Pixel structure

Abstract

A pixel structure includes a first sub-pixel unit, a second sub-pixel unit and a third sub-pixel unit. The first sub-pixel unit is configured to correspond to a first region of a display layer of a display device. The first region of the display layer has a first display area. The second sub-pixel unit is configured to correspond to a second region of the display layer. The second region of the display layer has a second display area. The third sub-pixel unit is configured to correspond to a third region of the display layer. The third region of the display layer has a third display area. An area ratio of the first sub-pixel unit, the second sub-pixel unit and the third sub-pixel unit is substantially equal to the first display area: the second display area: the third display area.

Description

Technical Field

[0001] The present invention relates to a display device, and more particularly to a pixel structure of a display device. Prior Technology

[0002] In recent years, electronic ink displays have gradually gained attention, and with technological advancements, electronic ink displays capable of displaying color patterns have been developed. Generally, electronic ink displays use a pixel array substrate to drive ink particles coated within the display layer to produce black and white patterns, and can display color patterns by placing color layers (such as red, blue, and green layers) above the display layer. To optimize the color gamut, contrast, and tone of the displayed colors, the area ratio between different color layers is usually adjusted to optimize optical properties. However, as the area of ​​the color layers is adjusted, the corresponding pixel units on the underlying pixel array substrate are not adjusted accordingly, resulting in a decrease in the image quality displayed by the display and affecting the viewing experience. Therefore, how to improve image quality is a problem that needs to be solved. Summary of the Invention

[0003] This invention provides a pixel structure that can improve the display quality of a display device.

[0004] The pixel structure of the present invention includes a first sub-pixel unit, a second sub-pixel unit, and a third sub-pixel unit. The first sub-pixel unit is configured to correspond to a first region of the display layer of the display device, wherein the first region of the display layer has a first display area. The second sub-pixel unit is configured to correspond to a second region of the display layer, wherein the second region of the display layer has a second display area. The third sub-pixel unit is configured to correspond to a third region of the display layer, wherein the third region of the display layer has a third display area. The area ratio of the first sub-pixel unit, the second sub-pixel unit, and the third sub-pixel unit is substantially equal to the first display area: second display area: third display area.

[0005] In one embodiment of the present invention, the storage capacitors of the first sub-pixel unit, the second sub-pixel unit, and the third sub-pixel unit are substantially the same.

[0006] In one embodiment of the present invention, the first sub-pixel unit, the second sub-pixel unit, and the third sub-pixel unit each include a pixel electrode, an auxiliary electrode, and a first common electrode. The auxiliary electrode is electrically connected to the pixel electrode. The first common electrode is located between the auxiliary electrode and the pixel electrode.

[0007] In one embodiment of the present invention, the area ratio of the pixel electrode of the first sub-pixel unit, the pixel electrode of the second sub-pixel unit, and the pixel electrode of the third sub-pixel unit is substantially equal to the first display area: second display area: third display area.

[0008] In one embodiment of the present invention, the first sub-pixel unit, the second sub-pixel unit, and the third sub-pixel unit further include a second common electrode electrically connected to the first common electrode. In the first sub-pixel unit, the sum of the overlap area between the first common electrode and the pixel electrode and the overlap area between the second common electrode and the auxiliary electrode has a first value. In the second sub-pixel unit, the sum of the overlap area between the first common electrode and the pixel electrode and the overlap area between the second common electrode and the auxiliary electrode has a second value. In the third sub-pixel unit, the sum of the overlap area between the first common electrode and the pixel electrode and the overlap area between the second common electrode and the auxiliary electrode has a third value. The first, second, and third values ​​are substantially the same.

[0009] In one embodiment of the present invention, the first common electrode described above extends along at least two edges of the pixel electrode.

[0010] In one embodiment of the present invention, the shape of the first common electrode includes a rectangular shape with a missing corner, an inverted U-shaped shape, a U-shaped shape, a rectangular ring shape, or an H-shaped shape.

