TWI820924B - Display device - Google Patents

Abstract

A display device includes a first substrate having a bending axis; and a plurality of pixel units disposed on the first substrate, wherein each pixel unit includes a scan line; a plurality of data lines extending in a direction intersecting the scan line; and a plurality of sub-pixels electrically connected to the scan line collectively and the plurality of data lines respectively, wherein each sub-pixel includes a switching element electrically connected to the scan line and one of the plurality of data lines; a pixel electrode extending in a direction intersecting the bending axis and passing through the plurality of data lines; and a connection line electrically connecting a drain electrode of the switching element with the pixel electrode, wherein a length of the connection line of a first sub-pixel of the plurality of sub-pixels is longer than a length of the connection line of at least one of the rest sub-pixels of the plurality of sub-pixels.

Description

display device

The present invention relates to a display device.

A liquid crystal display device is a flat-panel display device composed of liquid crystal molecules sandwiched between a pixel array substrate and a counter substrate. The cell gap between the pixel array substrate and the counter substrate will affect the display device. reaction speed. Since the production method of integrating the color filter structure into the pixel array substrate (Color Filter on Array, COA) has made it difficult to reduce the substrate gap, in order to further improve the response speed of the display device, it is necessary to integrate the color filter structure into the opposite The manufacturing method of the substrate can further reduce the substrate gap. As a result, since the color filter structure and the pixel array are located on different substrates, when the display device is bent, color washout and color mixing often occur due to misalignment between the color filter structure and the pixel structure. Or image defects such as electric field interference (V-crosstalk).

The present invention provides a display device with a reduced substrate gap (cell gap) and good display quality when bent.

One embodiment of the present invention provides a display device, including: a first substrate having a bending axis; and a plurality of pixel units disposed on the first substrate, and each pixel unit includes: a scanning line; a plurality of data lines, Its extension direction intersects with the scan line; and a plurality of sub-pixels are electrically connected to the scan line and are electrically connected to a plurality of data lines respectively. Each sub-pixel includes: a switching element, which is electrically connected to the scan line and the data line; The pixel electrode, the extending direction of which intersects with the bending axis and extends through a plurality of data lines; and the connecting line, which electrically connects the drain electrode of the switching element and the pixel electrode, wherein the connection of the first sub-pixel among the plurality of sub-pixels is The length of the line is greater than the length of the connecting line of at least one of the remaining sub-pixels.

In an embodiment of the present invention, the above-mentioned scan line is located on one side of the pixel unit.

In an embodiment of the present invention, the lengths of the connecting lines of the plurality of sub-pixels increase along the extending direction of the scanning line.

In an embodiment of the present invention, the above-mentioned plurality of sub-pixels respectively include multiple groups of four-alignment domains (domains), and multiple data lines separate the multiple groups of four-alignment domains.

In an embodiment of the present invention, the above-mentioned scan line is located between any two adjacent pixel electrodes in the pixel unit.

In an embodiment of the present invention, the connecting lines of the plurality of sub-pixels extend in different directions.

In an embodiment of the present invention, each of the plurality of sub-pixels includes a set of four alignment areas.

In an embodiment of the present invention, each of the above-mentioned sub-pixels further includes a first transparent electrode, which is disposed on the first substrate and overlaps the pixel electrode.

In an embodiment of the present invention, the above-mentioned display device further includes a flat layer located between the first transparent electrode and the pixel electrode.

In an embodiment of the present invention, the above-mentioned first transparent electrode has a first opening, the flat layer has a second opening, and the connecting line is electrically connected to the pixel electrode through the first opening and the second opening.

In an embodiment of the present invention, the above-mentioned display device further includes a second substrate and a color filter structure disposed on the second substrate, wherein the second substrate is opposite to the first substrate, and the color filter structure is located between the first substrate and the first substrate. between the second substrate.

In an embodiment of the present invention, the above-mentioned display device further includes a second transparent electrode, which is disposed on the second substrate and overlaps the color filter structure.

In an embodiment of the present invention, each of the above-mentioned pixel units further includes at least one extension line connecting the second sub-pixel among the plurality of sub-pixels, and the connected connection line and the extension line extend through the plurality of sub-pixels. The pixel electrode of the pixel.

In an embodiment of the present invention, each of the above-mentioned pixel units further includes a plurality of common electrodes, respectively extending through a plurality of data lines along the extension direction of the pixel electrode.

In an embodiment of the present invention, the plurality of common electrodes overlap the gap between any two adjacent pixel electrodes.

In an embodiment of the present invention, the plurality of common electrodes and the gate of the switching element belong to the same film layer.

