TWI709893B - Circular electrode layer and circular touch screen and information processing device using the same - Google Patents

Abstract

A circular electrode layer for a circular touch screen, characterized in that the circular electrode layer has: an inner circular electrode area with a touch unit area; and a plurality of layers of ring electrode areas surrounding the inner circular electrode area , Wherein each of the plurality of layers of ring electrode regions is divided into a plurality of touch sub-areas, and the area of each of the touch sub-regions and the touch unit area difference percentage is a predetermined Within the set value. In addition, the present invention also discloses a circular touch screen and an information processing device with the circular electrode layer.

Description

Circular electrode layer and circular touch screen and information processing device using the same

The present invention relates to a touch device, especially a circular electrode layer for a circular touch screen.

With the popularity and booming development of mobile devices, touch screens have become one of the indispensable components. Generally, the shape of the touch screen of a mobile device is square. Therefore, the area difference between a plurality of electrodes in the touch electrode array can be easily controlled within a very small range, thereby providing a good touch experience.

However, when the shape of the touch screen is circular, there will be significant area differences between the electrodes in the circular touch area, especially the electrodes near the circumference and the electrodes in the center area. Difference in area.

Please refer to FIG. 1, which shows a distribution diagram of the divided electrodes of the circular electrode layer 10 of a conventional circular touch screen. As shown in Figure 1, the central area (4x4 area part) is uniformly divided, and the boundary 2 rows of areas are heterogeneously divided. If the cutting area of the first row area of the boundary is 22.5 mm ² , that is, 100%, the length and width of the divided electrode in the central area are both 5 mm (cutting area is 25 mm ² ), that is, 111.1%. Examples of the normalization ratio of the cut area in each region are shown in Table 1. Table 1 Cutting area (unit: mm ² ) Normalization percentage 22.5 100% 25 111.1% 25.7532 114.5% 26.4483 117.5% 23.9848 106.6% 22.3375 99.3% 25.6355 113.9%

The above-mentioned difference in the cutting area will cause deviations in the touch sensing value, resulting in errors between the obtained touch coordinates and the actual coordinates, thereby affecting the user's touch experience.

In order to overcome the above-mentioned problems, the general approach is to make the area of the divided electrodes in the central area of the circular electrode layer as uniform as possible, and the area difference of the divided electrodes near the circumference is compensated for the sensed capacitance value by an algorithm. However, the compensation effect of the algorithm still has its limits. When the surface of the divided electrodes is actively uneven, the touch coordinates and the real coordinates will still have errors.

In order to solve the above problems, a novel circular electrode layer for circular touch screens is urgently needed in the art.

One purpose of the present invention is to disclose a circular electrode layer for a circular touch screen, which can make the area of each touch sub-area consistent through a ring-shaped partition, so that it does not need to rely on software algorithms for sensing Provides a good touch experience for the operator when the measured capacitance value is compensated.

Another object of the present invention is to disclose a circular touch screen, which can make the area of each touch sub-area of the inner circular electrode layer consistent by a ring-shaped partition, so that it does not need to rely on software algorithms Provides a good touch experience for the operator when the sensing capacitance value is compensated.

Another object of the present invention is to disclose an information processing device, which can make the area of each touch sub-areas of the circular electrode layer inside a circular touch screen consistent by means of a ring-shaped partition, so as not to rely on The software algorithm provides the operator with a good touch experience when the sensing capacitance value is compensated.

To achieve the foregoing purpose, a circular electrode layer for circular touch screens is proposed, which is characterized in that the circular electrode layer has: an inner circular electrode area with a touch unit area; and surrounding the inner circle A plurality of layers of ring electrode regions in the electrode region, wherein each layer of ring electrode regions in the plurality of layers of ring electrode regions are each divided into a plurality of touch sub-areas, and the area of each touch sub-region and the touch unit The area difference percentage is within a preset value.

In one embodiment, the circular touch screen has a capacitive sensing circuit to detect touch operations occurring on the inner circular electrode area or each of the touch sub-areas.

In one embodiment, the capacitance sensing circuit and a display driving circuit are integrated in the same chip.

To achieve the foregoing objective, the present invention further provides a circular touch screen, which has a circular Shaped electrode layer and a touch drive circuit for driving the circular electrode layer, and is characterized in that the circular electrode layer has: an inner circular electrode area with a touch unit area; and surrounding the inner circular electrode area The plurality of layers of ring electrode regions, wherein each layer of the ring electrode regions of the plurality of layers of ring electrode regions are each divided into a plurality of touch sub-areas, and the area of each touch sub-region and the area of the touch unit The difference percentage is within a preset value.