[0011] In one embodiment of the present invention, the first common electrode of the largest of the first sub-pixel unit, the second sub-pixel unit, and the third sub-pixel unit does not overlap with the auxiliary electrode.

[0012] In one embodiment of the present invention, the pixel structure further includes a first data line located on one side of the first sub-pixel unit, wherein the closest distance between the first common electrode of the first sub-pixel unit and the first data line is not less than the closest distance between the pixel electrode of the first sub-pixel unit and the first data line.

[0013] In one embodiment of the present invention, the pixel structure further includes a second data line located between the first sub-pixel unit and the second sub-pixel unit. The coupling capacitance between the pixel electrode of the first sub-pixel unit and the first data line, the coupling capacitance between the pixel electrode of the first sub-pixel unit and the second data line, and the coupling capacitance between the pixel electrode of the second sub-pixel unit and the second data line are close to each other.

[0014] Based on the above, the pixel structure of the present invention includes a first sub-pixel unit, a second sub-pixel unit, and a third sub-pixel unit corresponding to the first region, second region, and third region of the display layer of the display device, and the area ratio of the first sub-pixel unit, the second sub-pixel unit, and the third sub-pixel unit is substantially the same as the area ratio of the first region, the second region, and the third region. Therefore, the image quality of the display device can be improved. In addition, the storage capacitance of the first sub-pixel unit, the second sub-pixel unit, and the third sub-pixel unit is substantially the same, which can also improve the display quality of the display device. Simple Explanation of the Diagram

[0015] Figure 1 is an exploded view of a display device according to an embodiment of the present invention. Figure 2 is a cross-sectional schematic diagram of a display device according to an embodiment of the present invention. Figure 3 is a layout diagram of a pixel structure according to an embodiment of the present invention. Figures 4A to 4D are schematic diagrams of a common electrode according to an embodiment of the present invention. Figure 5 is a partially enlarged schematic diagram of Figure 3. Implementation

[0016] In the accompanying drawings, the thicknesses of layers, films, panels, regions, etc., are enlarged for clarity. Throughout the specification, the same reference numerals denote the same elements. It should be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "connected" to another element, it may be directly on or connected to the other element, or intermediate elements may also be present. Conversely, when an element is referred to as being "directly on" or "directly connected" to another element, no intermediate elements are present. As used herein, "connection" can refer to physical and / or electrical connection. Furthermore, "electrical connection" or "coupling" can refer to the presence of other elements between two elements.

[0017] It should be understood that although the terms "first," "second," etc., may be used herein to describe various elements, components, regions, layers, and / or parts, these elements, components, regions, and / or parts should not be limited by these terms. These terms are used only to distinguish one element, component, region, layer, or part from another. Therefore, "first element," "component," "region," "layer," or "part" discussed below may be referred to as a second element, component, region, layer, or part without departing from the teachings of this document.

[0018] As used herein, “about,” “substantially,” “approximately,” or “similar” includes the value and the average value within an acceptable range of deviations from a particular value as determined by one of ordinary skill in the art, taking into account the measurement under discussion and a particular number of errors associated with the measurement (i.e., limitations of the measurement system). For example, “about” may mean within one or more standard deviations of the value, or within ±30%, ±20%, ±10%, ±5%. Furthermore, as used herein, “about,” “substantially,” “approximately,” or “similar” may be used to select a more acceptable range of deviations or standard deviations depending on the electrical, optical, etch, or other properties, and not necessarily apply to all properties with a single standard deviation.

[0019] Figure 1 is an exploded view of a display device according to an embodiment of the present invention. Figure 2 is a cross-sectional view of a display device according to an embodiment of the present invention. Figure 3 is a layout diagram of a pixel structure according to an embodiment of the present invention. Figures 4A to 4D are schematic diagrams of a common electrode according to an embodiment of the present invention. Figure 5 is a partially enlarged view of region AR in Figure 3. Figure 2 may be a cross-sectional view taken along section line A-A' in Figure 3. For clarity, the insulating layer 160 and the substrate 110 are omitted in Figure 3.

