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TFT substrate and scanned antenna having TFT substrate

一种扫描天线、基板的技术，应用在扫描天线领域，能够解决成本上升、相控阵列天线价格高等问题，达到成本降低的效果

Active Publication Date: 2019-04-26
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high price of existing phased array antennas has become an obstacle to the popularization of consumer products
In particular, when the number of antenna elements increases, the cost increases significantly

Method used

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  • TFT substrate and scanned antenna having TFT substrate
  • TFT substrate and scanned antenna having TFT substrate
  • TFT substrate and scanned antenna having TFT substrate

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0095] First, refer to figure 1 and figure 2 . figure 1 As described in detail, it is a schematic partial cross-sectional view near the center of the scanning antenna 1000A, figure 2 (a) and (b) are schematic plan views showing the TFT substrate 101A and the slot substrate 201 included in the scan antenna 1000A, respectively.

[0096] The scanning antenna 1000A has a plurality of antenna units U arranged two-dimensionally. In the scanning antenna 1000A, for example, the plurality of antenna units are arranged concentrically. In the following description, the region of the TFT substrate 101A and the region of the slot substrate 201 corresponding to the antenna unit U are referred to as “antenna unit region”, and the same reference numeral U as that of the antenna unit is assigned. Additionally, if figure 2 As shown in (a) and (b), in the TFT substrate 101A and the slot substrate 201, an area defined by a plurality of antenna element areas arranged two-dimensionally is ca...

no. 2 approach

[0330] In the previous embodiments, the upper surface of the planarization layer is lower than the upper surface of the patch electrode or the upper surface of the planarization layer is at the same height as the upper surface of the patch electrode. In this embodiment, the upper surface of the planarization layer is higher than the upper surface of the patch electrode.

[0331] refer to Figure 17 ~ Figure 20 Next, the scanning antenna 1000B of this embodiment and the TFT substrate 101B included in the scanning antenna 1000B will be described. Common reference numerals are assigned to components common to the previous embodiments, and explanations thereof are omitted.

[0332]

[0333] refer to Figure 17 (a), (b) and Figure 18 Next, the configuration of the antenna unit region U in the transmission / reception region R1 of the scanning antenna 1000A according to the present embodiment will be described.

[0334] Figure 17 (a) is a schematic plan view of the antenna un...

no. 3 approach

[0361] This embodiment is characterized in that the side taper angle of the opening of the planarization layer is small.

[0362] refer to Figure 25 ~ Figure 27 Next, the scan antenna 1000C of the present embodiment and the TFT substrate 101C included in the scan antenna 1000C will be described. Common reference numerals are assigned to components common to the previous embodiments, and explanations thereof are omitted.

[0363]

[0364] refer to Figure 25 (a), (b) of and Figure 26 Next, the configuration of the antenna unit region U in the transmission / reception region R1 of the scanning antenna 1000A according to the present embodiment will be described.

[0365] Figure 25 (a) is a schematic plan view of the antenna unit area U of the transmission / reception area R1 of the scan antenna 1000C. Figure 25 (b) is a schematic cross-sectional view of the TFT substrate 101C included in the scanning antenna 1000C along the Figure 25 A schematic cross-sectional view of t...

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Abstract

The present invention reduces cost while suppressing a decrease in antenna performance of a scanning antenna, and provides a TFT substrate capable of reducing cost while suppressing degradation of antenna performance of a scanning antenna. A TFT substrate 101A includes a dielectric substrate 1, a plurality of antenna element regions U provided on the dielectric substrate, each antenna element region including a TFT 10 and a patch electrode 15 electrically connected to a drain electrode 7D of the TFT, and a flattening layer 21 provided on the dielectric substrate, located above a layer 151 including the patch electrode, and formed of a resin.

Description

technical field [0001] The present invention relates to scanning antennas, and more particularly to scanning antennas (sometimes also called "liquid crystal array antennas") having an antenna unit (sometimes called "element antenna") having a liquid crystal capacitor, and a TFT substrate used for the scanning antenna. Background technique [0002] Antennas for mobile communication and satellite broadcasting require a function capable of changing the direction of a beam (referred to as "beam scanning" or "beam steering"). As an antenna having such a function (hereinafter referred to as "scanned antenna"), a phased array antenna including an antenna element is known. However, the high price of conventional phased array antennas has hindered their popularization in consumer products. In particular, when the number of antenna elements increases, the cost increases significantly. [0003] Therefore, scanning antennas utilizing the large dielectric anisotropy (birefringence) of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q3/26H01Q3/36H01Q21/00
CPCH01Q3/2676H01Q3/36H01Q21/00H01L27/1248H01L27/13H01Q3/44H01P1/181H01Q1/38H01L23/66H01L2223/6677H01Q21/22H01Q21/064
Inventor 美崎克纪
Owner SHARP KK
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