CN106405948B - Display panel - Google Patents

Abstract

An embodiment of the present invention provides a display panel, comprising: a first substrate, having a first pixel unit, a second pixel unit and a third pixel unit, the first pixel unit, the second pixel unit and the third pixel unit are arranged side by side, and the first pixel unit is adjacent to the second pixel unit and is a pixel unit of different colors, while the second pixel unit is adjacent to the third pixel unit and is a pixel unit of the same color; and a plurality of electrodes, arranged on the first substrate and comprising: a first electrode, a second electrode and a third electrode, wherein the first electrode is arranged in the first pixel unit, the second electrode is arranged in the second pixel unit, and the third electrode is arranged in the third pixel unit; wherein the width of a first spacing between the first electrode and the second electrode is greater than the width of a second spacing between the second electrode and the third electrode.

Description

display panel

technical field

The present invention provides a display panel, especially a display panel with adjacent pixel electrodes of the same color.

Background technique

With the continuous advancement of display technology, all devices are developing towards small size, thin thickness, and light weight. Therefore, the current mainstream display devices on the market have developed from cathode ray tubes to liquid crystal display devices. In particular, liquid crystal display devices can be applied in many fields. Most of the display devices such as mobile phones, notebook computers, video cameras, cameras, music players, mobile navigation devices, and TVs used in daily life use liquid crystal display panels.

In particular, the requirements for the fineness of the display panel picture in the current market are constantly increasing, so various manufacturers are actively developing higher-end display panels. With the rise of 4K2K panels and the pursuit of higher PPI (pixels per inch) resolution for handheld display devices (such as mobile phones, tablet computers, etc.), the need to accommodate more pixels per unit area is an issue in the panel industry. Future Trends.

However, in a high-resolution display panel, the area occupied by the unit pixel is reduced, which may easily cause the problem of insufficient aperture ratio, resulting in a decrease in the light transmittance of the entire display panel. In view of this, it is one of the development directions of researchers in the field to develop a display panel that can improve the aperture ratio of the pixel unit to increase its light transmittance.

SUMMARY OF THE INVENTION

The present invention provides a display panel, which can improve the light transmittance of pixel units by adjusting the electrode spacing between adjacent pixel units.

A display panel according to an embodiment of the present invention includes: a first substrate having a first pixel unit, a second pixel unit and a third pixel unit, wherein the first pixel unit, the second pixel unit and the first pixel unit Three pixel units are arranged side by side, and the first pixel unit is adjacent to the second pixel unit and is a pixel unit of a different color, and the second pixel unit is adjacent to the third pixel unit and is a pixel unit of the same color; and A plurality of electrodes are arranged on the first substrate and include: a first electrode, a second electrode and a third electrode, wherein the first electrode is arranged in the first pixel unit, and the second electrode is arranged in the In the second pixel unit, the third electrode is disposed in the third pixel unit; wherein, the first electrode and the second electrode are separated by a first distance, and the second electrode is separated from the third electrode There is a second interval, and the width of the first interval is greater than the width of the second interval.

In addition, the display panel may further include a second substrate disposed opposite to the first substrate, wherein a black matrix layer is disposed on the second substrate, and the black matrix layer is a patterned black matrix layer, wherein the two electrodes The black matrix layer is not disposed above the second distance with the third electrode. More specifically, the black matrix layer has a first opening and a second opening, the first opening exposes the first electrode, and the second opening exposes the second electrode and the third electrode simultaneously.

In addition, in the display panel, a plurality of data lines are arranged on the first substrate, and the data lines are arranged side by side and are respectively arranged between the first electrode and the second electrode, and between the second electrode and the first electrode. between the three electrodes. Wherein, the black matrix layer is not provided above the data line between the second electrode and the third electrode.

Furthermore, in the display panel, the first electrode, the second electrode and the third electrode respectively comprise a plurality of strip electrodes, and the length direction of the strip electrodes is the same as the substantially extending direction of the data lines. . The sum of the width of the strip electrodes included in the first electrode and the width of the gap between two adjacent strip electrodes is not equal to the width of the strip electrodes included in the second electrode or the third electrode and the width of the two adjacent strip electrodes. The sum of the widths of the gaps between adjacent strip electrodes; preferably, the sum of the width of the strip electrodes included in the first electrode and the width of the gap between two adjacent strip electrodes is smaller than the second electrode Or the sum of the width of the strip electrodes included in the third electrode and the width of the gap between two adjacent strip electrodes. In more detail, the width of the strip electrodes included in the first electrode may be smaller than or equal to the width of the strip electrodes included in the second electrode or the third electrode; and/or two adjacent ones of the first electrodes The width of the gap between the strip electrodes is less than or equal to the width of the gap between two adjacent strip electrodes in the second electrode or the third electrode.

