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Bistable display and its driving method

A bistable display and display technology, applied in static indicators, instruments, nonlinear optics, etc., can solve problems such as incompatibility of driving circuits, damage to printed patterns, peeling, etc., to improve visual display effects, improve reliability, Eliminate shedding effects

Active Publication Date: 2021-07-23
SCHNEIDER ELECTRIC IND SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that because the bistable display also has certain optical reflections in the dark state (the second stable state of the display), the actual effect of the printed pattern cannot be completely consistent with the background color of the dark state of the display, resulting in the display being in the dark state. Sometimes the printed pattern can be faintly displayed, and the printed pattern has reliability risks such as damage and peeling
The second method is to lead a separate pattern electrode in the display, together with the background electrode and the common electrode of the display, to form a three-electrode input driving method, as shown in Figure 1(b). The disadvantage is that although it can improve the pattern display effect, but due to an additional set of drive circuits, it is not only incompatible with the previous drive circuit, but also increases the cost of the drive circuit

Method used

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  • Bistable display and its driving method
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  • Bistable display and its driving method

Examples

Experimental program
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Effect test

no. 1 example

[0038] The first embodiment is an embodiment of implementing a voltage dividing circuit for driving a bistable display by using an external capacitance method. Refer to the following Figure 2 to Figure 4 Be explained.

[0039] figure 2 A block diagram of a bistable display. For easy understanding, image 3 A physical schematic of a bistable display is shown.

[0040] The bistable display 100 is composed of a bistable display inner box 1 and two lead terminals. The two lead terminals are the signal electrode terminal 2 and the common electrode terminal 3 respectively. The inner box 1 of the bistable display is composed of two substrate glasses, i.e. the first substrate glass 11 and the second substrate glass 12, the box body 13 surrounding the space between the first substrate glass and the second substrate glass, and injecting For example, bistable display materials composed of bistable liquid crystals and the like. The common electrode conductive layer 14 is plated on...

no. 2 example

[0045] The second embodiment is an embodiment of realizing a voltage dividing circuit for driving a bistable display by using an internal capacitance method. Refer to the following Figure 5 Be explained.

[0046] In the first embodiment, it is described that the voltage dividing circuit between the electrodes of the display is realized by an external capacitor. We can also realize the voltage dividing circuit through the internal capacitance of the display, that is, make the voltage dividing capacitor in the display, and form the internal plate capacitor through the conductive layer on the two substrate glass of the display core, so that the external voltage dividing capacitor between the electrodes can be omitted.

[0047] Figure 5 It is a schematic diagram of a design case where the voltage dividing capacitor is built into the display. exist Figure 5 Among them, the patterned conductive layer 15 is made on the first substrate glass 11, so that a part of the area of ​​...

no. 3 approach

[0049] The third embodiment is an embodiment of realizing a voltage dividing circuit for driving a bistable display by using a voltage dividing resistor method. Refer to the following Figure 6 Be explained.

[0050] In addition to connecting the pattern electrode and the background electrode with an external capacitor to realize the voltage division drive circuit, other electronic components can also be connected between the pattern electrode, the background electrode, and the common electrode to perform a voltage division function to achieve the same purpose of this patent.

[0051] Figure 6 It is a schematic diagram of two-electrode driving using voltage dividing resistors to realize bistable pattern display. Such as Figure 6 As shown, the common electrode conductive layer 14 is formed on the first substrate glass 11 , and the patterned conductive layer 15 and the background conductive layer 16 are formed on the second substrate glass 12 .

[0052] exist Figure 6 In...

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Abstract

A bistable display, comprising: an inner box, composed of a first substrate, a second substrate, and a box surrounding the space between the first substrate and the second substrate, and injecting a bistable display into the space Material, one or more of the common electrode conductive layer, the pattern conductive layer and the background conductive layer are respectively formed on the first substrate and / or the second substrate inside the inner box, and the common electrode conductive layer The patterned conductive layer is drawn out of the inner box through the common electrode, the patterned conductive layer is drawn out of the inner box through the patterned electrode, and the background conductive layer is drawn out of the inner box through the background electrode.

Description

technical field [0001] The invention relates to a bistable display and a driving method thereof, in particular to a bistable display driven by two electrodes and a driving method thereof. Background technique [0002] There is a display application in the electrical switch protection circuit. When the circuit system fails, the display can indicate the type of fault, and this indication state can be maintained when the power is off, that is, the display can also keep displaying in the absence of power supply. pattern, we call this kind of display a bistable display. Taking the entire display plane of the bistable display as a pixel, and drawing out two electrodes, it can be used as a bistable indicator light. Because it does not require electricity to maintain the indication, it has high practicality in electrical switch indication. value. As a functional extension of this display, we can print patterns on the display to make a bistable indicator light with specific meaning...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/01G09G3/34
CPCG02F1/01G09G3/3433G09G3/045G09G3/16G09G2300/0426G09G3/18
Inventor 费维和张凤莲V.莫利顿P.劳林
Owner SCHNEIDER ELECTRIC IND SAS
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