layer is located between the display substrate and the opposing substrate.

[0044] This disclosure provides a display device, which includes:

[0045] The display panel provided in the embodiments of this disclosure;

[0046] A driving device is electrically connected to the display panel; the driving device includes: a radar driving chip and a data processing unit; the radar driving chip is used to: provide driving signals to the radar antenna assembly, control the radar antenna assembly to transmit and receive signals, and process and output the signals received by the radar antenna assembly; the data processing unit is used to: process the data output by the radar driving chip to determine and store distance data.

[0047] The system controller is electrically connected to the driving device; the system controller is used to: read the distance data stored in the data processing unit, and control the display panel to start or go into sleep mode based on the relationship between the distance data and the start-up of the display panel.

[0048] The display substrate, display panel, display device, and driving method provided in this disclosure include a radar antenna assembly in the display substrate. When the display substrate is used in display products such as computers and televisions, the radar antenna assembly can detect whether someone is in front of the display substrate, and control the display product to wake up (i.e., start up) or go into sleep mode based on the detection result, thereby achieving power saving. Furthermore, the antenna assembly is located on at least one conductive layer, meaning the radar antenna assembly is integrated into the display substrate. The pattern of the radar antenna assembly can be fabricated simultaneously with the fabrication of the conductive layer of the display substrate, eliminating the need for separate fabrication and assembly of the radar antenna assembly. This simplifies the manufacturing process of display products with radar antenna assemblies and saves costs. Attached Figure Description

[0049] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0050] Figure 1 This is a schematic diagram of the structure of a display substrate provided in an embodiment of the present disclosure;

[0051] Figure 2 This is a schematic diagram of another display substrate provided in an embodiment of the present disclosure;

[0052] Figure 3 This is a schematic diagram of the structure of a radar antenna assembly provided in an embodiment of the present disclosure;

[0053] Figure 4 This is a schematic diagram of another radar antenna assembly provided in an embodiment of the present disclosure;

[0054] Figure 5This is a schematic diagram of the structure of another radar antenna assembly provided in an embodiment of the present disclosure;

[0055] Figure 6 This is a schematic diagram of the structure of another radar antenna assembly provided in an embodiment of the present disclosure;

[0056] Figure 7 An S-type radar antenna assembly provided in this disclosure embodiment 11 and S 21 Simulation result diagram;

[0057] Figure 8 A schematic diagram of the gain of a radar antenna assembly in different directions provided in an embodiment of this disclosure;

[0058] Figure 9 A radiation pattern of a radar antenna assembly provided in an embodiment of this disclosure;

[0059] Figure 10 This is a schematic diagram of the structure of a display panel provided in an embodiment of the present disclosure;

[0060] Figure 11 This is a schematic diagram of the structure of a display device provided in an embodiment of the present disclosure;

[0061] Figure 12 This is a schematic diagram of another display device provided in an embodiment of the present disclosure;

[0062] Figure 13 This is a schematic flowchart of a driving method for a display device provided in an embodiment of the present disclosure. Detailed Implementation

[0063] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. Furthermore, the embodiments and features in the embodiments of this disclosure can be combined with each other without conflict. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0064] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” mean that an element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0065] It should be noted that the dimensions and shapes of the figures in the accompanying drawings do not reflect actual scale and are intended only to illustrate the content of this disclosure. Furthermore, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0066] This disclosure provides a display substrate, such as... Figure 1 , Figure 2 As shown, the display substrate includes:

[0067] The substrate 1 includes a display area AA and a peripheral area NA surrounding the display area;

[0068] Multiple conductive layers 2 are sequentially disposed on one side of the substrate 1;

[0069] Radar antenna assembly 3 is located in the peripheral region NA; radar antenna assembly 3 is located in at least one conductive layer 2.

[0070] The display substrate provided in this disclosure includes a radar antenna assembly. When the display substrate is used in display products such as computers and televisions, the radar antenna assembly can detect whether there is a person in front of the display substrate. Based on the detection result, the display product can be controlled to wake up (i.e., start up) or go into sleep mode, thereby achieving power saving. Furthermore, the antenna assembly is located on at least one conductive layer, meaning the radar antenna assembly is integrated into the display substrate. The pattern of the radar antenna assembly can be fabricated simultaneously with the fabrication of the conductive layer of the display substrate, eliminating the need to fabricate and assemble the radar antenna assembly separately. This simplifies the manufacturing process of display products with radar antenna assemblies and saves costs.