Therefore, in the display panel provided by the present invention, the spacing between the second electrodes and the third electrodes of adjacent pixel units of the same color is designed to be smaller than the spacing between the first electrodes and the second electrodes of adjacent pixel units of different colors Therefore, the light transmittance at the interface of two adjacent pixel units of the same color can be improved; and the effect of this light transmittance improvement is more significant in a high-resolution panel. In addition, the width of the strip electrodes included in the second electrode or the third electrode and the width of the gap between two adjacent strip electrodes are respectively designed to be greater than or equal to the width of the strip electrodes included in the first electrode and The width of the gap between two adjacent strip electrodes can further improve the light transmittance at the interface between two adjacent pixel units of the same color.

Description of drawings

In order to further illustrate the technical content of the present invention, the following detailed description is as follows in conjunction with the embodiments and the accompanying drawings, wherein:

FIG. 1 is a schematic cross-sectional view of a display device according to a preferred embodiment of the present invention.

2 is a schematic cross-sectional view of a display panel according to a preferred embodiment of the present invention.

3 is a top view of a first substrate of a display panel according to a preferred embodiment of the present invention.

FIG. 4 is a top view of a first substrate of a display panel and a black matrix layer above it according to a preferred embodiment of the present invention.

5 is a top view of a first substrate of a display panel according to a comparative example of the present invention.

6 is a top view of a first substrate of a display panel and a black matrix layer above it in a comparative example of the present invention.

FIG. 7 is a schematic cross-sectional view along the section line A-A' in FIG. 3 of a display panel according to a preferred embodiment of the present invention, combined with a light transmission simulation result diagram.

FIG. 8 is a schematic cross-sectional view of a display panel according to a comparative example of the present invention along the section line A-A' in FIG. 5, combined with a light transmission simulation result diagram.

FIG. 9 and FIG. 10 are schematic diagrams showing the arrangement of pixel electrodes of a display panel according to other preferred embodiments of the present invention, respectively.

11A to 12 are schematic diagrams of color arrangement of pixel units of a display panel according to other preferred embodiments of the present invention, respectively.

Detailed ways

The following are specific embodiments to illustrate the implementation of the present invention, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed for different viewpoints and applications without departing from the spirit of the present creation.

Furthermore, the terms of ordinal numbers used in the description and the claims to modify the claim elements do not imply and represent that the claimed element has any preceding ordinal numbers, nor does it represent that a certain claim element is related to another claim element. The order of the elements, or the order of the manufacturing method, the ordinal numbers are used only to clearly distinguish a claim element with a certain name from another claim element with the same name.

Example

FIG. 1 is a schematic cross-sectional view of a display device according to a preferred embodiment of the present invention. The display device of this embodiment includes: a backlight module 1 , a first polarizing plate 2 , a display panel 3 , and a second polarizing plate 4 are sequentially disposed above the backlight module 1 . The display panel 3 of this embodiment includes: a thin film transistor substrate 31 ; a pair of side substrates 33 ; and a display medium 32 located between the thin film transistor substrate 31 and the opposite side substrate 33 . In the present embodiment, the thin film transistor substrate 31 includes thin film transistor units (not shown) as pixel switches; the opposite substrate 33 includes a color filter layer (not shown), which is a color filter substrate. However, in other embodiments of the present invention, the color filter layer (not shown) can also be included in the thin film transistor substrate 31, in this case, the thin film transistor substrate 31 is a thin film transistor substrate integrating color filter arrays (colorfilter on array, COA). In addition, in this embodiment, the display medium 32 may be a liquid crystal layer; in other embodiments of the present invention, the display medium may be an organic light emitting diode layer.