[0020] Referring to Figures 1 to 3, the display device 10 includes a pixel array substrate 100 and a display layer 200. The pixel array substrate 100 includes a plurality of pixel structures PX disposed on a substrate 110. The display layer 200 is disposed on the pixel array substrate 100. That is, the substrate 110, the pixel structures PX, and the display layer 200 are stacked in the z-direction. Therefore, the z-direction can also be referred to as the stacking direction.

[0021] The display layer 200 has a first area R1, a second area R2, and a third area R3. The first area R1, the second area R2, and the third area R3 can each display different colors; for example, the first area R1 displays blue, the second area R2 displays red, and the third area R3 displays green. However, the present invention is not limited thereto. The colors displayed by the first area R1, the second area R2, and the third area R3 can be adjusted according to actual needs.

[0022] In some embodiments, the first region R1, the second region R2, and the third region R3 are arranged sequentially and repeatedly in the x-direction to form columns (e.g., columns ra, rb). The display layer 200 may have multiple columns ra, rb composed of multiple first regions R1, second regions R2, and third regions R3, with the multiple columns ra, rb aligned with each other such that the first region R1, second region R2, and third region R3 of each column (e.g., column ra) are aligned with the first region R1, second region R2, and third region R3 of the adjacent column (e.g., column rb), respectively. That is, multiple first regions R1 can be arranged in the y-direction, multiple second regions R2 can be arranged in the y-direction, and multiple third regions R3 can be arranged in the y-direction. In some embodiments, the x-direction, y-direction, and z-direction intersect each other, for example, orthogonally.

[0023] In some embodiments, the first region R1 has a first display area, the second region R2 has a second display area, and the third region R3 has a third display area. The color gamut of the display device 10 can be improved by adjusting the ratio of the first display area, the second display area, and the third display area. In FIG1, the third display area is schematically shown to be larger than the second display area, and the second display area is larger than the first display area, but this is not intended to limit the present invention. The ratio of the first display area, the second display area, and the third display area is not a fixed range but is adjusted according to the required optical specifications.

[0024] In some embodiments, the display layer 200 may be a component that encapsulates a display medium into a layer. The display medium may include electrophoretic display materials or other suitable display materials. The display layer 200 may encapsulate the display medium using a microcup structure, microcapsule structure, or other methods, and this invention is not limited thereto. For example, in FIG2, the display layer 200 may include a display medium layer 210, a microcup structure 220, and a capping layer 230. The display medium layer 210 is disposed in the microcup structure 220 so that the display layer 200 has a first region R1, a second region R2, and a third region R3. The capping layer 230 covers the display medium layer 210 and the microcup structure 220. In some embodiments, the display medium layer 210 may display black and white or color, and this invention is not limited thereto. In some embodiments, the display medium layer 210 may include an electrophoretic solution 212 and charged particles 214 distributed in the electrophoretic solution. The charged particles 214 may include black particles, white particles, and / or particles of other colors (e.g., red, yellow, etc.).

[0025] In some embodiments, the display device 10 may further include a filter layer (not shown) disposed on the display layer 200. The filter layer may be configured with different colored filters according to the colors to be displayed in the first region R1, the second region R2, and the third region R3 of the display layer.

[0026] In some embodiments, a plurality of pixel structures PX of the pixel array substrate 100 may be arrayed on the substrate 110 along the x and y directions. In some embodiments, the substrate 110 may be made of glass, plastic, or other suitable materials, wherein the plastic may include, for example, polyethylene terephthalate (PET), polyimide (PI), polycarbonate (PC), polyacrylate (PA), or other suitable plastic materials. In some embodiments, the substrate 110 may be flexible.

[0027] In some embodiments, the pixel structure PX includes a first sub-pixel unit PX1, a second sub-pixel unit PX2, and a third sub-pixel unit PX3. The first sub-pixel unit PX1 is configured to correspond to a first region R1 of the display layer 200, the second sub-pixel unit PX2 is configured to correspond to a second region R2 of the display layer 200, and the third sub-pixel unit PX3 is configured to correspond to a third region R3 of the display layer 200.