In an embodiment of the present invention, in each pixel unit, the polarity of the pixel electrode of one of the plurality of sub-pixels is different from the polarity of at least one pixel electrode of the remaining sub-pixels.

In order to make the above-mentioned features and advantages of the present invention more obvious and easy to understand, embodiments are given below and described in detail with reference to the accompanying drawings.

In the drawings, the thickness of layers, films, panels, regions, etc., are exaggerated for clarity. Throughout this specification, the same reference numbers refer to the same elements. It will 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 can be directly on or connected to the other element, or Intermediate elements may also be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. As used herein, "connected" may refer to physical and/or electrical connection. Furthermore, "electrical connection" or "coupling" can mean the presence of other components between two components.

It will be understood that, although the terms "first," "second," "third," etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections /or parts shall not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first "element", "component", "region", "layer" or "section" discussed below could be termed a second element, component, region, layer or section without departing from the teachings herein.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms including "at least one" or "and/or" unless the content clearly dictates otherwise. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. It will also be understood that when used in this specification, the terms "comprising" and/or "including" designate the presence of stated features, regions, integers, steps, operations, elements and/or parts, but do not exclude the presence of one or more The presence or addition of other features, regions, integers, steps, operations, elements, parts and/or combinations thereof.

Additionally, relative terms, such as "lower" or "bottom" and "upper" or "top," may be used herein to describe one element's relationship to another element as illustrated in the Figures. It will be understood that relative terms are intended to encompass different orientations of the device in addition to the orientation illustrated in the figures. For example, if the device in one of the figures is turned over, elements described as "below" other elements would then be oriented "above" the other elements. Thus, the exemplary term "lower" may include both "lower" and "upper" orientations, depending on the particular orientation of the drawing. Similarly, if the device in one of the figures is turned over, elements described as "below" or "beneath" other elements would then be oriented "above" the other elements. Thus, the exemplary terms "lower" or "lower" may include both upper and lower orientations.

As used herein, "about," "approximately," or "substantially" includes the stated value and those within ordinary skill in the art, given the specific amount of error associated with the measurement in question (i.e., the limitations of the measurement system). An average within a range of acceptable deviations for a specific value determined by a person. For example, "about" may mean within one or more standard deviations of the stated value, or within ±30%, ±20%, ±10%, ±5%. Furthermore, the terms "approximately", "approximately", or "substantially" used in this article can be used to select a more acceptable deviation range or standard deviation based on optical properties, etching properties, or other properties, and one standard deviation does not apply to all. nature.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be construed to have meanings consistent with their meanings in the context of the relevant technology and the present invention, and are not to be construed as idealistic or excessive Formal meaning, unless expressly defined as such herein.

Example embodiments are described herein with reference to cross-sectional illustrations that are schematic illustrations of idealized embodiments. Accordingly, variations in the shape of the illustrations, for example as a result of manufacturing techniques and/or tolerances, are to be expected. Thus, embodiments described herein should not be construed as limited to the particular shapes of regions illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. For example, regions shown or described as flat may typically have rough and/or non-linear characteristics. Additionally, the acute angles shown may be rounded. Accordingly, the regions shown in the figures are schematic in nature and their shapes are not intended to show the precise shapes of the regions and are not intended to limit the scope of the claims.

FIG. 1A is a partial top view of a display device 10 according to an embodiment of the present invention. Figure 1B is a schematic cross-sectional view taken along section line A-A' in Figure 1A. In order to make the expression of the diagram simpler, FIG. 1A schematically shows the substrate 110, the scanning line SL, the data line DL, the switching element T, the pixel electrode PE, the connecting line CL, the extension line EL, the common electrodes CE1, CE2, and the color The filter structure CF and the light-shielding structure BM are included, and other components are omitted.

Referring to FIGS. 1A and 1B , the display device 10 includes a substrate 110 and a plurality of pixel units PU. The substrate 110 has a bending axis BA, and a plurality of pixel units PU are disposed on the substrate 110 . Each pixel unit PU includes: a scan line SL, a plurality of data lines DL, and a plurality of sub-pixels SP. The extension directions of the plurality of data lines DL intersect with the scan line SL. The plurality of sub-pixels SP are electrically connected to the scan lines SL, and are electrically connected to the plurality of data lines DL respectively. Each sub-pixel SP includes: a switching element T, a pixel electrode PE, and a connection line CL. The switching element T is electrically connected to the scan line SL and the data line DL. The extension direction of the pixel electrode PE intersects with the bending axis BA, and extends through a plurality of data lines DL. The connection line CL electrically connects the drain D of the switching element T and the pixel electrode PE, wherein the length of the connection line CL2 of the sub-pixel SP2 among the plurality of sub-pixels SP is longer than the connection of at least one of the sub-pixels SP1 and SP2. The length of line CL1.

