WO2018192401A1

WO2018192401A1 - Display panel, display substrate, method for fabricating display substrate and display device

Info

Publication number: WO2018192401A1
Application number: PCT/CN2018/082679
Authority: WO
Inventors: 韩艳玲; 董学; 吕敬; 王海生; 吴俊纬; 丁小梁; 郑智仁; 刘伟; 王鹏鹏; 曹学友; 张平
Original assignee: 京东方科技集团股份有限公司
Priority date: 2017-04-20
Filing date: 2018-04-11
Publication date: 2018-10-25
Also published as: CN107067969A

Abstract

A display substrate, a display panel, a display device and a method for fabricating the display substrate. A non-display area of a display substrate (1) or a non-light transmitting part of a display area comprises a radar antenna (2). The display panel and the display device are relatively thin.

Description

Display panel, display substrate, method of manufacturing display substrate, and display device

Related patent applications

The present application claims priority to Chinese Patent Application No. 201710262113.2, filed on Apr.

Technical field

The present disclosure relates to the field of display technologies, and in particular, to a display substrate, a display panel, a method of manufacturing the display panel, and a display device.

Background technique

Radar measurement and control technology is a kind of measurement and control technology for realizing human-computer interaction functions such as gesture recognition and somatosensory recognition. Compared with the technology of using dual camera, sound wave or optical tracking to sense human body movement to realize human-computer interaction function, radar measurement and control technology is used to realize people. The machine interaction function has the advantages of high precision, easy miniaturization and no interference from ambient light and temperature.

Summary of the invention

An aspect of the present disclosure provides a display substrate including a radar antenna located in a non-light transmitting portion or a non-display region of a display area of the display substrate. The radar antenna is configured to transmit and receive electromagnetic waves.

In some embodiments, the radar antenna includes a metal electrode, a trace connected to the metal electrode, and a metal layer.

In some embodiments, the display substrate includes a first surface and a second surface that are opposite each other. The metal electrode and the trace are on the first surface, and the metal layer is on the second surface.

In some embodiments, the display substrate is an array substrate, the non-display area includes a line fan-out area and a non-line fan-out area, the radar antenna is located in the non-line fan-out area, and the first surface is A surface on which a thin film transistor array is formed.

In some embodiments, the metal electrode and the trace are located in a region of the first surface corresponding to the non-line fan-out region, and the metal layer is located in the second surface corresponding to the non- The area of the line fanout area.

In some embodiments, the display substrate further includes a radar sensor chip. The radar sensor chip is electrically connected to the radar antenna through the metal electrode, and the radar sensor chip is located in the non-line fan-out area.

In some embodiments, the display substrate is a color film substrate. The second surface is a surface on which a color film layer is formed, the metal electrode and the trace are located in a region of the first surface corresponding to the non-display area, and the metal layer is located on the second surface The area corresponding to the non-display area.

In some embodiments, the display substrate further includes a radar sensor chip. The radar sensor chip and the radar antenna are electrically connected through the metal electrode, and the radar sensor chip is located in the non-display area of the color filter substrate.

In some embodiments, the display substrate further includes a flexible circuit board or a printed circuit board, the substrate including the radar sensor chip on the flexible circuit board or the printed circuit board.

Another aspect of the present disclosure provides a display panel. The display panel includes the display substrate according to any of the above embodiments of the present disclosure.

Yet another aspect of the present disclosure provides a display device. The display device includes the display panel according to any of the above embodiments of the present disclosure.

A further aspect of the present disclosure provides a method of fabricating a display substrate, comprising: providing a substrate; and providing a radar antenna in a non-transmissive portion or a non-display region of the display region of the substrate.

In some embodiments, the method of fabricating a display substrate further includes forming metal electrodes and traces of the radar antenna on a first surface of the display substrate, and forming on a second surface of the display substrate a metal layer of the radar antenna, wherein the first surface and the second surface are opposite each other.

In some embodiments, the first surface is a surface forming a thin film transistor array, and the non-display area includes a line fanout area and a non-line fanout area. Providing the radar antenna in the non-transmissive portion or the non-display region of the display area of the base substrate includes: forming a metal of the radar antenna in an area corresponding to the non-line fan-out area in the second surface And forming a metal electrode and a trace of the radar antenna in a region of the first surface corresponding to the non-line fan-out region. The metal electrode, the trace, and the film layer of the thin film transistor are formed by the same patterning process.

