CN110415613A - Stretch sensor and display panel - Google Patents

Abstract

The present invention relates to the field of display technology, and proposes a stretch sensor, which includes a first electrode and a second electrode, and the first electrode layer includes a first connection part and a plurality of electrodes connected to one side of the first connection part. The first sub-electrode, the first gap is formed between the first connecting part and the adjacent first sub-electrode; the second electrode layer is set on the same layer as the first electrode layer, including the second connecting part and the second connecting part connected A plurality of second sub-electrodes on one side, a second gap is formed between the second connection part and the adjacent second sub-electrode; wherein, the first sub-electrode is located in the second gap, and the second sub-electrode is located in the first gap, When the first electrode layer is moved away from the second electrode layer, the effective distance between the first sub-electrode and the second sub-electrode increases gradually, and the staggered length between the first sub-electrode and the second sub-electrode decreases gradually. The stretch sensor provided by the present disclosure has a small volume and can improve inspection sensitivity and detection accuracy.

Description

Stretch sensor and display panel

technical field

The invention relates to the field of display technology, in particular to a stretch sensor and a display panel.

Background technique

With the development of display panel technology, a stretchable display panel emerges as the times require, and the stretchable display panel can be stretched along its face to change the area of the display area. The stretchable display panel is usually provided with a stretch sensor, which is used to detect the stretch state of the stretchable display panel.

In the related art, the tension sensor usually adopts an external tension sensor, which will greatly increase the volume of the display panel, and at the same time, the detection accuracy of the external tension sensor is low.

It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present invention, and therefore may include information that does not constitute prior art known to those of ordinary skill in the art.

Contents of the invention

The object of the present invention is to provide a stretch sensor and a display panel, which can solve the technical problems of large volume and low detection accuracy of the external stretch sensor in the related art.

Other features and advantages of the invention will become apparent from the following detailed description, or in part, be learned by practice of the invention.

According to one aspect of the present invention, a stretch sensor is provided, and the stretch sensor includes: a first electrode layer and a second electrode layer. The first electrode layer includes a first connection part and a plurality of first sub-electrodes connected to one side of the first connection part, and a first gap is formed between the first connection part and the adjacent first sub-electrodes; The second electrode layer is set on the same layer as the first electrode layer, and includes a second connection part and a plurality of second sub-electrodes connected to one side of the second connection part. A second gap is formed between the second sub-electrodes; wherein, the first sub-electrode is located in the second gap, and the second sub-electrode is located in the first gap, so that the first electrode layer is away from the When the second electrode layer moves, the effective distance between the first sub-electrode and the second sub-electrode gradually increases, and the staggered length between the first sub-electrode and the second sub-electrode gradually increases. decrease.

In an exemplary embodiment of the present invention, the stretch sensor further includes a sensing unit connected to the first connection part and the second connection part for The capacitance change between the second sub-electrodes determines the tension state.

In an exemplary embodiment of the present invention, the first sub-electrode and the second sub-electrode are acute-angled triangles, the base of the first sub-electrode is connected to the first connection part, and the second sub-electrode The bottom side of the sub-electrode is connected to the second connection part.

In an exemplary embodiment of the present invention, the first sub-electrode and the second sub-electrode are right-angled triangles, the right-angle side of the first sub-electrode is connected to the first connection part, and the second The right-angle side of the sub-electrode is connected to the second connection portion, and the hypotenuse of the first sub-electrode is opposite to the hypotenuse of the second sub-electrode.

In an exemplary embodiment of the present invention, the first sub-electrode and the second sub-electrode are trapezoidal, the long base of the first sub-electrode is connected to the first connection part, and the second sub-electrode The long bases of the sub-electrodes are connected to the second connection portion.

In an exemplary embodiment of the present invention, the plurality of first sub-electrodes are arranged at intervals, and the plurality of second sub-electrodes are arranged at intervals.

In an exemplary embodiment of the present invention, the plurality of first sub-electrodes are arranged adjacently, and the plurality of second sub-electrodes are arranged adjacently.

According to one aspect of the present invention, a display panel is provided, the display panel includes the above-mentioned stretch sensor, and the stretch sensor is arranged in a non-display area of the display panel.

In an exemplary embodiment of the present invention, the display panel includes a conductive layer, and the tensile sensor is disposed on the same layer as the conductive layer.

In an exemplary embodiment of the present invention, the conductive layer includes a source-drain layer and a gate layer.