In the display device 10 according to an embodiment of the present invention, by the extension direction of the pixel electrode PE intersecting the bending axis BA, image defects when the display device 10 is bent can be avoided, thereby improving the display when the display device 10 is bent. Quality.

Below, the implementation of each element of the display device 10 will be continued to be described with reference to the drawings, but the present invention is not limited thereto. Referring to FIG. 1A , in this embodiment, the substrate 110 may be a flexible substrate. For example, the material of the substrate 110 may be polyimide (PI), polycarbonate (PC), polyester (PET), cyclic olefin copolymer (COC), metal. Chromium compound base material - metallocene-based cyclic olefin copolymer (mCOC) or other appropriate materials, but the invention is not limited to this. In some embodiments, the bending axis BA of the substrate 110 is parallel to the direction Y. In other words, when the display device 10 is bent, the substrate 110 can be on the same horizontal plane along the direction Y and on different horizontal planes along the direction X. , where direction Y can intersect direction X. For example, in some embodiments, direction Y may be orthogonal to direction X.

The plurality of pixel units PU of the display device 10 may be arranged in an array on the substrate 110, but the invention is not limited thereto. The pixel unit PU may include a plurality of data lines DL, a scan line SL, and a plurality of sub-pixels SP. For example, the data lines DL may include data lines DL1, DL2, and DL3, the data lines DL1, DL2, and DL3 may extend along the direction Y, and the data lines DL1, DL2, and DL3 may be arranged along the direction X. The scanning line SL may extend along the direction X. In other words, the extending direction of the scanning line SL intersects the data lines DL1, DL2, and DL3. In this embodiment, the scan line SL may be located on one side of the pixel unit PU, such as the upper side, but the invention is not limited thereto.

In this embodiment, the plurality of sub-pixels SP may include sub-pixel SP1, sub-pixel SP2 and sub-pixel SP3. The sub-pixel SP1 may include a switching element T1, a pixel electrode PE1 and a connection line CL1. The switching element T1 is electrically connected to the scan line SL and the data line DL1, and the connection line CL1 is electrically connected to the switching element T1 and the pixel electrode PE1. For example, the switching element T1 may include a gate G1, a source S1, a drain D1, and a semiconductor layer CH1. The gate G1 is electrically connected to the scan line SL, the source S1 is electrically connected to the data line DL1, and the drain D1 is electrically connected to the connection line CL1, and the pixel electrode PE1 is electrically connected to the connection line CL1 through the opening O1.

The sub-pixel SP2 may include a switching element T2, a pixel electrode PE2 and a connection line CL2. The switching element T2 is electrically connected to the scan line SL and the data line DL2, and the connection line CL2 is electrically connected to the switching element T2 and the pixel electrode PE2. The switching element T2 may include a gate G2, a source S2, a drain D2 and a semiconductor layer CH2. The gate G2 is electrically connected to the scan line SL, the source S2 is electrically connected to the data line DL2, and the drain D2 is electrically connected to the connection line. CL2 is electrically connected, and the pixel electrode PE2 is electrically connected to the connection line CL2 through the opening O2.

The sub-pixel SP3 may include a switching element T3, a pixel electrode PE3 and a connection line CL3. The switching element T3 is electrically connected to the scan line SL and the data line DL3, and the connection line CL3 is electrically connected to the switching element T3 and the pixel electrode PE3. The switching element T3 may include a gate G3, a source S3, a drain D3 and a semiconductor layer CH3. The gate G3 is electrically connected to the scan line SL, the source S3 is electrically connected to the data line DL3, and the drain D3 is electrically connected to the connection line. CL3 is electrically connected, and the pixel electrode PE3 is electrically connected to the connection line CL3 through the opening O3.

The pixel electrode PE may include pixel electrodes PE1, PE2, and PE3. The pixel electrodes PE1, PE2, and PE3 may extend along the direction X. In other words, the extension direction of the pixel electrodes PE1, PE2, and PE3 may be parallel to the extension direction of the scan line SL. That is to say, the extending directions of the pixel electrodes PE1, PE2, and PE3 may intersect with the extending directions of the bending axis BA or the data lines DL1, DL2, and DL3, and the arrangement directions of the pixel electrodes PE1, PE2, and PE3 may be parallel to the substrate 110 The extension direction of the bending axis BA.