[0071] It should be noted that this disclosure utilizes a radar antenna assembly for ranging to detect whether there is a person in front of the display substrate. The ranging principle is based on Time-of-Flight (ToF) ranging technology. Assuming the distance between the antenna element in the radar antenna assembly and the target is s, the time it takes for the electromagnetic wave emitted by the antenna element to reach the target, be reflected, and then be received by the antenna element is t. Therefore, 2s = c·t, where c is the speed of electromagnetic wave propagation, i.e., the speed of light. For a Frequency Modulated Continuous Wave (FMCW) radar antenna, the frequency change at time t is f. b Then f b = u·t, where u is the frequency change of the FMCW per unit time, which is a constant. Therefore, we have: f is read out through frequency mixing. b This allows you to calculate the distance between the antenna element and the target.

[0072] In some embodiments, such as Figure 2 As shown, the display substrate also includes: a plurality of thin-film transistors (TFTs); the thin-film transistors (TFTs) include: an active layer 8, a gate G, a source S and a drain D.

[0073] In some embodiments, at least a portion of the thin-film transistors are located in the display area. Specifically, the display substrate includes a plurality of sub-pixel units arranged in an array in the display area, each sub-pixel unit including at least one thin-film transistor. In some embodiments, such as Figure 1 As shown, the display substrate also includes multiple signal lines 7; some of the signal lines 7 are electrically connected to sub-pixel units (not shown). For example, the multiple signal lines 7 include a data line 701; the data line 701 is electrically connected to the drain (not shown) of the thin-film transistor of the sub-pixel unit (not shown). The multiple signal lines also include multiple scan lines, which are electrically connected to the gate of the thin-film transistor of the sub-pixel unit.

[0074] In some embodiments, such as Figure 2 As shown, the plurality of conductive layers 2 include:

[0075] The first conductive layer 201 is located on one side of the substrate 1 and includes the gate G of the thin film transistor TFT and a scan line (not shown).

[0076] The second conductive layer 202 is located on the side of the first conductive layer 201 away from the substrate 1, and includes the source S and drain D of the thin-film transistor TFT, as well as data lines (not shown).

[0077] In some embodiments, such as Figure 2 As shown, the thin-film transistor (TFT) has a top-gate structure, meaning that the gate G is located on the side of the active layer 8 away from the substrate 1.

[0078] The display substrate also includes: a buffer layer 9 located between the substrate 1 and the active layer 8, a gate insulating layer 10 located between the gate G and the active layer 8, and an interlayer insulating layer 11 located between the gate G and the source S and the drain D.

[0079] In some embodiments, the side of the source and drain electrodes facing away from the substrate also includes a passivation layer.

[0080] In some embodiments, the substrate is a glass substrate; for example, the thickness of the substrate is 0.5 millimeters (mm);

[0081] Both the first conductive layer and the second conductive layer are metallic conductive layers; the thickness of the first conductive layer and the second conductive layer is greater than or equal to 0.3 mm and less than or equal to 0.7 mm. For example, the thickness of the first conductive layer and the second conductive layer is 0.5 mm, and the surface resistance is 0.0041.

[0082] The gate insulating layer has a thickness of approximately 0.4 micrometers and a dielectric constant of 6.5, while the passivation layer has a thickness of approximately 0.6 micrometers and a dielectric constant of 6.5.

[0083] In some embodiments, the display substrate is applied to a liquid crystal display panel, serving as an array substrate for the liquid crystal display panel. The sub-pixel unit further includes a pixel electrode electrically connected to the drain of a thin-film transistor. The pixel electrode is located between the thin-film transistor and the substrate, or on the side of the passivation layer facing away from the substrate. The display substrate may also include a common electrode, which is disposed across its entire surface. When the pixel electrode is located on the side of the thin-film transistor facing away from the substrate, the common electrode is located between the pixel electrode and the passivation layer; or, the common electrode is located on the side of the pixel electrode facing away from the substrate. The common electrode and the pixel electrode comprise a transparent conductive material, such as indium tin oxide (ITO), with a thickness of, for example, 0.2 micrometers.

[0084] Alternatively, in some embodiments, the display substrate is applied to an electroluminescent display panel. The sub-pixel unit of the electroluminescent display panel further includes: a capacitor and a light-emitting device; for example, the sub-pixel unit may include: one or more thin-film transistors, and one or more capacitors electrically connected to the thin-film transistors. One electrode of the capacitor is disposed in the same layer as the gate, and the other electrode is disposed in the same layer as the source and drain. The light-emitting device includes an anode, a light-emitting functional layer, and a cathode stacked on the side of the thin-film transistor facing away from the substrate.