[0028] In some embodiments, the pixel structure PX further includes a first data line DL1, a second data line DL2, a third data line DL3, and a scan line SL. The first data line DL1, the second data line DL2, and the third data line DL3 are arranged in the x-direction and extend in the y-direction, while the scan line SL extends in the x-direction. The first data line DL1, the second data line DL2, and the third data line DL3 may be located on one side of the first sub-pixel unit PX1, the second sub-pixel unit PX2, and the third sub-pixel unit PX3, respectively. Taking Figure 3 as an example, the first data line DL1, the second data line DL2, and the third data line DL3 are located on the left side of the first sub-pixel unit PX1, the second sub-pixel unit PX2, and the third sub-pixel unit PX3, respectively. The first sub-pixel unit PX1 is located between the first data line DL1 and the second data line DL2, and the second sub-pixel unit PX2 is located between the second data line DL2 and the third data line DL3. The second data line DL2 is located between the first sub-pixel unit PX1 and the second sub-pixel unit PX2, and the third data line DL3 is located between the second sub-pixel unit PX2 and the third sub-pixel unit PX3. In some embodiments, the scan line SL may be located below the first sub-pixel unit PX1, the second sub-pixel unit PX2, and the third sub-pixel unit PX3.

[0029] In some embodiments, the first sub-pixel unit PX1, the second sub-pixel unit PX2, and the third sub-pixel unit PX3 respectively include active elements T1, T2, and T3. Active elements T1, T2, and T3 may be, for example, thin-film transistors, which include gates (e.g., G1, G2, G3), semiconductor layers (e.g., AM1, AM2, AM3), sources (e.g., S1, S2, S3), and drains (e.g., D1, D2, D3).

[0030] In some embodiments, the source S1 of active element T1 can be electrically connected to the first data line DL1, the source S2 of active element T2 can be electrically connected to the second data line DL2, and the source S3 of active element T3 can be electrically connected to the third data line DL3. The gate G1 of active element T1, the gate G2 of active element T2, and the gate G3 of active element T3 can be electrically connected to the scan line SL.

[0031] In some embodiments, the first sub-pixel unit PX1, the second sub-pixel unit PX2, and the third sub-pixel unit PX3 may each include a pixel electrode 120, an auxiliary electrode 130, a first common electrode 140, and a second common electrode 150 disposed in an insulating layer 160, wherein the insulating layer 160 separates the pixel electrode 120, the auxiliary electrode 130, the first common electrode 140, and the second common electrode 150. The pixel electrode 120, the auxiliary electrode 130, the first common electrode 140, and the second common electrode 150 are located in different film layers and are stacked from bottom to top in the z-direction in the order of the second common electrode 150, the auxiliary electrode 130, the first common electrode 140, and the pixel electrode 120. Therefore, the first common electrode 140 is located between the auxiliary electrode 130 and the pixel electrode 120, and the auxiliary electrode 130 is located between the first common electrode 140 and the second common electrode 150.

[0032] In some embodiments, the auxiliary electrode 130 is located in the same film layer as the first data line DL1, the second data line DL2, and the third data line DL3, but the present invention is not limited thereto. In some embodiments, the second common electrode 150 is located in the same film layer as the scan line SL, but the present invention is not limited thereto.

[0033] In some embodiments, the auxiliary electrode 130 and the pixel electrode 120 may be electrically connected via a conductive via V1 to have the same potential. In some embodiments, the auxiliary electrode 130 and the pixel electrode 120 may be electrically connected to the drain (e.g., D1, D2, or D3) of the active element (e.g., active element T1, T2, or T3) in their sub-pixel units (e.g., the first sub-pixel unit PX1, the second sub-pixel unit PX2, or the third sub-pixel unit PX3).

[0034] In some embodiments, the first common electrode 140 and the second common electrode 150 may be electrically connected via a conductive via V2 to have the same potential.