In some embodiments, the method of fabricating a display substrate further includes providing a radar sensor chip in the non-line fan-out region by a micro-transfer technique or a bonding technique. The radar sensor chip is electrically connected to the radar antenna through the metal electrode.

In some embodiments, the second surface is a surface on which a color film layer is formed. Providing the radar antenna in the non-transmissive portion or the non-display region of the display area of the base substrate includes: forming a metal layer of the radar antenna in a region corresponding to the non-display area in the second surface; And forming a metal electrode and a trace of the radar antenna in a region of the first surface corresponding to the non-display area.

In some embodiments, the method of fabricating a display substrate further includes providing a radar sensor chip in the non-display area by a micro transfer technique or a bonding technique. The radar sensor chip and the radar antenna are electrically connected through the metal electrode.

In some embodiments, the method of fabricating a display substrate further includes providing a flexible circuit board or a printed circuit board on the base substrate, and providing a radar sensor chip on the flexible circuit board or the printed circuit board . The radar sensor chip and the radar antenna are electrically connected by a metal electrode.

DRAWINGS

These and other aspects of the present disclosure will be apparent from the embodiments described hereinafter, and in <RTIgt;

1 is a schematic structural view of a display panel according to an embodiment of the present disclosure;

2 is a schematic plan view of a display panel according to an embodiment of the present disclosure;

3 is a schematic side view of a display panel of an embodiment of the present disclosure;

4a is a schematic plan view of a display panel in which a radar antenna is disposed according to an embodiment of the present disclosure;

4b is a schematic side view of a display panel with a radar antenna disposed in accordance with an embodiment of the present disclosure;

5a is a schematic top plan view of a display panel with a radar antenna disposed in some embodiments of the present disclosure;

5b is a schematic side view of a display panel with a radar antenna disposed in some embodiments of the present disclosure;

6 is a flowchart of a method of manufacturing a display panel according to an embodiment of the present disclosure;

FIG. 7 is a flowchart of a method of manufacturing a display panel according to an embodiment of the present disclosure;

FIG. 8 is a flowchart of a method of manufacturing a display panel according to an embodiment of the present disclosure.

detailed description

Embodiments of various aspects of the present disclosure will be described below in conjunction with the drawings.

According to the technique known to the inventors, in a display device to which radar measurement and control technology is applied, a structure is to solder a radar antenna to a driving PCB board using a high frequency PCB board manufacturing process. However, this technique has, at least in part, the following drawbacks. First, soldering the radar antenna to the driving PCB increases the thickness of the display device, which is detrimental to the trend of thinner and lighter display devices. In addition, since the driving PCB board is located at the back of the display panel, when a person interacts with the display device on the front side of the display panel, the electromagnetic wave signal of the radar antenna must be transmitted through the display area of the display panel. The display area of the display panel has numerous metal traces. These metal traces block and shield the electromagnetic wave signals emitted by the radar antenna, thereby seriously interfering with and attenuating the electromagnetic wave signals.

FIG. 1 illustrates a structural diagram of a display panel according to an embodiment of the present disclosure. The display panel includes a display substrate 1. The non-light transmitting portion or the non-display area of the display area of the display substrate 1 includes the radar antenna 2. The radar antenna 2 is used to transmit and receive electromagnetic waves. The radar antenna includes a metal electrode, a trace connected to the metal electrode, and a metal layer.

The radar antenna in this embodiment is located in the non-transmissive portion or the non-display region of the display region of the display substrate 1 of the display panel, as compared with the related art in which the radar antenna is soldered to the driving PCB of the display device.

In some embodiments, the radar antenna 2 is located in a non-transmissive portion of the display area of the display substrate 1. Therefore, the radar antenna 2 does not take up extra space. Moreover, the thickness of the display device employing the display panel provided by the present disclosure is smaller than that of a conventional display device.

In some embodiments, the radar antenna 2 is located in the non-display area of the display substrate 1. When the radar antenna 2 emits an electromagnetic wave signal, the electromagnetic wave signal does not need to pass through the display area of the display panel. Therefore, the electromagnetic wave signal is not blocked and shielded by the metal traces in the display area of the display panel.

Therefore, by adopting the display panel provided by the present disclosure, on the one hand, the thickness of the display device can be reduced, and on the other hand, the metal trace of the display area of the display panel can be prevented from causing interference and attenuation to the electromagnetic wave signal emitted by the radar antenna.