The present disclosure provides a stretch sensor, which includes: a first electrode layer and a second electrode layer. The first electrode layer includes a first connection part and a plurality of first sub-electrodes connected to one side of the first connection part, and a first gap is formed between the first connection part and the adjacent first sub-electrodes; The second electrode layer is set on the same layer as the first electrode layer, and includes a second connection part and a plurality of second sub-electrodes connected to one side of the second connection part. A second gap is formed between the second sub-electrodes; wherein, the first sub-electrode is located in the second gap, and the second sub-electrode is located in the first gap, so that the first electrode layer is away from the When the second electrode layer moves, the effective distance between the first sub-electrode and the second sub-electrode gradually increases, and the staggered length between the first sub-electrode and the second sub-electrode gradually increases. decrease. When the stretch sensor is stretched, the first electrode layer moves away from the second electrode layer, the effective distance between the first sub-electrode and the second sub-electrode gradually increases, and at the same time, the first sub-electrode and the second sub-electrode The interleaving length between the second sub-electrodes decreases gradually, so that the capacitance between the first sub-electrodes and the second sub-electrodes decreases. Therefore, the tension state of the tension sensor can be obtained by detecting the capacitance change between the first sub-electrode and the second sub-electrode. On the one hand, since the first electrode layer and the second electrode layer are arranged in the same layer in the stretch sensor, the volume of the stretch sensor is small. On the other hand, when the stretch sensor is stretched, the effective distance between the first sub-electrode and the second sub-electrode and the staggered length change simultaneously, so that the inspection sensitivity and detection sensitivity of the stretch sensor can be increased. precision.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description serve to explain the principles of the invention. Apparently, the drawings in the following description are only some embodiments of the present invention, and those skilled in the art can obtain other drawings according to these drawings without creative efforts.

Fig. 1 is a schematic diagram of the structure before stretching in an exemplary embodiment of the stretch sensor of the present disclosure;

Fig. 2 is a schematic diagram of the structure after stretching in an exemplary embodiment of the stretch sensor of the present disclosure;

Fig. 3 is a schematic structural diagram of another exemplary embodiment of the stretch sensor of the present disclosure;

Fig. 4 is a schematic structural diagram of another exemplary embodiment of the stretch sensor of the present disclosure;

Fig. 5 is a schematic structural diagram of another exemplary embodiment of the tension sensor of the present disclosure.

Detailed ways

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.

Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of an icon to another component, these terms are used in this specification only for convenience, for example, according to the description in the accompanying drawings directions for the example described above. It will be appreciated that if the illustrated device is turned over so that it is upside down, then elements described as being "upper" will become elements that are "lower". Other relative terms, such as "high", "low", "top", "bottom", "left", "right", etc. also have similar meanings. When a structure is "on" another structure, it may mean that a structure is integrally formed on another structure, or that a structure is "directly" placed on another structure, or that a structure is "indirectly" placed on another structure through another structure. other structures.

The terms "a", "an" and "the" are used to indicate the presence of one or more elements/components/etc; Additional elements/components/etc. may be present in addition to the listed elements/components/etc.

As shown in Figures 1 and 2, Figure 1 is a schematic diagram of the structure before stretching in an exemplary embodiment of the stretch sensor of the present disclosure, and Figure 2 is a structure after stretching in an exemplary embodiment of the stretch sensor of the present disclosure schematic diagram. The stretch sensor includes: a first electrode layer 1 and a second electrode layer 2 . The first electrode layer 1 includes a first connection portion 11 and a plurality of first sub-electrodes 12 connected to one side of the first connection portion 11, the first connection portion 11 and the adjacent first sub-electrodes 12 A first gap 13 is formed between them; the second electrode layer 2 is set on the same layer as the first electrode layer 1, and includes a second connection part 21 and a plurality of second sub-electrodes 22 connected to one side of the second connection part 21 , a second gap 23 is formed between the second connection portion 21 and the adjacent second sub-electrode 22; wherein, the first sub-electrode 12 is located in the second gap 23, and the second sub-electrode 22 is located in the first gap 13, so that when the first electrode layer 1 moves away from the second electrode layer 2, the effective distance between the first sub-electrode 12 and the second sub-electrode 22 d increases gradually, and the staggered length s between the first sub-electrode and the second sub-electrode decreases gradually.

Wherein, the setting of the second electrode layer 2 on the same layer as the first electrode layer 1 can be understood as that the second electrode layer 2 and the first electrode layer 1 are located on the same layer in physical structure. The effective distance d between the first sub-electrode 12 and the second sub-electrode 22 may refer to the vertical distance between the edges of the first sub-electrode 12 and the second sub-electrode 22 .

