CN-122029044-A - Glass substrate module arranged on vehicle

Abstract

The glass substrate module may include a first glass substrate, a second glass substrate formed by laminating the first glass substrate, an antenna pattern formed on a first surface of the first glass substrate, an AMC (ARTIFICIAL MAGNETIC conductor) structure formed between a second surface of the first glass substrate and the first surface of the second glass substrate, and a PRS (partial reflector surface partial reflection surface) structure formed on a second surface of the second glass substrate.

Inventors

• CUI GUOXIAN
• Zheng Guangzai
• ZHENG BINGYUN
• LI SUYAN
• JIN DONGCHEN
• JIN YISHAN

Assignees

• LG电子株式会社

Dates

Publication Date

20260512

Application Date

20231030

Claims (20)

1. 1. A glass substrate module, comprising: A first glass substrate; a second glass substrate formed by laminating the first glass substrate; an antenna pattern formed on a first surface of the first glass substrate; AMC, artificial magnetic conductor structure formed between the second surface of the first glass substrate and the first surface of the second glass substrate; a reflector formed on the first surface of the first glass substrate and in a region facing the AMC structure, and PRS, a partially reflective surface structure, is formed on the second surface of the second glass substrate.
2. 2. The glass substrate module of claim 1, wherein, The PRS structure is formed to reflect a portion of a signal radiated from the antenna pattern, and transmit the remaining portion of the signal, The transmission angle of the signal transmitted through the PRS structure is formed to be different from the incidence angle of the signal, and the transmission angle realizes the steering steer of the wavefront wavefront of the signal transmitted through the PRS structure, The AMC structure is formed to reflect a signal incident after being reflected by the PRS structure so that the signal is incident to the PRS structure.
3. 3. The glass substrate module of claim 1, wherein, The reflector includes: A first reflector disposed apart from one end of the antenna pattern, and And a second reflector disposed apart from the other end of the antenna pattern.
4. 4. The glass substrate module of claim 1, wherein, The distance between the reflector and the third antenna pattern part formed with the antenna pattern is set to be more than 0.03 times of the wavelength corresponding to the lowest operating frequency of the WiFi band.
5. 5. The glass substrate module according to claim 3, wherein, The AMC structure includes: A first AMC structure formed in a region facing the first reflector, and And a second AMC structure formed in a region facing the second reflector.
6. 6. The glass substrate module of claim 1, wherein, The basic unit of the AMC structure includes: A first metal pattern whose inner side length is formed to be a first length and having a first width; A second metal pattern arranged to wrap the first metal pattern, the inner side being formed to have a second length longer than the first length and having a second width, and And a third metal pattern configured to wrap the second metal pattern, the inner side length being formed to be longer than the second length by a third length, and having a third width.
7. 7. The glass substrate module of claim 6, wherein, The second width is formed to be narrower than the first width, the third width is formed to be narrower than the second width, In the AMC structure, a plurality of basic units are arranged N along the X-axis direction and M along the Y-axis direction.
8. 8. The glass substrate module of claim 5, wherein, The antenna pattern is arranged in a region having a first width along the X-axis direction and a first length along the Y-axis direction, The PRS structure includes a plurality of PRS patterns disposed parallel to and apart from the X-axis direction in a region having a second width along the X-axis direction and a first length along the Y-axis direction, The plurality of PRS patterns includes a plurality of first PRS patterns disposed apart from one end of the antenna pattern and a plurality of second PRS patterns disposed apart from the other end of the antenna pattern.
9. 9. The glass substrate module of claim 8, wherein, The plurality of PRS patterns further includes: a third PRS pattern formed in a third region facing the region where the antenna pattern is arranged, The center of the third PRS pattern and the center of the antenna pattern are disposed at the same point.
10. 10. The glass substrate module of claim 8, wherein, The plurality of first PRS patterns includes a first sub-pattern, a second sub-pattern, and a third sub-pattern arranged in a direction away from the antenna pattern, The plurality of second PRS patterns includes a fourth sub-pattern, a fifth sub-pattern, and a sixth sub-pattern arranged in a direction away from the antenna pattern, The first interval between the first sub-pattern and the second sub-pattern is formed to be greater than the second interval between the second sub-pattern and the third sub-pattern, The fourth interval between the fourth sub-pattern and the fifth sub-pattern is formed to be greater than the fifth interval between the fifth sub-pattern and the sixth sub-pattern.