2 is a schematic cross-sectional view of a display panel according to a preferred embodiment of the present invention. Wherein, the thin film transistor substrate 31 of this embodiment includes: a first substrate 311, on which are sequentially disposed a thin film transistor layer 312, a common electrode layer 313, a first insulating layer 314, a pixel electrode layer 315 and a first Alignment layer 316 . The thin film transistor layer 312 includes a plurality of thin film transistor units (not shown) serving as pixel switches, and the pixel electrode layer 315 includes a plurality of pixel electrodes (not shown). In addition, the opposite substrate 33 in this embodiment includes a second substrate 331 , on which a black matrix layer 332 , a color filter layer 333 and a second alignment layer 334 are sequentially disposed. Furthermore, the display medium 32 of this embodiment is disposed between the first alignment layer 316 and the second alignment layer 334 . Here, the first substrate 311 and the second substrate 331 can be made of substrate materials such as glass, plastic, and flexible materials; the common electrode layer 313 and the pixel electrode layer 315 can be made of transparent conductive electrode materials (such as: ITO, IZO or ITZO); the first insulating layer 314 can be made of insulating layer materials such as oxide, nitride or oxynitride; and the first alignment layer 316 and the second alignment layer 334 can also be made of alignment layer materials ( Such as: polyimide (PI)), and can be aligned by brushing alignment or photo-alignment process.

Here, it should be noted that in FIG. 2 , the common electrode layer 313 is disposed under the pixel electrode layer 315 ; however, in other embodiments of the present invention, the pixel electrode layer 315 may also be disposed under the common electrode layer 313 below. Next, the structure design of the electrode layer (in this embodiment, the pixel electrode layer 315 ) on the thin film transistor substrate 31 closest to the display medium 32 in FIG. 1 and FIG. The relative relationship of the black matrix layer 332 .

3 is a top view of a first substrate of a display panel according to a preferred embodiment of the present invention, wherein the first substrate 311 of the display panel of this embodiment is provided with: a plurality of first wires 3121 , which are substantially parallel and arranged in parallel with each other. as gate lines; a plurality of second wires 3122, which are arranged substantially in parallel and intersect with the first wires 3121 respectively and serve as data lines; and a plurality of pixel switches 3123, which are respectively connected by the first wires 3121, the second wires 3122 and the semiconductor layer (not shown in the figure) is formed by matching.

In addition, in the display panel of this embodiment, the first substrate 311 has a first pixel unit 311a, a second pixel unit 311b, a third pixel unit 311c and a fourth pixel unit 311d, which are respectively disposed on the first The wire 3121 and the second wire 3122 are defined, wherein the first pixel unit 311a, the second pixel unit 311b, the third pixel unit 311c and the fourth pixel unit 311d are arranged side by side, and the first pixel unit 311a and the second pixel unit 311b are The second pixel unit 311b is adjacent to the third pixel unit 311c and is a pixel unit of the same color, and the third pixel unit 311c is adjacent to the fourth pixel unit 311d and is a pixel unit of a different color. .

Furthermore, in the display panel of this embodiment, a first electrode 3151 , a second electrode 3152 , a third electrode 3153 and a fourth electrode 3154 are further provided on the first substrate 311 , which are all pixel electrodes, and are respectively It is electrically connected to the pixel switch 3123, wherein the first electrode 3151 is arranged in the first pixel unit 311a, the second electrode 3152 is arranged in the second pixel unit 311b, the third electrode 3153 is arranged in the third pixel unit 311c, and the third electrode 3153 is arranged in the third pixel unit 311c. The four electrodes 3154 are disposed in the fourth pixel unit 311d. Here, the second wires 3122 arranged on the first substrate 311 are not only arranged side by side or are arranged at the first electrodes 3151 and the second electrodes 3152, the second electrodes 3152 and the third electrodes 3153, and the third electrodes 3153 and the Between four electrodes 3154.

As shown in FIG. 3 , in the display panel of this embodiment, the first electrode 3151 and the second electrode 3152 are separated by a first distance G1, and the third electrode 3153 and the fourth electrode 3154 are also separated by a first distance G1. A second gap G2 is spaced between the second electrode 3152 and the third electrode 3153, and the width of the first gap G1 is greater than the width of the second gap G2. More specifically, in two adjacent pixel units of different colors (ie, the first pixel unit 311a and the second pixel unit 311b, and the third pixel unit 311c and the fourth pixel unit 311d), the two adjacent electrodes ( That is, the distance between the first electrode 3151 and the second electrode 3152, and the third electrode 3153 and the fourth electrode 3154) is greater than that between two adjacent pixel units of the same color (ie, the second pixel unit 311b and the third pixel unit 311c). ), the distance between two adjacent electrodes (ie, the second electrode 3152 and the third electrode 3153).