[0035] In some embodiments, the first common electrode 140 and the pixel electrode 120 partially overlap in the z-direction, and the second common electrode 150 and the auxiliary electrode 130 partially overlap in the z-direction to form storage capacitors for sub-pixel units (e.g., the first sub-pixel unit PX1, the second sub-pixel unit PX2, and the third sub-pixel unit PX3) between the first common electrode 140 and the pixel electrode 120 and between the second common electrode 150 and the auxiliary electrode 130.

[0036] In some embodiments, a capacitance may also be generated between the first common electrode 140 and the auxiliary electrode 130, but since the distance between the first common electrode 140 and the auxiliary electrode 130 is relatively large, the generated capacitance is small and can be ignored.

[0037] For ease of description and understanding, the pixel electrode 120, auxiliary electrode 130, first common electrode 140, and second common electrode 150 of the first sub-pixel unit PX1 are labeled as 120a, 130a, 140a, and 150a, respectively; the pixel electrode 120, auxiliary electrode 130, first common electrode 140, and second common electrode 150 of the second sub-pixel unit PX2 are labeled as 120b, 130b, 140b, and 150b, respectively; and the pixel electrode 120, auxiliary electrode 130, first common electrode 140, and second common electrode 150 of the third sub-pixel unit PX3 are labeled as 120c, 130c, 140c, and 150c, respectively.

[0038] In some embodiments, the area ratio of the first sub-pixel unit PX1, the second sub-pixel unit PX2, and the third sub-pixel unit PX3 is substantially equal to the first display area: second display area: third display area, or the area ratio of the pixel electrode 120a of the first sub-pixel unit PX1, the pixel electrode 120b of the second sub-pixel unit PX2, and the pixel electrode 120c of the third sub-pixel unit PX3 is substantially approximately equal to the first display area: second display area: third display area, thereby improving the quality of the displayed image.

[0039] In some embodiments, the area of ​​the pixel electrode 120a of the first sub-pixel unit PX1 is substantially equal to the first display area, the area of ​​the pixel electrode 120b of the second sub-pixel unit PX2 is substantially equal to the second display area, and the area of ​​the pixel electrode 120c of the third sub-pixel unit PX3 is substantially equal to the third display area, so as to effectively drive the corresponding display layer 200 areas (i.e., the first area R1, the second area R2, and the third area R3), thereby improving the quality of the displayed image.

[0040] In some embodiments, the storage capacitors of the first sub-pixel unit PX1, the second sub-pixel unit PX2, and the third sub-pixel unit PX3 are substantially the same, so that sub-pixel units with different area sizes can have similar electrical properties, thereby improving the display quality of the display device 10.

[0041] In some embodiments, in the first sub-pixel unit PX1, the sum of the overlapping areas of the first common electrode 140a and pixel electrode 120a and the overlapping areas of the second common electrode 150a and auxiliary electrode 130a has a first value. In the second sub-pixel unit PX2, the sum of the overlapping areas of the first common electrode 140b and pixel electrode 120b and the overlapping areas of the second common electrode 150b and auxiliary electrode 130b has a second value. In the third sub-pixel unit PX3, the sum of the overlapping areas of the first common electrode 140c and pixel electrode 120c and the overlapping areas of the second common electrode 150c and auxiliary electrode 130c has a third value. The first, second, and third values ​​are substantially the same, so that the first sub-pixel unit PX1, the second sub-pixel unit PX2, and the third sub-pixel unit PX3 have substantially the same storage capacitance. Here, the overlapping area refers to the area of ​​the overlapping portion in the z-direction.

[0042] In some embodiments, when the overlap area of ​​the second common electrode 150 and the auxiliary electrode 130 of the first sub-pixel unit PX1, the second sub-pixel unit PX2, and the third sub-pixel unit PX3 is the same, the overlap area of ​​the first common electrode 140 and the pixel electrode 120 of the first sub-pixel unit PX1, the second sub-pixel unit PX2, and the third sub-pixel unit PX3 is also the same.