2 illustrates a top view of a display panel in accordance with an embodiment of the present disclosure, and FIG. 3 illustrates a side view of a display panel in accordance with an embodiment of the present disclosure. The display substrate includes a first surface and a second surface opposite to each other. A metal electrode and a trace of the radar antenna are located on the first surface, and a metal layer of the radar antenna is located on the second surface. The display panel generally includes two display substrates, which are an array substrate 11 and a color filter substrate 12, respectively. A cover glass 3 may also be included on the color filter substrate 12.

The array substrate 11 and the color filter substrate 12 respectively include a display area and a non-display area. It will be readily understood by those skilled in the art that, since the color filter substrate does not emit light, for the color filter substrate, the display area of the color filter substrate refers to the area corresponding to the display area of the array substrate (the light emitted by the display pixel forms a display screen). The non-display area of the film substrate refers to the area corresponding to the non-display area of the array substrate.

For example, the array substrate 11 includes a first display area a and a first non-display area b. The first non-display area b includes a line fanout area (fanout area) b1 and a non-line fanout area b2. When the display substrate is an array substrate, the first surface is a surface on which an array of thin film transistors is formed. The metal electrode and the trace are located in a region of the first surface corresponding to the non-line fan-out region, and the metal layer is located in the second surface corresponding to the non-line fan-out region region.

For example, the color filter substrate 12 includes a second display area c and a second non-display area d. When the display substrate is a color filter substrate, the second surface is a surface on which a color film layer is formed. The metal electrode and the trace are located in a region of the first surface corresponding to the non-display area, and the metal layer is located in an area of the second surface corresponding to the non-display area.

The first display area a of the array substrate 11 corresponds to the second display area c of the color filter substrate 12. The liquid crystal 4 is filled between the first display area a of the array substrate 11 and the second display area c of the color filter substrate 12. The line fan-out area b1 and the non-line fan-out area b2 of the array substrate 11 may not correspond to the color filter substrate 12. The specific arrangement of the metal electrodes, traces and metal layers will be shown in the following description and other figures.

In the embodiment of the present disclosure, the radar antenna 2 may be located on the array substrate 11 or on the color filter substrate 12.

In some embodiments, the display substrate is the array substrate 11, that is, when the radar antenna 2 is located on the array substrate 11, the radar antenna 2 may be specifically located in the non-line fan-out area b2 of the array substrate 11.

Since the line fan-out area b1 and the non-line fan-out area b2 of the array substrate 11 do not have corresponding color film substrates 12, the line fan-out area b1 and the non-line fan-out area b2 of the array substrate 11 and the glass cover 3 exist. Hollow area. In some embodiments, the radar antenna 2 can be disposed within a hollow region. This arrangement does not increase the thickness of the display panel and therefore does not affect the thickness of the display device. The display device according to an embodiment of the present disclosure has a reduced thickness with respect to the related art. On the other hand, the requirements for the thickness of the radar antenna employed in the embodiments of the present disclosure are also low. Such a radar antenna can be used in a display device according to an embodiment of the present disclosure as long as the thickness of the radar antenna is smaller than the thickness of the hollow region in a direction perpendicular to the light emitting surface of the display substrate, that is, in the viewing angle of FIG. Does not affect the thickness of the display device. In addition, since the radar antenna 2 is located in the first non-display area b of the array substrate 11, and the first non-display area b does not correspond to the color filter substrate 12, when the radar antenna 2 emits an electromagnetic wave signal, the electromagnetic wave signal hardly passes through the color The first display area a of the film substrate 12, that is, does not pass through the display area of the display panel. Thus, the electromagnetic wave signal is hardly blocked and shielded by the metal traces in the display area of the display panel. Therefore, interference and attenuation of the electromagnetic wave signal emitted by the color filter substrate 12 to the radar antenna can be avoided.

4a shows a top view of a display panel with a radar antenna arranged according to an embodiment of the present disclosure, and FIG. 4b shows a side view of the display panel. The radar antenna 2 may include a metal electrode 5, a wiring 6 connected to the metal electrode 5, and a metal layer. The metal layer can be used both as a ground plane and as a shield for glare. For example, the metal electrode 5 and the trace 6 are located in a region corresponding to the non-line fan-out region b2 in the surface (ie, the first surface) forming the thin film transistor array, and the metal layer 7 is located on the surface facing away from the thin film transistor array (ie, the first The area of the two surfaces corresponding to the non-line fan-out area b2.

In some embodiments, the radar antenna 2 may also be located in the non-transmissive portion of the display area a of the array substrate 11. This also reduces the thickness of the display device.