In one embodiment, the touch driving circuit has a capacitive sensing circuit to detect touch operations occurring on the inner circular electrode area or each of the touch sub-areas.

In a possible embodiment, the circular touch screen has a display layer, and the display layer can be a liquid crystal display layer, an organic light emitting diode display layer, a micro light emitting diode display layer or a quantum dot light emitting diode. Polar body display layer.

In one embodiment, the touch driving circuit and a display driving circuit are integrated in the same chip.

To achieve the foregoing objective, the present invention further provides an information processing device, which has a central processing unit and the circular touch screen as described, wherein the central processing unit is used for a control unit of the circular touch screen Communication.

In possible embodiments, the information processing device may be a smart watch, a smart wearable device or a vehicle dashboard device.

In order to enable your reviewer to further understand the structure, features and purpose of the present invention, drawings and detailed descriptions of preferred specific embodiments are attached as follows.

Please refer to FIG. 2, which shows one of the circular electrode layers used in the circular touch screen of the present invention Schematic diagram of an embodiment.

As shown in FIG. 2, a circular electrode layer 100 has an inner circular electrode area 110 and a plurality of layers of ring electrode areas surrounding the inner circular electrode area 110 (in FIG. 2, the first ring electrode area 120 and the second ring electrode area 130 as an example, but not limited to this).

The inner circular electrode area 110 has a touch unit area.

The plurality of layers of ring electrode areas, taking the first ring electrode area 120 and the second ring electrode area 130 as an example, are each divided into a plurality of touch sub-areas (120a, 130a), and each of the touch sub-areas The percentage difference between the area of (120a, 130a) and the area of the touch unit is within a preset value. Assuming that the inner circular electrode area 110 has a radius a, the outer circumference of the first ring electrode area 120 has a radius b, and the second ring electrode area 130 has a radius c, the touch unit area is equal to πa ² =S ₁ , and the first The area of the ring electrode region 120 is equal to πb ² - πa ² =S ₂ , and the area of the second ring electrode region 130 is equal to πc ² - πb ² =S ₃ . The first ring electrode area 120 is equally divided into M touch sub-areas 120a, so that S ₂ /M=S ₁ , and the second ring electrode area 130 is equally divided into N touch sub-areas 130a, so that S ₃ /N=S ₁ . In one embodiment, if a=5mm, M=8, and N=10, it can be calculated that b=15mm, c=21.8mm, and the preset value is 0.5%.

In addition, the circular touch screen may further have a capacitance sensing circuit to detect touch operations occurring on the inner circular electrode region 110 or each of the touch sub-regions, and the capacitance sensing circuit may It is integrated with a display driving circuit in the same chip.

Based on the above description, the present invention further discloses a circular touch screen. Please refer to FIG. 3, which illustrates a schematic diagram of an embodiment of the circular touch screen of the present invention. As shown in FIG. 3, a circular touch screen 200 has a circular electrode layer 210, a display layer 220, a touch drive circuit 210a, a display drive circuit 220a, and a control unit 230.

The circular electrode layer 210 is realized by the circular electrode layer 100 in FIG. 2. That is, the circular electrode layer 210 has an inner circular electrode area 110 and a plurality of layers of ring electrode areas surrounding the inner circular electrode area 110, the inner circular electrode area 110 has a touch unit area, and the plurality of layers of ring electrode areas Each layer of ring-shaped electrode regions in is divided into a plurality of touch sub-regions, and the difference between the area of each touch sub-region and the area of the touch unit is within a preset value.

The touch driving circuit 210a has a capacitance sensing circuit to detect touch operations occurring on the inner circular electrode area 110 or each of the touch sub-areas.

The display driving circuit 220a is used to drive the display layer 220 to present a picture.

In addition, the touch driving circuit 210a and the display driving circuit 220a can be integrated in the same chip.

In addition, the display layer 220 may be a liquid crystal display layer, an organic light emitting diode display layer, a micro light emitting diode display layer, or a quantum dot light emitting diode display layer.

Based on the above description, the present invention further provides an information processing device. Please refer to FIG. 4, which shows a block diagram of an embodiment of the information processing device of the present invention. As shown in FIG. 4, an information processing device 300 has a central processing unit 310 and a circular touch screen 320. The circular touch screen 320 is implemented by the circular touch screen 200 of FIG. 3, and the center The processing unit 310 is used to communicate with the control unit 230.