In addition, in this embodiment, the first electrode 3151 , the second electrode 3152 , the third electrode 3153 and the fourth electrode 3154 respectively include a plurality of strip electrodes, and the length direction of the strip electrodes is the same as that of the second wire 3122 The substantial extension direction is the same. Here, in the first electrode 3151 and the fourth electrode 3154, the strip electrodes have a width W1, and there is a gap width S1 between two adjacent strip electrodes; while in the second electrode 3152 and the third electrode 3153, the strip electrodes have a width W1. It has a width W2, and there is a gap width S2 between two adjacent strip electrodes.

Wherein, the width W1 of any strip electrode included in the first electrode 3151 or the fourth electrode 3154 and the sum (W1+S1) of the gap width S1 between two adjacent strip electrodes are not equal to, and preferably are It is smaller than the sum (W2+S2) of the width W1 of any strip electrode included in the second electrode 3152 or the third electrode 3153 and the width of the gap S2 between two adjacent strip electrodes. In addition, the width W1 of any strip electrode included in the first electrode 3151 or the fourth electrode 3154 is smaller than the width W2 of any strip electrode included in the second electrode 3152 or the third electrode 3153 . Furthermore, the gap width S1 between two adjacent strip electrodes in the first electrode 3151 or the fourth electrode 3154 is smaller than the gap width S2 between two adjacent strip electrodes in the second electrode 3152 or the third electrode 3153 .

However, in other embodiments of the present invention, the width W1 of any strip electrode included in the first electrode 3151 or the fourth electrode 3154 may be smaller than or equal to any strip electrode included in the second electrode 3152 or the third electrode 3153 The width W2 of the first electrode 3151 or the fourth electrode 3154 between the two adjacent strip electrodes can be less than or equal to the gap width S1 between the two adjacent strip electrodes in the second electrode 3152 or the third electrode 3153 Gap width S2; the aforementioned widths W1, W2 and the size of the gap widths S1, S2 can be adjusted according to the color and arrangement of the panel pixel units, as long as the relationship between the widths W1, W2 and the gap widths S1, S2 can conform to the aforementioned W1+ S1 is not equal to and preferably smaller than W2+S2, and the width of the first pitch G1 can be made larger than the width of the second pitch G2.

FIG. 4 is a top view of a first substrate of a display panel and a black matrix layer above it according to a preferred embodiment of the present invention. As shown in FIGS. 2 and 4 , in the display panel of this embodiment, a black matrix layer 332 is disposed on the second substrate 331 , wherein the black matrix layer 332 is a patterned black matrix layer with a first opening 3321 and a second opening 3322, wherein the two first openings 3321 respectively expose part of the first electrode 3151 and the fourth electrode 3154, and the second opening 3322 exposes part of the second electrode 3152 and the third electrode 3153 at the same time. In other words, as shown in FIGS. 2 and 3 , the black matrix layer 332 is not disposed above the second gap G2 between the second electrode 3152 and the third electrode 3153 , that is, the second wire 3122 between the second electrode 3152 and the third electrode 3153 The black matrix layer 332 is not provided above. More specifically, in two adjacent pixel units of different colors (ie, the first pixel unit 311a and the second pixel unit 311b, and the third pixel unit 311c and the fourth pixel unit 311d), the two adjacent electrodes ( That is, the black matrix layer 332 is disposed above the space between the first electrode 3151 and the second electrode 3152, and the third electrode 3153 and the fourth electrode 3154) (ie, where the second wire 3122 is arranged); In adjacent pixel units of the same color (ie, the second pixel unit 311b and the third pixel unit 311c , the distance between two adjacent electrodes (ie, the second electrode 3152 and the third electrode 3153 ) (ie, the second wire The black matrix layer 332 is not provided above the position where 3122 is arranged).