In some embodiments, the display substrate is a color filter substrate 12, that is, when the radar antenna 2 is located on the color filter substrate 12, the radar antenna 2 may be specifically located in the second non-display area d of the color filter substrate 12.

By arranging the radar antenna 2 on the second non-display area d of the color filter substrate 12, the electromagnetic wave signals emitted by the metal traces of the first display area a of the array substrate 11 (ie, the display area of the display panel) to the radar antenna 2 can be avoided. Interference and attenuation. Moreover, since the area of the second non-display area d of the color filter substrate 12 is large, the area occupied by the radar antenna 2 is large, and the manufacturing method is relatively simple.

Figure 5a shows a top view of a display substrate with a radar antenna arranged according to some embodiments of the present disclosure, and Figure 5b shows a side view of the display panel. Specifically, the metal layer 7 is located in a region corresponding to the second non-display region d in the surface on which the color film layer is formed (ie, the second surface), and the metal electrode 5 and the wiring 6 are located on the surface facing away from the color film layer ( That is, the area of the first surface) corresponding to the second non-display area d.

In some embodiments, the radar antenna 2 may also be located in the non-transmissive portion of the first display area c of the color filter substrate 12. By arranging the radar antenna 2 on the non-light transmitting portion of the first display region c of the array substrate 11, the thickness of the display device can also be reduced.

Since a partial region of the display substrate is utilized as the antenna dielectric substrate, the thickness of the display panel according to an embodiment of the present disclosure is reduced, or the thickness of the antenna used can be increased without changing the thickness, thereby reducing The difficulty of the antenna manufacturing process.

In the display substrate provided by the embodiment of the present disclosure, a radar sensor chip may also be included. The radar sensor chip and the radar antenna are electrically connected by a metal electrode. The radar sensor chip is used to drive the radar antenna.

The radar sensor chip can be arranged on the display substrate. For example, when the display substrate is the array substrate 11, the radar sensor chip may be specifically located in the non-line fan-out area b2 of the array substrate 11. For example, when the display substrate is the color filter substrate 12, the radar sensor chip may be specifically located in the second non-display area d of the color filter substrate 12. The radar sensor chip can be shortened by arranging both the radar sensor chip and the radar antenna in a non-display area of the display substrate (for example, the non-line fan-out area b2 of the array substrate 11 or the second non-display area d of the color filter substrate 12) The distance between the radar antenna and the radar antenna can reduce the gain attenuation of the radar antenna and improve the radar antenna chip driving effect on the radar antenna. The radar sensor chip can also be arranged on a flexible circuit board or a printed circuit board of the display panel.

It can be understood that when the radar measurement and control technology is applied to the display device, different types of display devices and different recognition modes adopt different radar frequency bands, and the corresponding recognition precision and the radar antenna size are also different. For example, when recognizing a human gesture, the recognition accuracy corresponding to the recognition distance of 5 cm to 5 m is 5 mm. When the shape of the radar antenna is square, the side length of the radar antenna is about 1 mm. The higher the radar frequency band used, the higher the recognition accuracy and the smaller the side length of the radar antenna.

Another aspect of the present disclosure provides a display panel. The display panel includes the display substrate according to the above embodiment of the present disclosure.

Yet another aspect of the present disclosure provides a display device. The display device includes the display panel according to the above embodiment of the present disclosure. The display device may specifically be a television, a mobile phone or a tablet computer using radar measurement and control technology.

A further aspect of the present disclosure provides a method of making a display substrate, which is schematically illustrated in FIG. The method for manufacturing the display panel may specifically include providing a base substrate (step S1), providing a radar antenna in the non-transmissive portion or the non-display region of the display region of the base substrate (step S2), and providing on the base substrate Radar sensor chip (step S3). The radar antenna is used to transmit and receive electromagnetic waves. The radar sensor chip and the radar antenna are electrically connected by a metal electrode. Compared with the related art, the radar antenna can be disposed in the non-display area of the display substrate of the display panel by using the method for manufacturing the display panel provided by the embodiment of the present disclosure, so that the radar antenna is not required to be disposed on the driving PCB. Thereby the thickness of the display device is reduced. In addition, since the radar antenna is located in the non-display area of the display substrate of the display panel, when the electromagnetic wave signal is emitted by the radar antenna, the electromagnetic wave signal hardly passes through the display area of the display panel, and thus is hardly affected by the metal trace of the display area of the display panel. Occlusion and shielding. This in turn avoids the interference and attenuation of the metal traces on the electromagnetic wave signals emitted by the radar antenna.