[0085] In some embodiments, such as Figure 1 As shown, the surrounding area NA includes:

[0086] At least one binding area NA101 is located on one side of the display area AA in the first direction Y;

[0087] Fan-out area NA102 is located in the first direction Y between display area AA and at least one binding area NA101; radar antenna assembly 3 is located at least in fan-out area NA102;

[0088] The display substrate also includes:

[0089] Multiple fan-out lines 4 extend through the fan-out region NA102 to the bonding region NA101; the multiple fan-out lines 4 are located in at least a portion of the multiple conductive layers 2; the orthographic projection of the radar antenna assembly 3 on the substrate 1 and the orthographic projection of the fan-out lines 4 on the substrate 1 do not overlap.

[0090] The display substrate provided in this embodiment has a non-overlapping projection of the radar antenna assembly onto the substrate and the fan-out line onto the substrate, so that the fan-out line will not block the radar antenna assembly and avoid affecting the ranging of the radar antenna assembly.

[0091] In some embodiments, such as Figure 1 As shown, the peripheral area NA includes: a first peripheral area NA1 and a second peripheral area NA2 located on both sides of the display area AA in the first direction Y, and a third peripheral area NA3 and a fourth peripheral area NA4 located on both sides of the display area AA in the second direction X; the fan-out area NA102 and the binding area NA101 are both located in the first peripheral area NA1.

[0092] In some embodiments, such as Figure 1 As shown, fan-out line 4 is electrically connected to signal line 7, meaning fan-out line 4 can be considered as a portion of signal line 7 extending to fan-out region NA102. At least a portion of the multiple fan-out lines 4 are electrically connected to data line 701. Of course, in some embodiments, some of the multiple fan-out lines are also electrically connected to scan lines. For example, scan lines extend to a third peripheral region and / or a fourth peripheral region and then extend along the third peripheral region and / or the fourth peripheral region towards the first peripheral region, where they are electrically connected to fan-out lines. Alternatively, the third peripheral region and / or the fourth peripheral region may also include a gate drive circuit, with multiple scan lines electrically connected to the gate drive circuit, and some fan-out lines also electrically connected to the gate drive circuit.

[0093] In some embodiments, the fan-out lines are located in the first conductive layer and / or the second conductive layer. For example, multiple fan-out lines may all be located in the first conductive layer or the second conductive layer. Alternatively, some fan-out lines may be located in the first conductive layer, and the remaining fan-out lines may be located in the second conductive layer, with at least a portion of the fan-out lines located in the first conductive layer and the fan-out lines located in the second conductive layer alternating in the second direction X. Of course, it is also possible that a portion of the fan-out lines located in the first conductive layer and the fan-out lines located in the second conductive layer alternating in the second direction X, or with some overlapping portions.

[0094] In some embodiments, the radar antenna assembly is located in a first conductive layer and / or a second conductive layer.

[0095] In some embodiments, the orthographic projection of the radar antenna assembly onto the substrate in the second direction X is located on one side of the multiple fan-out lines. That is, the orthographic projection of the radar antenna assembly onto the substrate is located between the multiple fan-out lines and the edge of the display substrate. This avoids the arrangement of the radar antenna assembly affecting the wiring space of the multiple fan-out lines.

[0096] Alternatively, in some embodiments, such as Figure 1 As shown, the peripheral area NA includes multiple binding areas NA101 arranged along the second direction X; the second direction X intersects the first direction Y; Figure 1 In this example, the second direction X is perpendicular to the first direction Y.

[0097] Multiple fan-out lines 4 are divided into multiple fan-out line groups 5 arranged along the second direction X. Multiple fan-out lines 4 in one fan-out line group 5 extend to the same binding area NA101, and multiple fan-out lines 4 in different fan-out line groups 5 extend to different binding areas NA101.

[0098] The orthographic projection of the radar antenna assembly 3 onto the substrate 1 is located between the orthographic projections of two adjacent fan-out line groups 5 onto the substrate 1.

[0099] The display substrate provided in this disclosure has a radar antenna assembly whose orthographic projection onto the substrate is located between the orthographic projections of two adjacent fan-out line groups onto the substrate. This is closer to the central region of the display substrate compared to the case where the orthographic projection of the radar antenna assembly onto the substrate is located between multiple fan-out lines and the edge of the display substrate. Since users typically use display products directly in front of the central region of the display substrate, the closer proximity of the radar antenna assembly to the central region helps to shorten the distance between the radar antenna assembly and the user, thereby reducing the detection distance of the radar antenna assembly and improving the detection yield.