Therefore, as shown in FIGS. 3 and 4 , in the display panel of this embodiment, by replacing the color arrangement of the pixel units, specific adjacent pixel units exhibit the same color. At this time, there is no difference between adjacent pixel units of the same color. There is a problem of color mixing, so it is not necessary to provide a black matrix layer above the gap between two adjacent electrodes in adjacent pixel units of the same color, and because the area of the black matrix layer is reduced, the aperture ratio of the panel and the penetration rate can be further improved. Transparency. In addition, in the display panel of this embodiment, by adjusting the width and the gap width of the strip electrodes in adjacent pixel units of the same color, the spacing between two adjacent electrodes in adjacent pixel units of the same color is designed to be smaller than the adjacent pixels of different colors. The distance between two adjacent electrodes in the pixel unit is to avoid that when there is no black matrix above the gap between the two adjacent electrodes in adjacent pixel units of the same color, there is a dark matrix adjacent to the second wire (data wire). The occurrence of the streaks can further improve the light transmittance of adjacent pixel units of the same color.

Comparative example

5 and 6 are a top view of a first substrate and a top view of the first substrate and the black matrix layer above the first substrate, respectively, of the display panel of the present comparative example. Here, the display panel of the present comparative example is the same as that of the previous embodiment except for the following differences.

First, the first electrode 3151 and the second electrode 3152, the second electrode 3152 and the third electrode 3153, and the third electrode 3153 and the fourth electrode 3154 are separated by a first distance G1. Next, any strip electrodes included in the first electrode 3151 , the second electrode 3152 , the third electrode 3153 and the fourth electrode 31544 have the same width W1 , and there is a gap width S1 between two adjacent strip electrodes.

Test example

Here, the light transmittance simulation is performed on the display panels of the embodiment and the comparative example in FIGS. 3 and 5 ; and the cross-sectional schematic diagrams along the AA' section line in FIGS. 3 and 5 combined with the light transmittance simulation results are as follows As shown in FIGS. 7 and 8 , the curve T is the light transmittance simulation curve, respectively.

As shown in FIG. 7 and FIG. 8 , compared with using the display panel according to the comparative example (as shown in FIG. 8 ), the simulation results of the display panel according to the embodiment of the present invention (as shown in FIG. 7 ) show that, In the regions R1 and R2 adjacent to the second wire 3122, the height of the light transmittance curve T is significantly higher than that of the display panel of the comparative example. The electrode width and the gap width between adjacent strip electrodes can improve the light transmittance of adjacent pixel units of the same color.

Here, in the display panel of the embodiment and the comparative example, in two adjacent pixel units of the same color, when the first spacing G1, the second spacing G2, the widths W1, W2 and the gap widths S1, S2 have different values, simulations are provided. The results are shown in Table 1 below.

Table 1

W1(μm) S1(μm) G1(μm) Transmittance(%) Comparative example 2.05 2.65 9 100 W2(μm) S2(μm) G2(μm) Example 1 2.05 3.65 7 103.46 Example 2 2.05 3.55 7.2 103.47 Example 3 2.25 3.15 7.2 103.73

Note: Examples 1-3 refer to the panels shown in the previous examples, and are simulated with the parameters shown in Table 1.

Here, the transmittance of the display panel of the comparative example is set as 100%, and the calculation of the transmittance of Examples 1-3 is based on the comparative example. The results in Table 1 show that when the width (W2) and/or the gap width (S2) of the strip electrodes in adjacent pixel units of the same color are adjusted to shorten the distance (G2) between the two adjacent electrodes, the two adjacent same-color pixels can be improved. The overall light transmittance of the pixel unit (-4%); and in the regions R1 and R2 adjacent to the second wire 3122 as shown in FIG. 7 and FIG. 8 , the light transmittance can even be improved by about 70%.

Here, the so-called "light transmittance" refers to the average transmittance or liquid crystal efficiency in the opening area (ie, the light transmitting area); and the so-called "liquid crystal efficiency" refers to the luminous intensity per unit area.

In the present invention, the pixel electrodes of the display panel are not limited to the shape and arrangement shown in FIG. 3 , and may have other arrangements, as shown in FIG. 9 and FIG. 10 , wherein the area framed by the dotted line is each pixel unit. The area is only represented by the strip electrodes included in the pixel electrode, and the actual design of the pixel electrode still depends on the design of the display panel.