The present disclosure provides a stretch sensor, which includes: a first electrode layer and a second electrode layer. The first electrode layer includes a first connection part and a plurality of first sub-electrodes connected to one side of the first connection part, and a first gap is formed between the first connection part and the adjacent first sub-electrodes; The second electrode layer is set on the same layer as the first electrode layer, and includes a second connection part and a plurality of second sub-electrodes connected to one side of the second connection part. A second gap is formed between the second sub-electrodes; wherein, the first sub-electrode is located in the second gap, and the second sub-electrode is located in the first gap, so that the first electrode layer is away from the When the second electrode layer moves, the effective distance between the first sub-electrode and the second sub-electrode gradually increases, and the staggered length between the first sub-electrode and the second sub-electrode gradually increases. decrease. According to Figure 1 and Figure 2, it can be clearly seen that when the stretch sensor is stretched, the first electrode layer moves away from the second electrode layer, and the effective distance d between the first sub-electrode and the second sub-electrode gradually increases, and at the same time, the staggered length s between the first sub-electrode and the second sub-electrode decreases gradually, so that the capacitance between the first sub-electrode and the second sub-electrode decreases gradually. Therefore, the tension state of the tension sensor can be obtained by detecting the overall capacitance change between the plurality of first sub-electrodes and the plurality of second sub-electrodes. On the one hand, since the first electrode layer and the second electrode layer are arranged in the same layer in the stretch sensor, the volume of the stretch sensor is small. On the other hand, when the stretch sensor is stretched, the effective distance between the first sub-electrode and the second sub-electrode and the staggered length change simultaneously, so that the inspection sensitivity and detection sensitivity of the stretch sensor can be increased. precision.

In this exemplary embodiment, as shown in FIGS. 1 and 2 , the first sub-electrode 12 and the second sub-electrode 22 may be acute-angled triangles, and the base of the first sub-electrode 12 is in contact with the first sub-electrode 12 . The connecting portion 11 is connected, and the bottom edge of the second sub-electrode 22 is connected to the second connecting portion. When forming the first electrode layer, the first sub-electrode and the first connection part can be integrally formed; when forming the second electrode layer, the second sub-electrode and the second connection part can be integrally formed; the first electrode layer and the second electrode Layers can be shaped in a single patterning process.

It should be understood that, in other exemplary embodiments, the first sub-electrode 12 and the second sub-electrode 22 may also have other shapes. For example, as shown in FIG. 3 , which is a schematic structural diagram of another exemplary embodiment of the stretch sensor of the present disclosure, the first sub-electrode 12 and the second sub-electrode 22 may also be in the shape of a right triangle. The right-angle side of the first sub-electrode 12 is connected to the first connection portion 11, the right-angle side of the second sub-electrode 22 is connected to the second connection portion 21, and the oblique side of the first sub-electrode 12 The side is opposite to the hypotenuse of the second sub-electrode 22 .

For another example, as shown in FIG. 4 , which is a structural schematic diagram of another exemplary embodiment of the stretch sensor of the present disclosure, the first sub-electrode 12 and the second sub-electrode 22 may be trapezoidal, and the first sub-electrode The long bottom of the electrode 12 is connected to the first connection portion 11 , and the long bottom of the second sub-electrode 22 is connected to the second connection portion 21 . In FIG. 4, the capacitance between the first electrode layer and the second electrode layer includes not only the capacitance between the first sub-electrode 12 and the second sub-electrode 22, but also the short bottom edge of the first sub-electrode 12 and the second connection. The capacitance between the parts 21, the capacitance between the short bottom of the second sub-electrode 22 and the first connecting part 11. When the first electrode layer moves away from the second electrode layer, it will not only reduce the capacitance between the first sub-electrode and the second sub-electrode, but also increase h in Fig. 4, thus making the first sub-electrode 12 short The capacitance between the bottom side and the second connection part 21 and the capacitance between the short bottom side of the second sub-electrode 22 and the first connection part 11 decrease. Therefore, this setup can further increase the sensitivity and accuracy of the stretch sensor.

In this exemplary embodiment, as shown in FIGS. 1 , 2 , 3 and 4 , the plurality of first sub-electrodes 12 may be arranged at intervals, and the plurality of second sub-electrodes 22 may be arranged at intervals.

It should be understood that, in other exemplary embodiments, as shown in FIG. 5 , it is a schematic structural diagram of another exemplary embodiment of the tension sensor of the present disclosure. The plurality of first sub-electrodes 12 may also be arranged adjacently, and the plurality of second sub-electrodes 22 may also be arranged adjacently.