[0100] In some embodiments, such as Figure 1 , Figures 3-6 As shown, the radar antenna assembly 3 includes: at least one antenna element 301, and a radar signal line 302 electrically connected to at least one antenna element 301;

[0101] The bonding area includes multiple first bonding pins 601 and multiple second bonding pins 602; the fan-out line 4 is electrically connected to the first bonding pins 601, and the radar signal line 302 extends to the bonding area and is electrically connected to the second bonding pins 602.

[0102] in, Figure 1 , Figure 3 The radar antenna assembly 3, which includes multiple antenna elements 301, is illustrated as an example. Figures 4-6Only one antenna element 301 is shown in the image.

[0103] In some embodiments, such as Figures 3-6 As shown, the antenna unit 301 includes a transmitting unit 3011 and a receiving unit 3012.

[0104] In some embodiments, the transmitting unit converts the high-frequency signal transmitted by the radar signal line into electromagnetic radiation, i.e., the transmitting unit is used to radiate electromagnetic waves, and the receiving unit is used to receive electromagnetic waves.

[0105] In some embodiments, such as Figure 3 , Figure 4 As shown, the transmitting unit 3011 and the receiving unit 3012 in the antenna unit 301 are arranged along the second direction X;

[0106] The transmitting unit 3011 and the receiving unit 3012 are electrically connected to the same radar signal line 302.

[0107] In some embodiments, such as Figure 3 As shown, the pattern of the transmitting unit 3011 and the receiving unit 3012 on the substrate 1 is a rectangle with a first recess 12 in the first direction Y; the radar signal line 302 is electrically connected to the transmitting unit 3011 and the receiving unit 3012 in the first recess 12.

[0108] In the first direction Y, the width of the first recess 12 is less than half the width of the pattern of the transmitting unit 3011 and the receiving unit 3012 on the substrate 1.

[0109] In some embodiments, Figure 3 The radar antenna assembly shown operates at a frequency of 24 MHz (GHz). The measurement range at 24 GHz is approximately 5 meters (m) to 30 meters.

[0110] In some embodiments, such as Figure 4 As shown, the pattern of the transmitting unit 3011 and the receiving unit 3012 on the substrate 1 includes a first strip portion 13, a second strip portion 14 and a third strip portion 15 connected in sequence, and the radar signal line 302 is electrically connected to the first strip portion 13.

[0111] The first strip portion 13 and the third strip portion 15 extend along the second direction X, and the second strip portion extends along the first direction Y. The length of the first strip portion 13 and the third strip portion 15 is greater than the length of the second strip portion 14. That is, the first strip portion 13, the second strip portion 14 and the third strip portion 15 connected in sequence form a groove shape, and the opening of the groove faces the side facing the second direction X.

[0112] In some embodiments, Figure 4The radar antenna assembly shown operates at a frequency of 2.4 GHz. This means that the operating frequency of the radar antenna assembly can be reduced by changing the patterns of the transmitting and receiving units.

[0113] It should be noted that when the radar antenna assembly operates at a frequency of 24 GHz, which is relatively high, it is prone to high losses and reduced radiation performance. This disclosure, however... Figure 4 The radar antenna assembly shown operates at a frequency of 2.4 GHz, which is relatively low and has low loss, thus ensuring the radiation performance of the transmitting unit.

[0114] In some embodiments, such as Figure 5 , Figure 6 As shown, the transmitting unit 3011 includes: multiple transmitting subunits 30111;

[0115] The receiving unit 3012 includes multiple receiving subunits 30121;

[0116] The radar signal line 302 includes a first radar signal line 3021 that is electrically connected to the transmitting unit 3011 in a one-to-one correspondence and a second radar signal line 3022 that is electrically connected to the receiving unit 3012 in a one-to-one correspondence.

[0117] The display substrate provided in this embodiment includes a transmitting unit comprising multiple transmitting subunits and a receiving unit comprising multiple receiving subunits, which can improve the detection range of the radar antenna.

[0118] In some embodiments, such as Figure 5 As shown, the transmitting unit 3011 and the receiving unit 3012 in the antenna unit 301 are arranged along the second direction X.

[0119] In some embodiments, such as Figure 5 As shown, the multiple transmitting sub-units 30111 in the transmitting unit 3011 are arranged along the first direction Y, and the multiple transmitting sub-units 30111 are all electrically connected to the first radar signal line 3021.

[0120] The multiple receiving sub-units 30121 in the receiving unit 3012 are arranged along the first direction Y, and the multiple receiving sub-units 30121 are all electrically connected to the second radar signal line 3022.

