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A bistable current liquid display lower substrate and a display device including the same

An electrofluidic and bistable technology, applied in the field of electrowetting, can solve the problems of not having bistable state and reducing the energy consumption of display devices, and achieve the effect of simple structure, fast movement speed and low energy consumption

Active Publication Date: 2020-06-16
SOUTH CHINA NORMAL UNIVERSITY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most electrofluidic display devices are not bistable, that is, the maintenance of the image needs to provide a continuous voltage, which is undoubtedly not conducive to reducing the energy consumption of the display device

Method used

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  • A bistable current liquid display lower substrate and a display device including the same
  • A bistable current liquid display lower substrate and a display device including the same
  • A bistable current liquid display lower substrate and a display device including the same

Examples

Experimental program
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Embodiment 1

[0033] Embodiment 1 provides a bistable electrofluidic display device, which can be reflective, transmissive or transflective. The display device may be of the segmented display type, in which the image may be composed of segments, each segment comprising several picture elements. The display device may be of an active matrix driven display type, or a passively driven display device. Multiple cells can be monochrome. For color display devices, picture elements can be grouped, each group having a different color; alternatively, individual picture elements can also display different colors.

[0034] refer to Figure 1-2 , figure 1 is a cross-sectional view of the bistable electrofluidic display device of embodiment 1, the bistable electrofluidic display device of this embodiment includes a plurality of picture elements, in figure 1 and figure 2 Only one of the pixels is shown in . The horizontal extent of cell 1 is in figure 1 The two dotted lines 2 and 3 in indicate tha...

Embodiment 2

[0041] refer to Figure 10 , Figure 10 It is a top view of the lower substrate of the bistable electrofluid display in embodiment 2. This embodiment also provides a bistable electrofluid display device, the structure of which is basically the same as that of embodiment 1, except that: the hydrophilic Cofferdam comprises unconnected cofferdam body one 18 and cofferdam body two 19, and described cofferdam body one 18 and described cofferdam body two 19 are in a straight line, and described cofferdam body one 18 and described cofferdam body A gap is formed between the two 19, and the electrodeless region 8 corresponding to the gap is in the shape of an arcuate belt, and the electrodeless region 8 of the arcuate belt is arched toward the first electrode region 9, and the arcuate belt The length of the electrode-free zone 8 is ≤30 μm, and the width of the arc-shaped strip-shaped electrode-free zone 8 is 5 μm. The width of the cofferdam body is 50 μm, and the height of the coffer...

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Abstract

The invention discloses a bistable electrofluid display lower substrate and a display device including the bistable electrofluid display lower substrate. The lower substrate is provided with a first electrode area, a second electrode area, an electrodeless area and a hydrophilic cofferdam. In the display device, printing ink can move in a first area and a second area; and when there is no electricfield effect, because of the hydrophilic oleophobic performance of the hydrophilic cofferdam and the surface tension of the printing ink, the printing ink is difficult to stay in another area, and apixel is realized not to require a continuous applied electric field in both open and close states and a voltage only needs to be applied when the state is switched. The electrodeless area corresponding to gaps among cofferdam bodies forming the hydrophilic cofferdam is in an arc belt shape so that electrodes are not easy to be broken down, the motion speed of the printing ink is fast and the response speed of the display device can be increased. The display device possesses characteristics of a simple, stable and reliable structure, high reflectivity and low energy consumption.

Description

technical field [0001] The invention relates to the field of electrowetting technology, in particular to a bistable electrofluid display lower substrate and a display device including the same. Background technique [0002] With the development of flat panel display technology and the increasing prosperity of consumer electronics products, various display devices can be seen everywhere, from personal mobile phones and computers to large public display screens and billboards. The display technology has changed from the original cathode ray tube display to the liquid crystal display with a large market share and the market-oriented plasma display, etc., from monochrome display to color display, from large volume to flat and ultra-thin display. However, liquid crystal displays and plasma displays use backlight and polarization technology, which make them consume a lot of energy, it is difficult to improve the viewing angle, and problems such as high cost, high energy consumptio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B26/00
CPCG02B26/005
Inventor 白鹏飞胡晶晶唐彪周国富
Owner SOUTH CHINA NORMAL UNIVERSITY
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