The connection lines CL may include connection lines CL1, CL2, and CL3. The connecting lines CL1, CL2, and CL3 can extend along the direction Y, the connecting lines CL1, CL2, and CL3 can be arranged along the direction X, and the length of the connecting line CL1 can be shorter than the length of the connecting line CL2, and the length of the connecting line CL2 can be shorter than the connecting line CL3. length. In other words, the lengths of the connection lines CL1, CL2, and CL3 may increase along the extending direction of the scan line SL.

In some embodiments, each pixel unit PU further includes at least one extension line EL. The extension line EL can be connected to the connection line CL, and the connected connection line CL and the extension line EL extend through the pixel electrodes PE of multiple sub-pixels SP. . For example, in this embodiment, the extension line EL of the pixel unit PU may include an extension line EL1, the extension line EL1 may be connected to the connection line CL1, and the connected connection line CL1 and the extension line EL1 extend through the sub-pixel SP1, Pixel electrodes PE1, PE2 and PE3 of SP2 and SP3. In some embodiments, the extension line EL of the pixel unit PU may also include an extension line EL2. The extension line EL2 may be connected to the connection line CL2, and the connected connection line CL2 and the extension line EL2 extend through the sub-pixels SP1, SP2, and SP3. The pixel electrodes PE1, PE2 and PE3. In some embodiments, the extension line EL of the pixel unit PU may also include an extension line EL3. The extension line EL3 may be connected to the connection line CL3, and the connected connection line CL3 and the extension line EL3 extend through the sub-pixels SP1, SP2, and SP3. The pixel electrodes PE1, PE2 and PE3. In some embodiments, the total length of the connected connection line CL3 and the extension line EL3 is approximately equal to the total length of the connected connection line CL2 and the extension line EL2, and the total length of the connected connection line CL2 and the extension line EL2 is approximately equal to the total length of the connected connection line CL2 and the extension line EL2. The total length of the connecting line CL1 and the extension line EL1.

In this embodiment, the display device 10 may further include a gate insulating layer GI, and the gate insulating layer GI is located between the gates G1, G2, G3 and the semiconductor layers CH1, CH2, CH3. In some embodiments, the display device 10 may further include a passivation layer I1 and a planarization layer I2. The passivation layer I1 may be located between the planar layer I2 and the switching elements T1, T2, and T3. The planar layer I2 may be located between the picture element and the switching element T1, T2, or T3. between the pixel electrodes PE1, PE2, PE3 and the transparent electrode TE1, and the openings O1, O2, and O3 can penetrate the flat layer I2 and the passivation layer I1 respectively, so that the pixel electrodes PE1, PE2, and PE3 can pass through the openings O1, O2, and O3 respectively. Connect the cables CL1, CL2, and CL3.

In some embodiments, the passivation layer I1 may include inorganic materials suitable for passivation layers, such as silicon oxide (SiOx), silicon nitride (SiNx) or other suitable materials. In some embodiments, the flat layer I2 includes an organic insulating material suitable for Ultra High Aperture (UHA) technology. For example, the flat layer I2 may include an acrylic material, a siloxane material, or an acrylic material. ) material, polyimide material, or epoxy material, etc. Therefore, the flat layer I2 can also act as a hard mask in the process of patterning the passivation layer I1.

In some embodiments, the pixel unit PU further includes common electrodes CE1 and CE2. The common electrodes CE1 and CE2 can extend along the extending direction of the pixel electrodes PE1, PE2 and PE3 through a plurality of data lines DL1, DL2 and DL3. Please refer to FIG. 1A. In the top view, the common electrode CE1 may be located between the pixel electrode PE1 and the pixel electrode PE2, and the common electrode CE2 may be located between the pixel electrode PE2 and the pixel electrode PE3. In some embodiments, the common electrode CE1 can overlap the gap GP1 between its adjacent pixel electrodes PE1 and PE2, and the common electrode CE2 can overlap the gap GP2 between its adjacent pixel electrodes PE2 and PE3, thereby The electric fields of adjacent sub-pixels SP are shielded to prevent the electric fields of adjacent sub-pixels SP from interfering with each other. In some embodiments, the common electrodes CE1 and CE2 may belong to the same film layer as the gates G1, G2, G3 of the switching elements T1, T2, and T3 or the scan lines SL, thereby blocking light from the underside of the substrate 110.