[0121] The display substrate provided in this embodiment includes a transmitting unit comprising multiple transmitting sub-units and a receiving unit comprising multiple receiving sub-units. The transmitting sub-units and receiving sub-units are arranged along a first direction Y, thereby providing good ranging angles in both the first direction Y and the second direction X. This is particularly beneficial for application scenarios where there is significant movement of the person in both the first direction Y and the second direction X. Figure 5The radar antenna assembly shown can meet the requirements in both the first direction Y and the second direction X, thus improving the detection effect.

[0122] In some embodiments, such as Figure 5 As shown, the pattern of the transmitting subunit 30111 and the receiving subunit 30121 on the substrate 1 is a rectangle with a second recess 16 in the first direction Y; the radar signal line 302 is electrically connected to the transmitting subunit 30111 or the receiving subunit 30121 in the second recess 16.

[0123] In the first direction Y, the width of the second recess 16 is less than half the width of the pattern of the transmitting subunit 30111 and the receiving subunit 30121 on the substrate 1.

[0124] In some embodiments, Figure 5 The radar antenna assembly shown operates at a frequency of 24 GHz.

[0125] In some embodiments, such as Figure 6 As shown, the transmitting unit 3011 and the receiving unit 3012 in the antenna unit 301 are arranged along the first direction Y.

[0126] In some embodiments, such as Figure 6 As shown, the plurality of transmitting subunits 30111 in the transmitting unit 3011 are arranged along the second direction X, and the plurality of receiving subunits 30121 in the receiving unit 3012 are arranged along the second direction X;

[0127] The first radar signal line 3021 includes: a first sub-signal line 30211 electrically connected to one of the transmitting sub-units 30111, and a second sub-signal line 30212 electrically connected to two adjacent transmitting sub-units 30111;

[0128] The second radar signal line 3022 includes: a third sub-signal line 30221 electrically connected to one of the receiving sub-units 30121, and a fourth sub-signal line 30222 electrically connected to two adjacent receiving sub-units 30121.

[0129] The embodiments provided in this disclosure are as follows: Figure 6 The radar antenna assembly shown can have a better detection range in the second direction X.

[0130] In some embodiments, such as Figure 6 As shown, the patterns of the transmitting subunit 30111 and the receiving subunit 30121 on the substrate 1 are rectangular.

[0131] In some embodiments, Figure 6 The radar antenna assembly shown operates at a frequency of 24 GHz.

[0132] Next, as Figure 6 Taking the antenna unit shown as an example, the S of the radar antenna assembly... 11 S 21 The parameters are explained. Among them, S 11 S represents the reflection coefficient. 11 The smaller the better, indicating that almost all electromagnetic waves are emitted with no reflection loss; S 21 S represents the transmission coefficient. 21 The larger the value, the higher the proportion of power input to the transmitting unit that is emitted as electromagnetic radiation. Typically, radar antenna components require S... 11 It needs to be below -10 dB, S 21 It needs to be greater than 0.7, i.e. -3dB. Figure 6 The antenna element shown has S 11 S 11 and S 21 Simulation results are as follows Figure 7 As shown, the gain (dBic) in different directions is as follows: Figure 8 As shown, the radiation pattern is as follows Figure 9 As shown. It can be seen that it includes... Figure 6 The radar antenna assembly of the antenna element shown has S 11 S 21 If the above requirements are met, the radar antenna assembly has a large gain in the range of -5° to 5°, which allows for a longer detection distance.

[0133] In some embodiments, the radar signal line and the antenna element are located on the same conductive layer. Alternatively, the radar signal line and the antenna element may be located on different conductive layers. Alternatively, the radar signal line or the antenna element may be divided into portions located on different conductive layers.

[0134] Based on the same inventive concept, embodiments of this disclosure provide a display panel, such as... Figure 10 As shown, the display panel includes the display substrate 18 provided in this embodiment of the present disclosure.

[0135] The display panel provided in this embodiment includes the above-mentioned display substrate. Since the display substrate includes a radar antenna assembly, the radar antenna assembly can be used to detect whether there is a person in front of the display panel, and then the display panel can be controlled to wake up (i.e. start up) or go into sleep according to the detection result, thereby achieving the effect of saving power consumption.

[0136] In some embodiments, the display panel is a liquid crystal display panel. For example... Figure 10 As shown, the display panel also includes:

[0137] The opposing substrate 17 is disposed opposite to the display substrate 18;

[0138] The liquid crystal layer 19 is located between the display substrate 18 and the opposing substrate 17.

[0139] In some embodiments, the opposing substrate includes: a second substrate, and a black matrix and a plurality of color resists located on the side of the second substrate facing the liquid crystal layer. The black matrix includes a plurality of opening regions, and the color resists are located at least within the opening regions.