11. 11. The glass substrate module of claim 10, wherein, The third interval between the first sub-pattern and the antenna pattern is smaller than the first interval and larger than the second interval, The sixth interval between the fourth sub-pattern and the antenna pattern is smaller than the fourth interval and larger than the fifth interval.
12. 12. The glass substrate module of claim 1, further comprising: a transparent antenna module arranged between the first glass substrate and the second glass substrate, Wherein the transparent antenna module includes a first antenna pattern portion and a second antenna pattern portion, The antenna pattern is disposed between the first antenna pattern portion and the second antenna pattern portion.
13. 13. The glass substrate module of claim 12, further comprising: a control part for controlling the transparent antenna module, and A connection part for electrically connecting the transparent antenna and the control part, Wherein the connection part forms a flexible printed circuit board and a coaxial cable, The flexible printed circuit board is formed of a first region and a second region, wherein the first region is located between the first glass substrate and the second glass substrate, the second region is located outside either the first glass substrate or the second glass substrate, A partial region of the first region is electrically connected to the transparent antenna module, A partial region of the second region is electrically connected to the coaxial cable, And forming the antenna pattern in other partial areas of the second area.
14. 14. A flexible printed circuit substrate composed of a plurality of layers, the flexible printed circuit substrate comprising: a first antenna connection portion and a second antenna connection portion that connect the first antenna pattern portion and the second antenna pattern portion, the first antenna pattern portion and the second antenna pattern portion being formed on a transparent substrate located between the first glass substrate and the second glass substrate; an antenna pattern formed on a first surface of the first glass substrate; a first metal structure formed between the second surface of the first glass substrate and the first surface of the second glass substrate; A second metal structure formed on the second surface of the second glass substrate, and And a third metal structure formed on the first surface of the first glass substrate and in a region facing the first metal structure.
15. 15. The flexible printed circuit substrate of claim 14, wherein, The second metal structure is formed to reflect a portion of the signal radiated from the antenna pattern and transmit the remaining portion of the signal, The transmission angle of the signal transmitted through the second metal structure is formed to be different from the incident angle of the signal, and the transmission angle realizes the turning of the direction of the wavefront wavefront of the signal transmitted through the PRS structure, namely steer, The first metal structure is formed to reflect a signal incident after being reflected by the second metal structure so that the signal is incident on the second metal structure.
16. 16. The flexible printed circuit substrate of claim 14, wherein, The third metal structure includes: A first reflector disposed apart from one end of the antenna pattern, and And a second reflector disposed apart from the other end of the antenna pattern.
17. 17. The flexible printed circuit substrate of claim 16, wherein, The first metal structure includes: A first AMC structure formed in a region facing the first reflector, and And a second AMC structure formed in a region facing the second reflector.
18. 18. The flexible printed circuit substrate of claim 14, wherein, The antenna pattern is arranged in a region having a first width along the X-axis direction and a first length along the Y-axis direction, The second metal structure includes a plurality of PRS patterns which are arranged parallel to and apart from the X-axis direction in a region having a second width along the X-axis direction and a first length along the Y-axis direction, The plurality of PRS patterns includes a plurality of first PRS patterns disposed apart from one end of the antenna pattern and a plurality of second PRS patterns disposed apart from the other end of the antenna pattern.
19. 19. The flexible printed circuit substrate of claim 18, wherein, The plurality of PRS patterns further includes: a third PRS pattern formed in a third region facing the region where the antenna pattern is arranged, Wherein the center of the third PRS pattern and the center of the antenna pattern are disposed at the same point.
20. 20. The flexible printed circuit substrate of claim 14, wherein, The basic unit of the first metal structure includes: A first metal pattern whose inner side length is formed to be a first length and having a first width; A second metal pattern arranged to wrap the first metal pattern, the inner side being formed to have a second length longer than the first length and having a second width, and A third metal pattern configured to wrap the second metal pattern, the inner side length being formed to be a third length longer than the second length, and having a third width, In the first metal structure, the plurality of basic units are arranged in the X-axis direction by N and in the Y-axis direction by M.