[0043] In some embodiments, the storage capacity of each sub-pixel unit (including the first sub-pixel unit PX1, the second sub-pixel unit PX2, and the third sub-pixel unit PX3) in the pixel structure PX can be designed based on the sub-pixel unit with the smallest area in the pixel structure PX. In this embodiment, the area of ​​the first sub-pixel unit PX1 is smaller than that of the second sub-pixel unit PX2 and the third sub-pixel unit PX3, so it can be designed based on the first sub-pixel unit PX1.

[0044] In some embodiments, the smallest sub-pixel unit (e.g., the first sub-pixel unit PX1) may be designed to conform to Equation 1 below, and it is assumed that the charging rate of the smallest sub-pixel unit is between 70% and 95%. Cst / A*K=40~60 (Equation 1), Where Cst is the sub-pixel storage capacitance in picofarads (pF); A is the sub-pixel area in square micrometers (μm2); and K is a constant that can be adjusted according to design requirements, for example, K=1000000. By means of the above, the sub-pixel storage capacitance of the sub-pixel unit with the smallest area can be obtained. Then, the remaining sub-pixel units (e.g., the second sub-pixel unit PX2 and the third sub-pixel unit PX3) can be designed according to the obtained sub-pixel storage capacitance to determine the size of the overlap area between the first common electrode 140 and the pixel electrode 120 and / or the second common electrode 150 and the auxiliary electrode 130.

[0045] In some embodiments, when the overlap area of ​​the second common electrode 150 and the auxiliary electrode 130 of the second sub-pixel unit PX2 and the third sub-pixel unit PX3 is fixed, the predetermined storage capacity can be achieved by changing the area of ​​the first common electrode 140.

[0046] In some embodiments, the first common electrode 140a of the smallest sub-pixel unit (e.g., the first sub-pixel unit PX1) in the pixel structure PX may overlap with the pixel electrode 120a, the auxiliary electrode 130a, and the second common electrode 150a in the z-direction. In some embodiments, the first common electrode 140a does not overlap with the active element T1 in the z-direction, such that the shape of the first common electrode 140a is a rectangle with a missing corner or similar.

[0047] In some embodiments, the first common electrode 140 of the largest sub-pixel unit (e.g., the third sub-pixel unit PX3) and / or the second largest sub-pixel unit (e.g., the second sub-pixel unit PX2) in the pixel structure PX can extend along at least two sides of the edge of the pixel electrode 120, for example, along both sides of the pixel electrode 120 near the data line. Specifically, the first common electrode 140b can extend along the side of the pixel electrode 120b near the second data line DL2 and the side near the third data line DL3, and the first common electrode 140c can extend along the side of the pixel electrode 120c near the third data line DL3 and the side near the first data line DL1 of the adjacent pixel structure PX. In this way, the first common electrodes 140b and 140c can play a shielding role, which reduces the coupling capacitance between the pixel electrodes 120b and 120c and the data lines DL2 and DL3, thereby matching the coupling capacitance between the smallest sub-pixel unit (e.g., the first sub-pixel unit PX1) and its adjacent data lines (e.g., the first data line DL1 or the second data line DL2).

[0048] In other words, in this embodiment, the coupling capacitance between the pixel electrode 120a of the first sub-pixel unit PX1 and the first data line DL1, the coupling capacitance between the pixel electrode 120a of the first sub-pixel unit PX1 and the second data line DL2, the coupling capacitance between the pixel electrode 120b of the second sub-pixel unit PX2 and the second data line DL2, the coupling capacitance between the pixel electrode 120b of the second sub-pixel unit PX2 and the third data line DL3, the coupling capacitance between the pixel electrode 120c of the third sub-pixel unit PX3 and the third data line DL3, and the coupling capacitance between the pixel electrode 120c of the third sub-pixel unit PX3 and the first data line DL1 of the adjacent pixel structure PX can be close to each other. This reduces the possibility of crosstalk and thus improves the display quality of the display device 10. Here, "coupling capacitance close to each other" means that the difference between the two coupling capacitances is in the range of 10% to 15% or less.