FIG. 7 illustrates sub-steps that may be specifically included in step S2 in an embodiment of a method of fabricating a display panel in accordance with the present disclosure when the provided display substrate is an array substrate.

In some embodiments, step S2 may specifically include forming a metal layer in a region facing the non-line fan-out region in a surface facing away from the thin film transistor array (ie, the second surface) (step S21), and forming a thin film transistor array A region corresponding to the non-line fan-out region in the surface (i.e., the first surface) forms a metal electrode and a trace (step S22).

In some embodiments, the metal layer can be used as a ground plane and a occlusion layer. The metal layer may be specifically made of any one of Cu, TiAlTi, AlNd, MoNd, and other suitable metal materials.

It should be noted that when the radar antenna is disposed in the non-line fan-out area of the array substrate, the metal electrodes and the traces in the radar antenna can be simultaneously formed by the same patterning process as the film layer of the thin film transistor in the array substrate. For example, a mask can be used to simultaneously deposit and etch a metal layer, a trace, and a thin film of a thin film transistor. Adopting this method of production does not increase the process and cost.

After forming the metal layer, the metal electrode, and the trace, metal (eg, gold) plating treatment can be performed on both sides of the array substrate to ensure signal connection.

In some embodiments, step S2 (particularly between step S21 and step S22) may further comprise forming an insulating layer on the metal layer. The insulating layer is used to protect the metal layer from damage during subsequent fabrication processes, such as forming metal electrode traces. For example, an insulating layer may be formed only on the non-plating region of the metal layer for subsequent plating in the plating region of the metal layer. For example, a high temperature adhesive tape for covering the metal layer may be applied to the metal layer, and then an insulating layer may be formed on the high temperature adhesive tape. In this way, it is only necessary to remove the high temperature tape to plate the material. For example, the insulating layer may be a SiNx layer or an SiOx layer.

Figure 8 shows sub-steps that may be specifically included in step S2 in an embodiment of the method of making a display panel in accordance with the present disclosure when the display substrate provided is a color film substrate.

In some embodiments, step S2 may include: forming a metal layer in a region corresponding to the non-display region in a face on which the color film layer is formed with the color film layer (ie, the second surface) (step S21'), and in color Metal electrodes and traces are formed in a region of the film substrate facing away from the color film layer (ie, the first surface) corresponding to the non-display region (step S22').

It should be noted that when manufacturing the radar antenna, a metal layer may be formed first, then a metal electrode and a trace may be formed, or a metal electrode and a trace may be formed first, and then a metal layer is formed. The disclosure does not specifically limit this. The specific order depends on the actual process conditions.

In some embodiments, providing the radar sensor chip on the flexible circuit board or printed circuit board of the display panel can include: drawing the radar sensor chip out to the flexible circuit board or the printed circuit board using the pads of the line fan-out area of the array substrate.

In some embodiments, the display substrate is an array substrate, and providing the radar sensor chip on the display substrate specifically includes: providing the radar sensor chip to the non-line fan-out area of the array substrate by micro transfer technology or bonding technology.

In some embodiments, the display substrate is a color film substrate, and providing the radar sensor chip on the display substrate specifically includes: providing the radar sensor chip to the non-display area of the color filter substrate by a micro transfer technology or a bonding technology.

In summary, the present disclosure provides a display substrate, a display panel, a display device, and a method of manufacturing the display substrate. The non-light transmitting portion or the non-display area of the display area of the display substrate has a radar antenna.

With the display substrate provided by the embodiment, the display panel and the display device of the present disclosure have a small thickness. Moreover, when the radar antenna emits an electromagnetic wave signal, the electromagnetic wave signal hardly passes through the display area of the display panel, thereby avoiding interference and attenuation of the electromagnetic wave signal emitted by the radar antenna by the metal trace of the display area of the display panel.

It will be appreciated that the above embodiments are described by way of example only. While the embodiments have been illustrated and described with reference to the drawings example. In addition, the terms first, second, third and similar terms in the description and the claims are used to distinguish similar elements and no one is used to describe the sequence or chronological order. It will be understood that the terms so used are interchangeable, where appropriate, and that the embodiments of the present disclosure described herein can operate in a sequence other than those described or illustrated herein.