In some embodiments, the display device 10 further includes a transparent electrode TE1. The transparent electrode TE1 is disposed on the substrate 110. The transparent electrode TE1 overlaps the pixel electrodes PE1, PE2, and PE3, and the flat layer I2 can be located between the transparent electrode TE1 and the pixel electrode. Between PE1, PE2, and PE3. The transparent electrode TE1 may be located between the pixel electrodes PE1, PE2, PE3 and the data lines DL1, DL2, DL3 to avoid or reduce the coupling phenomenon between the pixel electrodes PE1, PE2, PE3 and the data lines DL1, DL2, DL3. In some embodiments, the transparent electrode TE1 can be a surface electrode and has an opening O4, the passivation layer I1 and the flat layer I2 have an opening O1, and the connection lines CL1, CL2, and CL3 can electrically connect the pixels through the opening O1 and the opening O4 respectively. Electrodes PE1, PE2, PE3. In some embodiments, the orthographic projection of the opening O1 on the substrate 110 completely overlaps the orthographic projection of the opening O4 on the substrate 110 .

In some embodiments, the display device 10 further includes a substrate 120 , and the substrate 120 is opposite to the substrate 110 . In some embodiments, the display device 10 further includes a display medium layer MD. The display medium layer MD may be located between the substrate 110 and the substrate 120. Through the electric field formed by each sub-pixel SP, the display medium layer MD can be The medium switches, for example, between optical isotropy and optical anisotropy so that the display medium functions as a light valve. The display medium in the display medium layer MD is, for example, liquid crystal molecules.

In some embodiments, the display device 10 further includes a plurality of color filter structures CF, the plurality of color filter structures CF are disposed on the substrate 120, the plurality of color filter structures CF are located between the substrate 120 and the substrate 110, and multiple color filter structures CF are disposed on the substrate 120. A color filter structure CF may be located between the substrate 120 and the display medium layer MD. In some embodiments, multiple color filter structures CF can be set corresponding to sub-pixels SP1, SP2, and SP3 respectively, so that the color filter structure CF can individually adjust the color presented by each pixel unit PU. For example, the color filter structure CF may include a red filter pattern CFr, a green filter pattern CFg, and a blue filter pattern CFb, and the red filter pattern CFr, the green filter pattern CFg, and the blue filter pattern CFb may Pixel electrodes PE1, PE2, and PE3 respectively correspond to sub-pixels SP1, SP2, and SP3. In some embodiments, the arrangement direction of the red filter pattern CFr, the green filter pattern CFg and the blue filter pattern CFb is parallel to the extension direction of the bending axis BA of the substrate 110 to avoid the red filter pattern CFr from interfacing with the pixel electrode. Due to the bending of the display device 10, misalignment occurs between PE1, between the green filter pattern CFg and the pixel electrode PE2, and between the blue filter pattern CFb and the pixel electrode PE3, resulting in defects in the display image, thereby improving the display device. 10 Display quality when bent. In some embodiments, the display device 10 further includes a plurality of light-shielding structures BM, and the plurality of light-shielding structures BM can be respectively located between the plurality of color filter structures CF to avoid light leakage or light mixing between the sub-pixels SP. phenomenon.

In some embodiments, the display device 10 further includes a transparent electrode TE2. The transparent electrode TE2 may be disposed on the substrate 120, and the transparent electrode TE2 may be a surface electrode. In some embodiments, the operating potential of the transparent electrode TE2 may be the same as the operating potential of the transparent electrode TE1. In some embodiments, the display device 10 further includes a flat layer I3. The flat layer I3 may be located between the transparent electrode TE2 and the display medium layer MD to prevent the transparent electrode TE2 from interfacing with the pixel electrodes PE1, PE2, PE3 or other conductive film layers. A short circuit occurs between them. In some embodiments, the flat layer I3 may be located between the pixel electrode PE1 and the display medium layer MD to prevent a short circuit between the pixel electrode PE1 and the transparent electrode TE2 or other conductive film layers. In some embodiments, the flat layer I3 can be further patterned to improve the display medium efficiency of the display medium layer MD, such as liquid crystal efficiency, thereby improving the display quality of the display device 10 . In some embodiments, the display device 10 further includes an optical layer OC, which may be located between the color filter structure CF and the light-shielding structure BM and the transparent electrode TE2. By providing the optical layer OC, the flat layer I2 and the flat layer I3, the cell gap CG of the display device 10 can be shortened. In some embodiments, the substrate gap CG of the display device 10 may be no greater than 2.0 μm.

In some embodiments, the display device 10 further includes a plurality of spacers PS. The spacers PS may be disposed on the substrate 120 and protrude from the substrate 120 toward the substrate 110 to maintain a stable substrate between the substrate 110 and the substrate 120 . Gap CG. The orthographic projection of the spacer PS on the substrate 120 can completely overlap the orthographic projection of the light shielding structure BM on the substrate 120 . The shape of the gap PS is not particularly limited and can be adjusted as necessary. For example, the shape of the spacer PS (eg, the shape of the orthographic projection on the substrate 120 ) may be approximately circular or rectangular.