[0049] In some embodiments, the auxiliary electrode 130c (and / or auxiliary electrode 130b) of the largest sub-pixel unit (e.g., the third sub-pixel unit PX3) and / or the second largest sub-pixel unit (e.g., the second sub-pixel unit PX2) in the pixel structure PX overlaps with the second common electrode 150c (and / or the second common electrode 150b) in the z-direction, but does not overlap with the first common electrode 140c (and / or the first common electrode 140b) in the z-direction.

[0050] In some embodiments, as shown in FIG3, the first common electrodes 140b and 140c have an inverted U-shaped shape, but the present invention is not limited thereto. The shapes of the first common electrodes 140b and 140c may include an inverted U-shaped shape (as shown in FIG4A), a U-shaped shape (as shown in FIG4B), a rectangular ring shape (as shown in FIG4C), an H-shaped shape (as shown in FIG4D), or other suitable shapes. Although FIG3 illustrates the first common electrodes 140b and 140c having the same shape, it is not intended to limit the present invention. In other embodiments, the shapes of the first common electrodes 140b and 140c may be different.

[0051] In some embodiments, the closest distance between the first common electrode 140 of each sub-pixel unit (i.e., the first sub-pixel unit PX1, the second sub-pixel unit PX2, and the third sub-pixel unit PX3) and an adjacent data line (e.g., the first data line DL1, the second data line DL2, or the third data line DL3) in the pixel structure PX is not less than the closest distance between the pixel electrode 120 and the adjacent data line DL. For example, as shown in FIG5, the closest distance d2 between the first common electrode 140b of the second sub-pixel unit PX2 and the second data line DL2 is greater than or equal to the closest distance d1 between the pixel electrode 120b and the second data line DL2. When the closest distance d2 is less than the closest distance d1, power consumption may increase, resulting in energy waste.

[0052] In some embodiments, the first common electrode 140 of each sub-pixel unit (i.e., the first sub-pixel unit PX1, the second sub-pixel unit PX2, and the third sub-pixel unit PX3) in the pixel structure PX is substantially the same as the nearest distance between it and the adjacent data line (e.g., the first data line DL1, the second data line DL2, or the third data line DL3).

[0053] In some embodiments, the difference between the closest distance d2 and the closest distance d1 (i.e., d2-d1) does not exceed 2.5 μm, so as to effectively screen the pixel electrode 120b and / or auxiliary electrode 130b with the second data line DL2, thereby reducing the coupling capacitance between the pixel electrode 120b and the second data line DL2. In some embodiments, the closest distance d1 can be between 1 μm and 15 μm. It should be understood that although the above description uses the second sub-pixel unit PX2 and the second data line DL2 as an example, the second sub-pixel unit PX2 and the adjacent third data line DL3, the first sub-pixel unit PX1 and the adjacent second data line DL2 and the first data line DL1, and the third sub-pixel unit PX3 and the adjacent third data line DL3 and the first data line DL1 also follow the same principle.

[0054] In summary, the pixel structure of the present invention includes a first sub-pixel unit, a second sub-pixel unit, and a third sub-pixel unit corresponding to the first, second, and third regions of the display layer of the display device, and the area ratio of the first, second, and third sub-pixel units is substantially the same as the area ratio of the first, second, and third regions. Therefore, the image quality of the display device can be improved. Furthermore, the storage capacitance of the first, second, and third sub-pixel units is substantially the same, which also improves the display quality of the display device.