Other variations to the disclosed embodiments can be understood and effected by those skilled in the <RTIgt; In the claims, the <RTIgt; "comprising"</RTI> does not exclude other elements or steps. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in the different dependent claims The computer program can be stored/distributed on a suitable medium, such as an optical storage medium or solid state medium provided with other hardware or provided as part of other hardware, but can also be distributed in other forms, such as via the Internet or other wired or wireless. Telecommunications system. Any reference signs in the claims should not be construed as limiting

Claims

A display substrate comprising a radar antenna located in a non-transmissive portion or a non-display region of a display area of the display substrate.
The display substrate of claim 1, wherein the radar antenna comprises a metal electrode, a trace connected to the metal electrode, and a metal layer.
The display substrate according to claim 2, wherein the display substrate comprises a first surface and a second surface opposite to each other, wherein the metal electrode and the trace are located on the first surface, and the metal layer is located Said second surface.
The display substrate according to claim 3, wherein the display substrate is an array substrate.
The display substrate according to claim 4, wherein said non-display area comprises a line fan-out area and a non-line fan-out area, and said radar antenna is located in said non-line fan-out area.
The display substrate according to claim 5, wherein said first surface is a surface on which an array of thin film transistors is formed, and said metal electrode and said trace are located in said first surface corresponding to said non-line fan-out region The region of the metal layer is located in the second surface corresponding to the non-line fan-out region.
The display substrate of claim 6, further comprising a radar sensor chip, wherein the radar sensor chip is electrically connected to the radar antenna through the metal electrode, and the radar sensor chip is located in the non-line fan-out area.
The display substrate according to claim 3, wherein the display substrate is a color filter substrate.
The display substrate according to claim 8, wherein the second surface is a surface on which a color film layer is formed, and the metal electrode and the trace are located in an area of the first surface corresponding to the non-display area The metal layer is located in a region of the second surface corresponding to the non-display area.
The display substrate according to claim 9, further comprising a radar sensor chip, wherein the radar sensor chip and the radar antenna are electrically connected through the metal electrode, and the radar sensor chip is located in the non-pixel of the color filter substrate Display area.
The display substrate of claim 1, wherein the non-display area comprises a flexible circuit board or a printed circuit board, the display substrate comprising a radar sensor chip on the flexible circuit board or the printed circuit board.
A display panel comprising the display substrate according to any one of claims 1-11.
A display device comprising the display panel according to claim 12.
A method of making a display substrate, comprising:

Providing a substrate; and

A radar antenna is provided in a non-transmissive portion or a non-display region of the display region of the base substrate.
The method of manufacturing a display substrate according to claim 14, further comprising forming a metal electrode and a trace of the radar antenna on a first surface of the display substrate, and forming on a second surface of the display substrate a metal layer of the radar antenna, wherein the first surface and the second surface are opposite each other.
A method of fabricating a display substrate according to claim 15, wherein said first surface is a surface on which a thin film transistor array is formed, and said non-display area comprises a line fan-out area and a non-line fan-out area, wherein said Providing the radar antenna in the non-transmissive portion or the non-display region of the display area of the base substrate includes:

Forming a metal layer of the radar antenna in a region of the second surface corresponding to the non-line fan-out region;

Forming a metal electrode and a trace of the radar antenna in a region of the first surface corresponding to the non-line fan-out region;

Wherein, the metal electrode, the trace and the film layer of the thin film transistor are formed by the same patterning process.
A method of fabricating a display substrate according to claim 16, further comprising providing a radar sensor chip in said non-line fan-out area by micro-transfer technique or bonding technique, wherein said radar sensor chip and said radar antenna pass The metal electrodes are electrically connected.
A method of manufacturing a display substrate according to claim 15, wherein said second surface is a surface on which a color film layer is formed, wherein said non-light-transmitting portion or non-display region in a display region of said base substrate Providing radar antennas includes:

Forming a metal layer of the radar antenna in a region of the second surface corresponding to the non-display area;

Metal electrodes and traces of the radar antenna are formed in regions of the first surface corresponding to the non-display area.
A method of manufacturing a display substrate according to claim 18, further comprising providing a radar sensor chip in said non-display area by a microtransfer technique or a bonding technique, wherein said radar sensor chip and said radar antenna pass said The metal electrode is electrically connected.
A method of manufacturing a display substrate according to claim 14, further comprising providing a flexible circuit board or a printed circuit board on said base substrate;

Providing a radar sensor chip on the flexible circuit board or the printed circuit board;

The radar sensor chip and the radar antenna are electrically connected by a metal electrode.