[0140] In some embodiments, the display panel further includes: a first polarizer and a second polarizer; the first polarizer is located on the side of the opposing substrate away from the display substrate, and the second polarizer is located on the side of the display substrate away from the opposing substrate.

[0141] Alternatively, in some embodiments, the display substrate includes light-emitting devices, and the display panel is an electroluminescent display panel.

[0142] This disclosure provides a display device, such as... Figure 11 As shown, the display device includes:

[0143] The display panel 20 provided in this embodiment of the disclosure;

[0144] A driving device 22 is electrically connected to the display panel 20. The driving device 22 includes a radar driving chip 2201 and a data processing unit 2202. The radar driving chip 2201 is used to provide driving signals to the radar antenna assembly 3, control the radar antenna assembly 3 to transmit and receive signals, and process and output the signals received by the radar antenna assembly 3. The data processing unit 2202 is used to process the data output by the radar driving chip 2201, determine and store distance data.

[0145] The system controller 23 is electrically connected to the driver 22; the system controller 23 is used to: read the distance data stored in the data processing unit 2202, and control the display panel to start or go into sleep mode according to the relationship between the distance data and the start-up of the display panel.

[0146] The display device provided in this embodiment includes a display substrate of a display panel that includes a radar antenna assembly. This allows the radar antenna assembly to detect whether there is a person in front of the display device, and the device can be controlled to wake up (i.e. start up) or go into sleep mode based on the detection result, thereby achieving the effect of saving power consumption.

[0147] In some embodiments, the radar driver chip can control radar antenna assembly 1 to transmit and 1 to receive, 1 to transmit and 2 to receive, etc. When the radar driver chip controls the radar antenna assembly to transmit electromagnetic waves, it generates a high-frequency signal whose frequency changes linearly with time. During reception, the radar driver chip performs frequency shift calculations on the signal received by the radar antenna assembly through mixing.

[0148] In some embodiments, such as Figure 11As shown, the display device includes at least one printed circuit board 24 electrically connected to the display panel 21; the radar driver chip 2201 and the data processing unit 2202 are mounted on the same printed circuit board 24.

[0149] In some embodiments, the data processing unit is a microcontroller unit (MCU); the MCU includes a memory, the type of which is, for example, double data rate (DDR) random access memory (RAM);

[0150] The MCU acquires the output data of the radar driver chip through analog-to-digital conversion (ADC), processes it through its internal pre-set algorithm to convert it into distance data, realizes ranging, and stores the distance data in DDR RAM.

[0151] In some embodiments, such as Figure 11 As shown, the display device further includes at least one first circuit board 25; the two ends of the first circuit board 25 are respectively bound to the display panel 21 and the printed circuit board 24, that is, the printed circuit board 24 and the display panel 21 are electrically connected through the first circuit board 25.

[0152] It should be noted that, Figure 11 Taking a display device comprising two printed circuit boards 24 and four first circuit boards 25 as an example, each printed circuit board 24 is electrically connected to the same number of first circuit boards 25, that is, each printed circuit board 24 is electrically connected to two first circuit boards 25. Of course, in specific implementations, depending on the size of the display panel, fewer or more first circuit boards 25 and printed circuit boards 24 can be provided; for example, two printed circuit boards 24 and twelve first circuit boards 25 can be provided, with each printed circuit board 24 electrically connected to six first circuit boards 25.

[0153] In some embodiments, such as Figure 11 As shown, the first circuit board 25 is bonded to the bonding area NA101 in a one-to-one correspondence.

[0154] In some embodiments, the first circuit board is a chip-on-film (COF) circuit board, which is a circuit board in which an integrated circuit (IC) is fixed on a flexible circuit board.

[0155] In some embodiments, such as Figure 11 As shown, the display device also includes: a timing controller 26, at least one second circuit board 27, and a third circuit board 28;

[0156] Each printed circuit board 24 is electrically connected to the timing controller 26 via the second circuit board 27, and the timing controller 26 is electrically connected to the system controller 23 via the third circuit board 28.

[0157] In some embodiments, the timing controller is a timing control chip, and the system controller is a system control chip.

[0158] In some embodiments, the system controller is also used to run the operating system of the display device and the upper-layer applications of the display device. The system controller stores the activation relationship between distance data and the display panel. The system controller actively reads data from the MCU's DDR RAM. When it is determined, based on the distance measurement result and the activation relationship between the distance data and the display panel, that someone needs to be activated in front of the display device, the system controller controls the display panel to display the user interface. If it is determined, based on the distance measurement result and the activation relationship between the distance data and the display panel, that no one is in front of the display device, the system controller controls the display panel to remain in sleep mode.

