Electrophoretic display device
a display device and display device technology, applied in non-linear optics, instruments, optics, etc., can solve the problems of white lines, requiring urgent attention, and easy blooming effect of display devices, and achieve the effect of reducing the blooming effect and widening the temperature operating rang
Pending Publication Date: 2022-02-24
E INK HLDG INC
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Benefits of technology
The invention provides an electrophoretic display device that can reduce the blopping phenomenon, can work at low temperatures, and has a wider temperature range. This is achieved by arranging alternating third and second electrodes in a way that avoids horizontal electric field between them and maintains high resolution. The invention also avoids a weak electric field area between adjacent electrodes, which leads to low-temperature operation and reduced power consumption. Overall, the invention is suitable for low-temperature environments and has improved performance and reliability.
Problems solved by technology
That is, the conductive particles between the horizontal spacings are moved horizontally instead of vertically, so that the electrophoretic display device is prone to blooming effect.
Therefore, if the electrophoretic display device is applied to a low-temperature environment, the conductive particles located near the electric field may not be moved, resulting in the issue of white lines.
Therefore, how to solve the blooming effect of the electrophoretic display device, while also being applicable to high and low temperature operating environments, is a technical issue that requires urgent attention.
Method used
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[0023]FIG. 1A is a cross-sectional view of an electrophoretic display device according to an embodiment of the invention. FIG. 1B is a top view of second electrodes and third electrodes of the electrophoretic display device of FIG. 1A. Please refer to FIG. 1A and FIG. 1B at the same time. In the present embodiment, an electrophoretic display device 100 includes a substrate 110, an electrophoretic display film 120, a plurality of second electrodes 130a and 130b, and a plurality of third electrodes 140a. The electrophoretic display film 120 is disposed on the substrate 110 and includes a display medium layer 122 and a first electrode 124. The second electrodes 130a and 130b are separately disposed on the substrate 110 and located between the display medium layer 122 and the substrate 110. An electric field E is formed between the first electrode 124 and the second electrodes 130a and 130b, and two adjacent second electrodes 130a and 130b have different polarities in a direction D1. Th...
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An electrophoretic display device includes a substrate, an electrophoretic display film, a plurality of second electrodes, and a plurality of third electrodes. The electrophoretic display film is disposed on the substrate and includes a display medium layer and a first electrode. The second electrodes and the third electrodes are disposed on the substrate and located between the display medium layer and the substrate. A first voltage received by each of the second electrodes is controlled by a corresponding thin-film transistor. The third electrodes and the second electrodes are alternately disposed in a direction. The first voltage is different from a second voltage received by the third electrodes.
Description
CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims the priority benefit of Taiwan application serial no. 109128360, filed on Aug. 20, 2020. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification.BACKGROUND OF THE INVENTIONField of the Invention[0002]The invention relates to a display device, and in particular to an electrophoretic display device.Description of Related Art[0003]In recent years, electrophoretic display devices are widely used in e-readers (e.g., e-books, e-newspapers) or other electronic elements (e.g., e-shelf labels (ESL)) due to advantages such as lightness, thinness, durability, and low power consumption in accordance with energy conservation and environmental protection.[0004]In the existing electrophoretic display device, the horizontal spacing between two adjacent display electrodes is very close, wherein the thickness of the display medium layer is, for example, a...
Claims
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Login to View More IPC IPC(8): G02F1/1676G02F1/167
CPCG02F1/1676G02F1/167G02F1/16762G02F1/16766
Inventor CHENG, HSIAO-LUNGTIEN, PEI-LINLO, I-SHINHUNG, CHI-MAO
Owner E INK HLDG INC