Description

Glass substrate module arranged on vehicle Technical Field The present disclosure relates to a glass substrate module disposed in a vehicle. Particular embodiments relate to a glass substrate module including a transparent antenna in a vehicle glazing. Other embodiments relate to a flexible printed circuit substrate that is configurable to a vehicle glazing and is composed of multiple layers. Background A vehicle (vehicle) is capable of wireless communication services with other vehicles or surrounding objects, infrastructure, or base stations. In this regard, various communication services may be provided through a wireless communication system employing an LTE communication technology or a 5G communication technology. On the other hand, a part of the LTE band may be allocated for providing the 5G communication service. On the other hand, the vehicle body and the vehicle roof are formed of a metal material, and there is a problem in that radio waves are shielded. Thus, an additional antenna structure can be disposed on the upper portion of the vehicle body or the ceiling. Alternatively, when the antenna structure is disposed in a lower portion of the vehicle body or the ceiling, the vehicle body or the ceiling portion corresponding to the antenna disposition region may be formed of a non-metallic material. But from a design aspect, the vehicle body or the roof needs to be integrally formed. In this case, the appearance of the vehicle body or the ceiling may be formed of a metal material. This causes a problem that the antenna efficiency may be greatly reduced by the vehicle body or the ceiling. Regarding this problem, in order to increase the communication capacity without changing the design of the vehicle, a transparent antenna may be disposed on glass (glass) corresponding to the window of the vehicle. However, the antenna radiation efficiency and the impedance bandwidth (IMPEDANCE BANDWIDTH) characteristics are deteriorated due to the electrical loss (ELECTRICAL LOSS) of the transparent antenna. On the other hand, an antenna of a different type from the transparent antenna may be disposed on the vehicle glass together with the transparent antenna. In this regard, the transparent antenna may be designed to radiate a plurality of signals in the 4G/5G wireless communication band. An antenna of a different type from the transparent antenna may be formed of a thin film material. The antenna of the film material can be designed to radiate a plurality of signals in Wi-Fi frequency bands (2.4 GHz, 5GHz and 7 GHz). In this regard, the antenna made of a thin film material may be disposed adjacent to the transparent antenna or may be disposed on the same layer. 2.4GHz having a long wavelength in the Wi-Fi band may cause interference between the antenna made of a thin film material and the transparent electrode forming the transparent antenna. Distortion (distortion) of the beam shape may occur due to interference between the antenna of the thin film material and the transparent electrode forming the transparent antenna. On the other hand, when the antenna module is disposed on the vehicle glass, the beam peaks of the radiation patterns of the plurality of antenna elements may be formed in other directions than the horizontal direction of the vehicle according to the inclination angle of the vehicle glass. Therefore, when the antenna module is disposed on the vehicle glass, there is a problem that the communication performance in the horizontal direction is degraded. Disclosure of Invention Technical problem to be solved The purpose of the present specification is to prevent the communication performance in the horizontal direction from being degraded when an antenna module is arranged on a vehicle glass. The purpose of the present specification is to change the direction of the beam pattern of an antenna element in the horizontal direction when an antenna module is arranged on a vehicle glass. The purpose of the present specification is to reduce the feed loss of a film antenna and to improve communication performance. The purpose of the present specification is to reduce interference between a plurality of antennas in a glass substrate module including a transparent antenna in a vehicle glass. The purpose of the present specification is to prevent distortion of the beam shape caused by interference between an antenna made of a thin film material and a transparent electrode forming a transparent antenna. Means for solving the technical problems The glass substrate module according to an aspect of the present specification for achieving the above or other objects may include a first glass substrate, a second glass substrate formed by laminating the first glass substrate, an antenna pattern formed on a first surface of the first glass substrate, an AMC (ARTIFICIAL MAGNETIC conductor) structure formed between a second surface of the first glass substrate and the first surface of the second glass substrate, and a PRS