In some embodiments, each of the pixel electrodes PE1, PE2, and PE3 may include multiple slit groups SS, and the gaps PG between the multiple slit groups SS overlap the data lines DL. In other words, the orthographic projections of the plurality of slit groups SS on the substrate 110 can be roughly separated by the orthographic projections of the data lines DL on the substrate 110 . For example, each of the pixel electrodes PE1, PE2, and PE3 may include three sets of slit sets SS, and the orthographic projections of the three sets of slit sets SS on the substrate 110 may be separated by the orthographic projections of the data lines DL2 and DL3 on the substrate 110. In some embodiments, each slit group SS may include multiple slits ST, and the multiple slits ST may extend outwardly from the center of the connection lines CL1, CL2, CL3 or the extension lines EL1, EL2, EL3. For example, multiple slits ST can extend toward directions Q1, Q2, Q3, Q4 with connection lines CL1, CL2, CL3 or extension lines EL1, EL2, EL3 as centers, so that each slit group SS can form a four-alignment Domain, as shown by the arrow symbol AR in the figure, where each arrow symbol AR can represent one of the four alignment domains, and the liquid crystal tilting direction of each alignment domain can be determined by the extension direction of the multiple slits ST controlled. In this way, each sub-pixel SP1, SP2, and SP3 may include three four-alignment areas separated by data lines DL2 and DL3. Therefore, when the liquid crystal molecules in the display medium layer MD are driven by the pixel electrodes PE1, PE2, PE3 and the transparent electrode TE2, each pixel unit PU can present a multi-domain alignment arrangement, so that the display device 10 can achieve a wide viewing angle display effect. .

In the following, other embodiments of the present invention will be continued to be described using FIGS. 2 to 4 , and the component numbers and related content of the embodiment of FIGS. 1A to 1B will be used, where the same numbers are used to represent the same or similar elements, and Explanations of the same technical content are omitted. For descriptions of omitted parts, reference may be made to the embodiments of FIGS. 1A to 1B , which will not be repeated in the following description.

FIG. 2 is a partial top view of the display device 20 according to an embodiment of the present invention. The display device 20 includes: a substrate 110, scan lines SL, data lines DL1, DL2, DL3, switching elements T1, T2, T3, pixel electrodes PEa1, PE2, PEa3, connection lines CL1, CL2, CL3, and extension lines EL1, EL2 , EL3, common electrodes CE1, CE2 and light-shielding structure BM.

Compared with the display device 10 shown in FIGS. 1A and 1B , the display device 20 shown in FIG. 2 is mainly different in that the pixel electrode PEa1 of the display device 20 may include two sets of slit groups SS1 and SS2. And the orthographic projections of the slit groups SS1 and SS2 on the substrate 110 can be separated by the orthographic projection of the data line DL2 on the substrate 110; the pixel electrode PEa3 can include two groups of slit groups SS3 and SS4, and two groups of slit groups SS3 and SS4. The orthographic projection on the substrate 110 may be separated by the orthographic projection of the data line DL3 on the substrate 110 . In detail, the slits ST of the slit group SS2 may extend toward the directions Q1, Q2, Q3, and Q4 with the data line DL3 as the center, and the slits ST of the slit group SS3 may extend with the data line DL2 as the center toward the directions Q1, Q2, Q3, and Q4. Q2, Q3, Q4 extend. In this way, liquid crystal convergence or discrete areas with poor liquid crystal efficiency can be reduced, thereby improving the light transmittance and display effect of the display device 20 .

FIG. 3 is a partial top view of the display device 30 according to an embodiment of the present invention. The display device 30 includes: a substrate 110, scan lines SL, data lines DL1, DL2, DL3, switching elements T1, T2, T3, pixel electrodes PEb1, PEb2, PEb3, connection lines CL1, CL2, CL3, and common electrodes CE3~CE7 , red filter pattern CFr, green filter pattern CFg, blue filter pattern CFb and light-shielding structure BM.

Compared with the display device 10 shown in FIGS. 1A to 1B , the display device 30 shown in FIG. 3 is mainly different in that: the scan line SL of the display device 30 is located on any two adjacent pictures in the pixel unit PU. Between the pixel electrodes PEb1 and PEb2 or between the pixel electrodes PEb1 and PEb3. For example, in this embodiment, the scan line SL is located between the pixel electrodes PEb1 and PEb3, and the pixel electrode PEb1 is located between the scan line SL and the pixel electrode PEb2.

