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Electrowetting support plate with hydrophilic sog material and its preparation method, electrowetting display

A support plate and electrowetting technology, applied in the field of electrowetting, can solve the problems of strong water absorption of organosiloxane, inability to effectively prevent ink jumping phenomenon, thermal instability, etc., to increase hydrophilicity and hydrophilicity High and uniform, uniform hydrophilic effect

Active Publication Date: 2018-02-27
SOUTH CHINA NORMAL UNIVERSITY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the hydrophobic region and the hydrophilic region formed by this method are on the same plane, which still cannot effectively prevent the so-called ink jumping phenomenon.
Moreover, organosiloxane has strong water absorption, is thermally unstable, and is easily hydrolyzed to become hydrophilic.

Method used

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  • Electrowetting support plate with hydrophilic sog material and its preparation method, electrowetting display
  • Electrowetting support plate with hydrophilic sog material and its preparation method, electrowetting display
  • Electrowetting support plate with hydrophilic sog material and its preparation method, electrowetting display

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Embodiment approach 1

[0063] Implementation mode one, such as image 3 shown. This solution is preferably applicable to hydrophilic SOG materials with a baking temperature of ≤150° C., so as to reduce damage to the pixel wall 20 caused by baking. More preferably, it is suitable for hydrophilic SOG materials with a baking temperature of ≤120°C; even more preferably, it is suitable for hydrophilic SOG materials with a baking temperature of ≤100°C.

[0064] First, a substrate 7 is provided, an electrode 17 is arranged on the substrate 7, and a hydrophobic insulating layer 15 is arranged on the electrode; as image 3 (a). Of course, a dielectric layer 16 may also be provided between the electrode 17 and the hydrophobic insulating layer 15 .

[0065] The next step of manufacturing is to arrange the pixel wall 20 material layer on the surface of the hydrophobic insulating layer 15, such as image 3 (b). The material of the pixel wall 20 may be photoresist (for example, SU-8), which is pre-dried afte...

Embodiment approach 2

[0077] Implementation mode two, such as Figure 4 shown. This solution is preferably applicable to hydrophilic SOG materials with a baking temperature ≥ 120°C. Further preferably, it is suitable for a hydrophilic SOG material with a baking temperature ≥ 150°C.

[0078] First, a substrate 7 is provided, an electrode 17 is arranged on the substrate 7, and a hydrophobic insulating layer 15 is arranged on the electrode; as Figure 4(a). Of course, a dielectric layer 16 may also be provided between the electrode 17 and the hydrophobic insulating layer 15 .

[0079] The next step of manufacture is to prepare the pixel wall 20 as Figure 4 (b)~4(c). The pixel wall 20 can be arranged on the surface of the hydrophobic insulating layer 15 in the first region 27 by a known method, and has a convex shape. A known method may include spin-coating a pixel wall material on the surface, the material may be photoresist (for example, SU-8), for photoresist pixel wall material, the pixel wa...

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Abstract

An electrowetting support plate having an SOG material and preparation method thereof, the support plate (5, 6) comprising a substrate (7), an electrode (17) located on the substrate (7), and a hydrophobic insulating layer (15) provided on the electrode (17); the hydrophobic insulating layer (15) is provided with pixel walls (20) thereon; the pixel walls (20) are provided with a hydrophilic SOG material layer on an upper surface thereof, or the pixel walls (20) are made of the hydrophilic SOG material. Also provided is an electrowetting display (1) having the support plate (5, 6). The hydrophilicity of the upper surface of the pixel wall (20) is increased by providing the hydrophilic SOG material layer on the upper surface of the pixel wall (20), thus ensuring the pixel walls (20) made of different materials to have a uniform hydrophilicity, and enabling the hydrophilicity of each region to be uniform. Alternatively, the hydrophilic SOG material is directly selected to prepare the high-hydrophilicity pixel wall (20), thus enabling the surface of the pixel wall (20) in an electrowetting process to have a higher and uniform hydrophilicity, ensuring that a first fluid (11) does not pass over a wall, increasing the quality and reliability of a product, and enabling use in an electrowetting device.

Description

technical field [0001] The invention relates to the technical field of electrowetting, in particular to an electrowetting support plate with a hydrophilic SOG material and a preparation method thereof, and an electrowetting display comprising the support plate. Background technique [0002] The electrowetting display device includes a fluid chamber and an electrode structure, wherein the fluid chamber contains a non-conductive first fluid (alkane, etc.), a conductive second fluid (water or salt solution), and the fluids are in contact with each other and are immiscible. For example, patent CN102792207A describes an electrowetting display device, which includes two support plates, and a wall pattern, that is, a pixel wall, is arranged on one of the support plates. Obtained by the engraving process, the area formed by the pixel grid surrounded by the pixel wall is the display area, and the electrowetting display device produces a display effect on this display area. The non-c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L21/77G02F1/167
CPCG02B26/005G02B26/00
Inventor 周国富李发宏罗伯特·安德鲁·海耶斯窦盈莹
Owner SOUTH CHINA NORMAL UNIVERSITY
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