[0159] In some embodiments, the system controller can also store the relationship between user distance and display panel brightness, thereby determining the brightness of the display panel after it is started based on the distance data stored in the data processing unit, and can also adjust the brightness of the display panel according to the relationship between user distance and display panel brightness, thereby reducing overall power consumption, protecting eyesight and improving lifespan.

[0160] In some embodiments, such as Figure 12 As shown, when the display panel 20 is a liquid crystal display panel, the display device further includes: a backlight module 21; the display panel 20 is located on the light-emitting side of the backlight module 21.

[0161] The display device provided in this disclosure is any product or component with display function, such as a television or monitor. Other essential components of this display device are understood by those skilled in the art and will not be described in detail here, nor should they be construed as limiting this disclosure. Implementation of this display device can refer to the embodiments of the display panel and display substrate described above; repeated details will not be repeated.

[0162] This disclosure provides a driving method for a display device, such as... Figure 13 As shown, it includes:

[0163] S101, the radar driver chip provides a drive signal to the radar antenna assembly, controls the radar antenna assembly to transmit and receive signals, and processes and outputs the signals received by the radar antenna assembly.

[0164] S102, The data processing unit processes the data output by the radar driver chip, determines and stores the distance data;

[0165] S103. The system controller reads the distance data stored in the data processing unit and controls the display panel to start or go into sleep mode based on the relationship between the distance data and the start-up of the display panel.

[0166] The driving method for the display device provided in this disclosure drives the radar antenna assembly included in the display substrate to transmit and receive signals, detects whether there is a person in front of the display device, and controls the display device to wake up (i.e. start up) or go into sleep mode based on the detection result, thereby achieving the effect of saving power consumption.

[0167] In some embodiments, the system controller stores the activation relationship between distance data and the display panel; the system controller actively reads the distance measurement results, i.e., distance data, stored in the data processing unit. When it is determined, based on the distance measurement results, i.e., distance data, and the activation relationship between the distance data and the display panel, that someone needs to be activated in front of the display device, the system controller controls the display panel to display the user interface; if it is determined, based on the distance measurement results, i.e., distance data, and the activation relationship between the distance data and the display panel, that no one is in front of the display device, the system controller controls the display panel to remain in sleep mode.

[0168] In some embodiments, the system controller reads distance data stored in the data processing unit to determine the brightness of the display panel after it is started, and adjusts the brightness of the display panel according to the relationship between the user's distance and the brightness of the display panel. This results in reduced overall power consumption, improved eye health, and increased lifespan.

[0169] In summary, the display substrate, display panel, display device, and driving method provided in this disclosure include a radar antenna assembly in the display substrate. When the display substrate is used in display products such as computers and televisions, the radar antenna assembly can detect whether someone is in front of the display substrate, and control the display product to wake up (i.e., start up) or go into sleep mode based on the detection result, thereby achieving power saving. Furthermore, the antenna assembly is located on at least one conductive layer, meaning the radar antenna assembly is integrated into the display substrate. The pattern of the radar antenna assembly can be fabricated simultaneously with the fabrication of the conductive layer of the display substrate, eliminating the need for separate fabrication and assembly of the radar antenna assembly. This simplifies the manufacturing process of display products with radar antenna assemblies and saves costs.

[0170] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0171] Obviously, those skilled in the art can make various modifications and variations to this disclosure without departing from its spirit and scope. Therefore, if such modifications and variations fall within the scope of the claims of this disclosure and their equivalents, this disclosure is also intended to include such modifications and variations.

Claims

1. A display substrate, wherein, The display substrate comprises: a substrate substrate comprising a display area and a peripheral area surrounding the display area; a plurality of conductive layers arranged in sequence on one side of the substrate substrate; a radar antenna assembly located in the peripheral area; the radar antenna assembly is located in at least one of the conductive layers. 2.The display substrate of claim 1, wherein, The peripheral area comprises: at least one binding area located on one side of the display area in a first direction; a fan-out area located between the display area and at least one of the binding areas in the first direction; the radar antenna assembly is located at least in the fan-out area; The display substrate further comprises: a plurality of fan-out lines extending from the fan-out area to the binding area; the plurality of fan-out lines are located in at least part of the plurality of conductive layers; the projection of the radar antenna assembly on the substrate substrate and the projection of the fan-out line on the substrate substrate do not overlap. 3.The display substrate of claim 2, wherein, The peripheral area comprises a plurality of binding areas arranged along a second direction; the second direction intersects the first direction; The plurality of fan-out lines are divided into a plurality of fan-out line groups arranged along the second direction, and the plurality of fan-out lines in one fan-out line group extend to the same binding area, and the plurality of fan-out lines in different fan-out line groups extend to different binding areas; The projection of the radar antenna assembly on the substrate substrate is located between the projections of adjacent two fan-out line groups on the substrate substrate.