In addition, the information processing device 300 may be a smart watch, a smart wearable device, or a vehicle dashboard device.

With the design disclosed above, the present invention has the following advantages:

1. The circular electrode layer of the present invention can make the area of each touch sub-area consistent through a ring-shaped partition, so as to provide the operator with a good touch without relying on software algorithms for sensing capacitance compensation. Control experience.

2. The circular touch screen of the present invention can make the area of each touch sub-area of the inner circular electrode layer consistent through a ring-shaped partition, so that it does not need to rely on software algorithms for sensing capacitance compensation Provide a good touch experience for the operator in the case of

3. The information processing device of the present invention can make the area of each touch sub-areas of the circular electrode layer inside a circular touch screen consistent by means of a ring-shaped partition, so that it does not need to rely on software algorithms for sensing Provides a good touch experience for the operator in the case of capacitance compensation.

The disclosure in this case is a preferred embodiment, and all partial changes or modifications are derived from this The technical ideas of the case that can be easily inferred by those who are familiar with the art will not deviate from the scope of the patent right of the case.

In summary, regardless of the purpose, means and effect of this case, it is quite different from the conventional knowledge.

The technique, and its first creation is suitable for practicality, indeed meets the patent requirements of the invention. I implore your reviewer to observe and grant the patent as soon as possible to benefit the society.

10: Round electrode layer 100: round electrode layer 110: inner circle electrode area 120: first ring electrode area 120a: Touch sub area 130: second ring electrode area 130a: Touch sub area 200: Round touch screen 210: round electrode layer 210a: Touch drive circuit 220: display layer 220a: display drive circuit 230: control unit 300: Information Processing Device 310: Central Processing Unit 320: Round touch screen

FIG. 1 shows a distribution diagram of divided electrodes of a circular electrode layer of a conventional circular touch screen.

FIG. 2 is a schematic diagram of an embodiment of a circular electrode layer used in a circular touch screen of the present invention.

FIG. 3 is a schematic diagram of an embodiment of the circular touch screen of the present invention.

FIG. 4 shows a block diagram of an embodiment of the information processing device of the present invention.

100: round electrode layer

110: inner circle electrode area

120: first ring electrode area

120a: Touch sub area

130: second ring electrode area

130a: Touch sub area

Claims (9)

A circular electrode layer for a circular touch screen, characterized in that the circular electrode layer has: an inner circular electrode area with a touch unit area; and a plurality of layers of ring electrode areas surrounding the inner circular electrode area , Wherein each of the plurality of layers of ring electrode regions is divided into a plurality of touch sub-areas according to a division number, so that the difference between the area of each of the touch sub-regions and the area of the touch unit The percentage is within a preset value, and the preset value is less than or equal to 0.5%. The circular electrode layer for a circular touch screen as described in the first item of the scope of patent application, wherein the circular touch screen has a capacitive sensing circuit to detect occurrences in the inner circular electrode area or each Touch operation on the touch subarea. The circular electrode layer used in the circular touch screen as described in the second item of the scope of patent application, wherein the capacitive sensing circuit and a display driving circuit are integrated in the same chip. A circular touch screen, which has a circular electrode layer and a touch drive circuit for driving the circular electrode layer, characterized in that the circular electrode layer has: an inner circular electrode area with a touch Cell area; and a plurality of layers of ring electrode regions surrounding the inner circular electrode region, wherein each layer of ring electrode regions in the plurality of layers of ring electrode regions are divided into a plurality of touch sub-regions according to a number of divisions, so that each The difference percentage between the area of the touch sub-area and the area of the touch unit is within a preset value, and the preset value is less than or equal to 0.5%. The circular touch screen described in claim 4, wherein the touch drive circuit has a capacitive sensing circuit to detect touches occurring on the inner circular electrode area or each of the touch sub-areas operating. The circular touch screen described in item 4 of the scope of patent application has a display layer, and the display layer is composed of a liquid crystal display layer, an organic light emitting diode display layer, a micro light emitting diode display layer and quantum dots A display layer selected by the group consisting of light-emitting diode display layers. The circular touch screen described in item 6 of the scope of patent application, wherein the touch drive circuit The system and a display drive circuit are integrated in the same chip. An information processing device having a central processing unit and the circular touch screen as described in any one of the 4th to 7th patent applications, wherein the central processing unit is used to interact with the circular touch screen A control unit communication. The information processing device described in item 8 of the scope of patent application is an electronic device selected by the group consisting of smart watches, smart wearable devices, and vehicle dashboard devices.

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