In addition, in the present invention, the pixel unit of the display panel may be a pixel unit capable of emitting three colors, and the arrangement of the pixel unit colors is as shown in FIG. 11A and FIG. 11B ; or a pixel unit capable of emitting four colors, which The arrangement of pixel unit colors is as shown in Figure 12. Among them, R represents the red pixel unit, G represents the green pixel unit, B represents the blue pixel unit, and W represents the white pixel unit. However, the pixel unit color arrangement of the present invention is not limited to this. Under the adjacent pixel units of the same color, the relationship between the first spacing G1, the second spacing G2, the widths W1, W2, and the gap widths S1, S2 described in the foregoing embodiments of the present invention can be met, so that the transmittance of the display panel can be improved. Purpose.

In the foregoing embodiments of the present invention, a horizontally aligned display panel is used as an example; however, in other embodiments of the present invention, when the display panel is a vertically aligned liquid crystal display panel, the aforementioned features are also present.

Furthermore, the display panel prepared by the foregoing embodiments of the present invention can also be used in combination with a touch panel known in the art to be used as a touch display device. At the same time, the display panel or touch display device prepared in the foregoing embodiments of the present invention can be applied to any electronic device known in the art that requires a display screen, such as monitors, mobile phones, notebook computers, cameras, cameras, music Players, mobile navigation devices, TVs, etc.

The above-mentioned embodiments are only examples for convenience of description, and the scope of the rights claimed in the present invention should be based on the scope of the claims, rather than being limited to the above-mentioned embodiments.

Claims (7)

1. A display panel, comprising:

a first substrate having a first pixel unit, a second pixel unit and a third pixel unit, wherein the first pixel unit, the second pixel unit and the third pixel unit are arranged side by side, the first pixel unit and the second pixel unit are adjacent and are pixel units of different colors, and the second pixel unit and the third pixel unit are adjacent and are pixel units of the same color;

a plurality of electrodes disposed on the first substrate and including: a first electrode, a second electrode and a third electrode, wherein the first electrode is arranged in the first pixel unit, the second electrode is arranged in the second pixel unit, and the third electrode is arranged in the third pixel unit; and

a plurality of data lines disposed on the first substrate;

the first electrode and the second electrode are separated by a first space, the second electrode and the third electrode are separated by a second space, and the width of the first space is greater than that of the second space;

wherein, in the normal direction of the first substrate, the data line is not overlapped with the second electrode or the third electrode;

the first electrode, the second electrode and the third electrode respectively comprise a plurality of strip electrodes, the length direction of each strip electrode is the same as the extension direction of the data line, the width of each strip electrode included in the first electrode is smaller than that of each strip electrode included in the second electrode or the third electrode, and the width of a gap between two adjacent strip electrodes in the first electrode is smaller than that between two adjacent strip electrodes in the second electrode or the third electrode.

2. The display panel of claim 1, further comprising a second substrate disposed opposite the first substrate, wherein the second substrate has a black matrix layer disposed thereon, the black matrix layer being a patterned black matrix layer, wherein the black matrix layer is not disposed over the second gap between the second electrode and the third electrode.

3. The display panel of claim 1, further comprising a second substrate disposed opposite to the first substrate, wherein the second substrate has a black matrix layer thereon, the black matrix layer has a first opening and a second opening, the first opening exposes the first electrode, and the second opening simultaneously exposes the second electrode and the third electrode.

4. The display panel of claim 1, wherein the data lines are disposed side by side and respectively disposed between the first electrode and the second electrode, and between the second electrode and the third electrode.

5. The display panel of claim 4, further comprising a second substrate disposed opposite the first substrate, wherein the second substrate has a black matrix layer disposed thereon, the black matrix layer being a patterned black matrix layer, wherein the black matrix layer is not disposed over the data lines disposed between the second electrodes and the third electrodes.

6. The display panel of claim 1, wherein a sum of a width of a stripe electrode included in the first electrode and a width of a gap between two adjacent stripe electrodes is not equal to a sum of a width of a stripe electrode included in the second electrode or the third electrode and a width of a gap between two adjacent stripe electrodes.

7. The display panel of claim 6, wherein the sum of the width of the stripe electrode included in the first electrode and the width of the gap between two adjacent stripe electrodes is smaller than the sum of the width of the stripe electrode included in the second electrode or the third electrode and the width of the gap between two adjacent stripe electrodes.

Images