In this embodiment, the extension direction of the connection line CL1 of the sub-pixel SP1 with respect to the switching element T1 (that is, the direction from the switching element T1 to the pixel electrode PEb1) can be the same as the extension direction of the connection line CL2 of the sub-pixel SP2 with respect to the switch. The extension direction of the element T2 (that is, the direction from the switching element T2 to the pixel electrode PEb2) is the same, and the extension direction of the connection line CL1 of the sub-pixel SP1 with respect to the switching element T1 can be opposite to the connection line CL3 of the sub-pixel SP3 The extending direction of the switching element T3 (that is, the direction from the switching element T3 to the pixel electrode PEb3) is different.

In some embodiments, each of the pixel electrodes PEb1, PEb2, and PEb3 may include a set of slit groups SSb, and the plurality of slits ST of the slit group SSb may be roughly scanned from the pixel electrodes PEb1, PEb2, and PEb3. The center line CA parallel to the line SL extends in the directions Q1, Q2, Q3, and Q4, so that each sub-pixel SP1, SP2, and SP3 can form a four-alignment area, as shown by the arrow symbols in the figure, and these four alignment areas can be roughly The intersection of the extension line of the connecting line CL2 and the center line CA is the center. In this way, it is possible to avoid dark areas with poor efficiency when the liquid crystal is tilted, thereby improving the light transmittance of the display device 30 and the quality of the displayed images.

In some embodiments, in each pixel unit PU, the polarity of the pixel electrode PEb1, pixel electrode PEb2 or pixel electrode PEb3 of one of the plurality of sub-pixels SP1, SP2, SP3 is different from that of the other sub-pixels. The polarity of the pixel electrode PEb1, pixel electrode PEb2 or pixel electrode PEb3 of at least one of SP1, SP2 and SP3. For example, the polarity of the pixel electrode PEb2 is different from the polarity of the pixel electrode PEb1 to prevent the display device 30 from producing up-and-down shaking patterns. Therefore, when the pixel electrode PEb1 is electrically connected to the data line DL1, the pixel electrode PEb2 is preferably electrically connected to the data line DL2. In other words, the connection line CL2 is preferably electrically connected to the switching element T2 and the pixel electrode PEb2, but non-electrically connected to the switching element T2 and the pixel electrode PEb3.

FIG. 4 is a partial cross-sectional view of a display device 40 according to an embodiment of the present invention. The display device 40 includes: substrates 110 and 120, switching element T1, connection line CL1, pixel electrode PE1, transparent electrodes TE1, TE2, passivation layer I1, flat layer I2, flat layer I3, color filter structure CF, light shielding structure BM And the gap PS.

Compared with the display device 10 shown in FIGS. 1A to 1B , the display device 40 shown in FIG. 4 is mainly different in that: the flat layer I2 of the display device 40 is located between the switching element T1 and the transparent electrode TE1, and The passivation layer I1 is located between the transparent electrode TE1 and the pixel electrode PE1. In this embodiment, the flat layer I2 can increase the distance between the transparent electrode TE1 and the conductive layer forming the source S1 and the drain D1 of the switching element T1 , thereby reducing the resistive capacitive load (RC loading) of the display device 40 .

To sum up, by making the extension direction of the pixel electrode intersect with the bending axis of the substrate, the display device of the present invention can avoid image defects when the display device is bent, thereby improving the display quality of the display device. In addition, the display device of the present invention can shorten the substrate gap of the display device by arranging the color filter structure on the opposite substrate and further providing an optical layer, a passivation layer and/or a flat layer, thereby improving the response speed of the display device.

Although the present invention has been disclosed above through embodiments, they are not intended to limit the present invention. Anyone with ordinary knowledge in the technical field may make some modifications and modifications without departing from the spirit and scope of the present invention. Therefore, The protection scope of the present invention shall be determined by the appended patent application scope.

10, 20, 30, 40: Display device 110, 120:Substrate A-A’: hatch line AR: arrow symbol BA: bent axis BM: light-shielding structure CA: center line CE1~CE7: common electrode CF: color filter structure CFb: blue filter pattern CFg: green filter pattern CFr: red filter pattern CG: substrate gap CH1, CH2, CH3: semiconductor layer CL, CL1, CL2, CL3: connecting lines D, D1, D2, D3: drain DL, DL1, DL2, DL3: data line EL, EL1, EL2, EL3: extension line G1, G2, G3: gate GI: gate insulation layer GP1, GP2: Gap I1: Passivation layer I2: flat layer I3: Flat layer MD: display medium layer O1, O2, O3, O4: opening OC: optical layer PE, PE1, PE2, PE3, PEa1, PEa3, PEb1, PEb2, PEb3: pixel electrode PG: gap PS: gap PU: pixel unit S1, S2, S3: source SL: scan line SP, SP1, SP2, SP3: sub-pixel SS, SS1, SS2, SS3, SS4, SSb: slit group ST: slit T, T1, T2, T3: switching elements TE1, TE2: transparent electrode Q1, Q2, Q3, Q4, X, Y: direction