In this exemplary embodiment, the stretch sensor may further include a sensing unit connected to the first connection part and the second connection part for The capacitance change between the two sub-electrodes determines the stretching state. When the first electrode layer and the second electrode layer are stretched, when the first electrode layer 1 moves away from the second electrode layer 2, the distance between the first sub-electrode 12 and the second sub-electrode 22 The effective distance d gradually increases, and the staggered length s between the first sub-electrodes and the second sub-electrodes gradually decreases, so that the capacitance between the plurality of first sub-electrodes and the plurality of second sub-electrodes gradually decrease. Each capacitance value between the first sub-electrode and the second sub-electrode corresponds to a tension state. Therefore, the sensing unit can determine the tension state by detecting the overall capacitance value between the plurality of first sub-electrodes and the plurality of second sub-electrodes.

This exemplary embodiment also provides a display panel, which includes the above-mentioned stretch sensor, and the stretch sensor may be disposed in a non-display area of the display panel.

The display panel provided by this exemplary embodiment has the same technical features and working principle as the above-mentioned stretch sensor, which has been described in detail above and will not be repeated here.

In this exemplary embodiment, the display panel may include a conductive layer, and the tension sensor may be disposed on the same layer as the conductive layer. Here, the arrangement of the stretch sensor and the conductive layer in the same layer can be understood as that the stretch sensor and the conductive layer are formed through one patterning process. Setting the tensile sensor and the conductive layer on the same layer can simplify the manufacturing process of the display panel. Wherein, the conductive layer may include a source-drain layer, a gate layer, and the like.

Other embodiments of the disclosure will be readily apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any modification, use or adaptation of the present disclosure, and these modifications, uses or adaptations follow the general principles of the present disclosure and include common knowledge or conventional technical means in the technical field not disclosed in the present disclosure . The specification and examples are to be considered exemplary only, with the true scope and spirit of the disclosure indicated by the appended claims.

It should be understood that the present disclosure is not limited to the precise constructions which have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A stretch sensor, characterized in that, comprising: The first electrode layer includes a first connection part and a plurality of first sub-electrodes connected to one side of the first connection part, and a first gap is formed between the first connection part and the adjacent first sub-electrodes ; The second electrode layer is set on the same layer as the first electrode layer, and includes a second connection part and a plurality of second sub-electrodes connected to one side of the second connection part, and the second connection part is connected to the adjacent forming a second gap between the second sub-electrodes; Wherein, the first sub-electrode is located in the second gap, and the second sub-electrode is positioned in the first gap, so that when the first electrode layer moves away from the second electrode layer, the The effective distance between the first sub-electrode and the second sub-electrode increases gradually, and the staggered length between the first sub-electrode and the second sub-electrode decreases gradually. 2. stretch sensor according to claim 1, is characterized in that, described stretch sensor also comprises: The sensing unit is connected to the first connection part and the second connection part, and is used for judging the tension state according to the capacitance change between the first sub-electrode and the second sub-electrode. 3. The stretch sensor according to claim 1, wherein the first sub-electrode and the second sub-electrode are acute-angled triangles, and the base of the first sub-electrode is connected to the first connecting portion connected, the bottom edge of the second sub-electrode is connected to the second connecting portion. 4. The stretch sensor according to claim 1, wherein the first sub-electrode and the second sub-electrode are right-angled triangles, and the right-angled side of the first sub-electrode is connected to the first connecting portion connected, the right-angle side of the second sub-electrode is connected to the second connection part, and the hypotenuse of the first sub-electrode is opposite to the hypotenuse of the second sub-electrode. 5. The stretch sensor according to claim 1, wherein the first sub-electrode and the second sub-electrode are trapezoidal, and the long base of the first sub-electrode is connected to the first connecting portion connected, the long bottom side of the second sub-electrode is connected to the second connection part. 6 . The stretch sensor according to claim 1 , wherein the plurality of first sub-electrodes are arranged at intervals, and the plurality of second sub-electrodes are arranged at intervals. 7. The stretch sensor according to claim 1, wherein the plurality of first sub-electrodes are adjacently arranged, and the plurality of second sub-electrodes are adjacently arranged. 8. A display panel, characterized by comprising the stretch sensor according to any one of claims 1-7, the stretch sensor being arranged in a non-display area of the display panel. 9 . The display panel according to claim 8 , wherein the display panel comprises a conductive layer, and the tensile sensor is disposed on the same layer as the conductive layer. 10. The display panel according to claim 9, wherein the conductive layer comprises a source-drain layer and a gate layer.