[0055] Although the present invention has been disclosed above by way of embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

[0056] 10: Display device 100: Pixel array substrate 110: Base 120, 120a, 120b, 120c: Pixel electrodes 130, 130a, 130b, 130c: Auxiliary electrodes 140, 140a, 140b, 140c: First common electrode 150, 150a, 150b, 150c: Second common electrode 160: Insulation layer 200: Display Layer 210: Display media layer 212: Electrophoresis solution 214: Charged particles 220: Microcup structure 230: Cap layer A-A': section line AM1, AM2, AM3: Semiconductor layers AR: Region D1, D2, D3: Absorption DL1: First Data Line DL2: Second Data Line DL3: Third Data Line G1, G2, G3: Gate PX: Pixel Structure PX1: first sub-pixel unit PX2: Second Subpixel Unit PX3: Third Subpixel Unit R1: Zone 1 R2: Second Zone R3: Third District S1, S2, S3: Source poles SL: Scan line T1, T2, T3: Active components V1, V2: Conductive vias d1, d2: Closest distance ra,rb: columns x, y, z: Direction

Claims

1. A pixel structure, comprising: A first sub-pixel unit is configured to correspond to a first area of ​​a display layer of a display device, wherein the first area of ​​the display layer has a first display area; a second sub-pixel unit is configured to correspond to a second area of ​​the display layer, wherein the second area of ​​the display layer has a second display area; and a third sub-pixel unit is configured to correspond to a third area of ​​the display layer, wherein the third area of ​​the display layer has a third display area, wherein the area ratio of the first sub-pixel unit, the second sub-pixel unit, and the third sub-pixel unit is substantially equal to the ratio of the first display area to the second display area to the third display area, wherein each of the first sub-pixel unit, the second sub-pixel unit, and the third sub-pixel unit includes: a pixel electrode; an auxiliary electrode electrically connected to the pixel electrode; and a first common electrode located between the auxiliary electrode and the pixel electrode.

2. The pixel structure as claimed in claim 1, wherein the storage capacitors of the first sub-pixel unit, the second sub-pixel unit, and the third sub-pixel unit are substantially the same.

3. The pixel structure as claimed in claim 1, wherein the area ratio of the pixel electrode of the first sub-pixel unit, the pixel electrode of the second sub-pixel unit, and the pixel electrode of the third sub-pixel unit is substantially equal to the first display area: the second display area: the third display area.

4. The pixel structure as described in claim 1, wherein the first sub-pixel unit, the second sub-pixel unit, and the third sub-pixel unit each further comprise: The second common electrode is electrically connected to the first common electrode. In the first sub-pixel unit, the sum of the overlapping area of ​​the first common electrode and the pixel electrode and the overlapping area of ​​the second common electrode and the auxiliary electrode has a first value. In the second sub-pixel unit, the sum of the overlapping area of ​​the first common electrode and the pixel electrode and the overlapping area of ​​the second common electrode and the auxiliary electrode has a second value. In the third sub-pixel unit, the sum of the overlapping area of ​​the first common electrode and the pixel electrode and the overlapping area of ​​the second common electrode and the auxiliary electrode has a third value. The first value, the second value, and the third value are substantially the same.

5. The pixel structure as claimed in claim 1, wherein the first common electrode extends along at least two sides of the edge of the pixel electrode.

6. The pixel structure as claimed in claim 1, wherein the shape of the first common electrode includes a rectangular shape with a notched corner, an inverted U-shaped shape, a U-shaped shape, a rectangular ring shape, or an H-shaped shape.

7. The pixel structure as claimed in claim 1, wherein the first common electrode of the largest of the first sub-pixel unit, the second sub-pixel unit, and the third sub-pixel unit does not overlap with the auxiliary electrode.

8. The pixel structure as described in claim 1, further comprising: A first data line is located on one side of the first sub-pixel unit, wherein the closest distance between the first common electrode of the first sub-pixel unit and the first data line is not less than the closest distance between the pixel electrode of the first sub-pixel unit and the first data line.

9. The pixel structure as described in claim 8, further comprising: The second data line is located between the first sub-pixel unit and the second sub-pixel unit, wherein the coupling capacitance between the pixel electrode of the first sub-pixel unit and the first data line, the coupling capacitance between the pixel electrode of the first sub-pixel unit and the second data line, and the coupling capacitance between the pixel electrode of the second sub-pixel unit and the second data line are close to each other.

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