FIG. 1A is a partial top view of a display device 10 according to an embodiment of the present invention. Figure 1B is a schematic cross-sectional view taken along section line A-A' in Figure 1A. FIG. 2 is a partial top view of the display device 20 according to an embodiment of the present invention. FIG. 3 is a partial top view of the display device 30 according to an embodiment of the present invention. FIG. 4 is a partial cross-sectional view of a display device 40 according to an embodiment of the present invention.

10:Display device

110:Substrate

A-A’: hatch line

AR: arrow symbol

BA: bent axis

BM: light-shielding structure

CE1, CE2: common electrode

CF: color filter structure

CFb: blue filter pattern

CFg: green filter pattern

CFr: red filter pattern

CH1, CH2, CH3: semiconductor layer

CL, CL1, CL2, CL3: connecting lines

D,D1,D2,D3: drain

DL, DL1, DL2, DL3: data line

EL, EL1, EL2, EL3: extension line

G1, G2, G3: gate

GP1, GP2: gap

O1,O2,O3: opening

PE, PE1, PE2, PE3: pixel electrode

PG: gap

PU: pixel unit

S1, S2, S3: source

SL: scan line

SP, SP1, SP2, SP3: sub-pixel

SS: slit group

ST: slit

T, T1, T2, T3: switching elements

Q1,Q2,Q3,Q4,X,Y: direction

Claims (17)

A display device including: a first substrate having a bending axis; and A plurality of pixel units are provided on the first substrate, wherein each pixel unit includes: scan line; a plurality of data lines whose extension directions intersect with the scan lines; and A plurality of sub-pixels are electrically connected to the scan lines and are electrically connected to the plurality of data lines respectively, wherein each of the sub-pixels includes: A switching element electrically connected to the scan line and the data line; A pixel electrode whose extension direction intersects the bending axis and extends through the plurality of data lines; and A connecting line electrically connects the drain electrode of the switching element and the pixel electrode, The length of the connection line of the first sub-pixel among the plurality of sub-pixels is greater than the length of the connection line of at least one of the remaining sub-pixels. The display device of claim 1, wherein the scan line is located on one side of the pixel unit. The display device according to claim 2, wherein the lengths of the connection lines of the plurality of sub-pixels increase along an extension direction of the scan line. The display device of claim 2, wherein the plurality of sub-pixels respectively include a plurality of groups of four-alignment domains (domains), and the plurality of data lines separate the plurality of groups of four-alignment domains. The display device according to claim 1, wherein the scan line is located between any two adjacent pixel electrodes in the pixel unit. The display device of claim 5, wherein the connecting lines of the plurality of sub-pixels extend in different directions. The display device of claim 5, wherein each of the plurality of sub-pixels includes a set of four alignment areas. The display device according to claim 1, wherein each of the sub-pixels further includes a first transparent electrode, which is disposed on the first substrate and overlaps the pixel electrode. The display device according to claim 8, further comprising a flat layer located between the first transparent electrode and the pixel electrode. The display device of claim 9, wherein the first transparent electrode has a first opening, the flat layer has a second opening, and the connecting line electrically passes through the first opening and the second opening. Connect the pixel electrode. The display device of claim 1, further comprising a second substrate and a color filter structure disposed on the second substrate, wherein the second substrate is opposite to the first substrate, and the color filter structure Located between the first substrate and the second substrate. The display device according to claim 11, further comprising a second transparent electrode disposed on the second substrate and overlapping the color filter structure. The display device according to claim 1, wherein each of the pixel units further includes at least one extension line, the connection line connecting the second sub-pixel among the plurality of sub-pixels, and the connected connection line The line and the extension line extend through the pixel electrodes of the plurality of sub-pixels. The display device according to claim 1, wherein each of the pixel units further includes a plurality of common electrodes, respectively extending through the plurality of data lines along the extension direction of the pixel electrode. The display device of claim 14, wherein the plurality of common electrodes respectively overlap a gap between any two adjacent pixel electrodes. The display device according to claim 14, wherein the plurality of common electrodes and the gate of the switching element belong to the same film layer. The display device of claim 1, wherein in each of the pixel units, the polarity of the pixel electrode of one of the plurality of sub-pixels is different from at least one of the remaining sub-pixels. The polarity of the pixel electrode.