4. The display substrate according to any one of claims 1 to 3, wherein The display substrate further comprises a plurality of thin film transistors; The conductive layer comprises: a first conductive layer comprising the gate of the thin film transistor; a second conductive layer comprising the source and drain of the thin film transistor; The radar antenna assembly is located in the first conductive layer and / or the second conductive layer.

5. The display substrate according to any one of claims 1 to 3, wherein The radar antenna assembly comprises at least one antenna unit and a radar signal line electrically connected to the at least one antenna unit; the antenna unit comprises a transmitting unit and a receiving unit; The peripheral area comprises a binding area, the binding area comprises a plurality of first binding pins and a plurality of second binding pins; the fan-out line is electrically connected to the first binding pin, and the radar signal line extends to the binding area and is electrically connected to the second binding pin. 6.The display substrate of claim 5, wherein, The transmitting unit and the receiving unit in the antenna unit are arranged along a second direction; the second direction intersects the first direction; The transmitting unit and the receiving unit are electrically connected to the same radar signal line. 7.The display substrate of claim 6, wherein, The pattern of the transmitting unit and the receiving unit on the substrate substrate is a rectangle with a first recess in the first direction; the radar signal line is electrically connected to the transmitting unit and the receiving unit in the first recess; In the first direction, the width of the first recess is less than half the width of the pattern of the transmitting unit and the receiving unit on the substrate substrate. 8.The display substrate of claim 6, wherein, The pattern of the transmitting unit and the receiving unit on the substrate substrate comprises a first strip part, a second strip part and a third strip part connected in sequence, and the radar signal line is electrically connected to the first strip part; The first strip part and the third strip part extend along a second direction, the second strip part extends along a first direction, and the lengths of the first strip part and the third strip part are greater than the length of the second strip part. 9.The display substrate of claim 5, wherein, The transmitting unit comprises a plurality of transmitting sub-units. The receiving unit comprises a plurality of receiving sub-units. The radar signal lines comprise first radar signal lines electrically connected to the transmitting units one by one and second radar signal lines electrically connected to the receiving units one by one. 10.The display substrate of claim 9, wherein, The plurality of transmitting sub-units in the transmitting unit are arranged along a first direction, and each of the plurality of transmitting sub-units is electrically connected to the first radar signal line. The plurality of receiving sub-units in the receiving unit are arranged along the first direction, and each of the plurality of receiving sub-units is electrically connected to the second radar signal line. 11.The display substrate of claim 10, wherein, The patterns of the transmitting sub-units and the receiving sub-units on the substrate are rectangles having second recesses in the first direction; the radar signal lines are electrically connected to the transmitting sub-units or the receiving sub-units at the second recesses; In the first direction, the width of the second recess is less than half of the width of the pattern of the transmitting sub-units or the receiving sub-units on the substrate. 12.The display substrate of claim 9, wherein, The plurality of transmitting sub-units in the transmitting unit are arranged along a second direction, and the plurality of receiving sub-units in the receiving unit are arranged along the second direction. The first radar signal lines comprise first sub-signal lines electrically connected to one of the transmitting sub-units and second sub-signal lines electrically connected to adjacent two of the transmitting sub-units. The second radar signal lines comprise third sub-signal lines electrically connected to one of the receiving sub-units and fourth sub-signal lines electrically connected to adjacent two of the receiving sub-units. 13.The display substrate of claim 12, wherein, The patterns of the transmitting sub-units and the receiving sub-units on the substrate are rectangles.

14. A display panel, wherein, The display panel comprises the display substrate according to any one of claims 1-13.

15. The display panel of claim 14, wherein, Further comprising: a counter substrate arranged opposite to the display substrate; a liquid crystal layer between the display substrate and the counter substrate.

16. A display device comprising: The display device comprises: the display panel according to claim 14 or 15; a driving device electrically connected to the display panel; the driving device comprises a radar driving chip and a data processing unit; the radar driving chip is configured to provide a driving signal to the radar antenna assembly, control the radar antenna assembly to transmit and receive signals, and process and output the signals received by the radar antenna assembly; the data processing unit is configured to process, determine, and store distance data output by the radar driving chip; a system control device electrically connected to the driving device; the system control device is configured to read the distance data stored by the data processing unit, and control the display panel to start or sleep according to a start relationship between the distance data and the display panel.

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