Display device

Abstract

The present invention provides a display device comprising: a sub-pixel electrode having at least one pixel slit, in which the width at a center line of the sub-pixel electrode is greater than the width at an outline of the sub-pixel electrode, for each domain; and a common electrode having at least one common slit, in which the width at a center line of the common electrode is greater than the width at an outline of the common electrode, for each domain. The at least one pixel slit and the at least one common slit between the sub-pixel electrode and the common electrode are arranged offset from each other.

Description

display device

[0001] One or more embodiments of the present disclosure relate to a display device for improving a viewing angle.

[0002] A display device is a device that displays visual and three-dimensional image information, and examples thereof include a liquid crystal display device (LCD), an electroluminescence display device (ELD), a field emission display device (FED), a plasma display panel (hereinafter referred to as “PDP”), a thin film liquid crystal display (TFT-LCD), and a flexible display device.

[0003] Liquid crystal display devices (LCDs) are one of the most widely used flat panel display devices today. They consist of two substrates each having electrodes positioned between two glass plates bonded together with a sealant, and liquid crystals positioned between the two substrates. Liquid crystal display devices display images by applying voltage to the electrodes of the two substrates to generate an electric field, which then determines the orientation of the liquid crystal molecules and controls the polarization of incident light.

[0004] Among liquid crystal display devices, a vertical alignment (VA) mode liquid crystal display device is a liquid crystal display device in which the long axis of liquid crystal molecules is vertically aligned between two substrates when no electric field is applied.

[0005] A vertical alignment mode liquid crystal display device achieves a wide viewing angle by including multiple domains with different alignment directions of liquid crystals in one pixel.

[0006] Conventional vertical alignment mode liquid crystal display devices have problems of reduced aperture ratio due to wires connected to multiple domains, reduced transmittance due to reduced aperture ratio, and loss of brightness because one pixel is implemented through multiple domains.

[0007] Conventional vertical alignment mode liquid crystal display devices have problems of wash-out, brightness reduction, and image quality deterioration when the rotation direction of liquid crystals within multiple domains goes beyond a certain range.

[0008] One aspect provides a display device including a subpixel electrode having at least one pixel slit, the width of which at a center line of the subpixel electrode is wider than the width at an outer line of the subpixel electrode, for each domain.

[0009] Another aspect provides a display device including a sub-pixel electrode having at least one pixel slit whose width at a center line of the sub-pixel electrode is wider than a width at an outer line of the sub-pixel electrode for each domain, and a common electrode having at least one common slit whose width at a center line of the common electrode is wider than a width at an outer line of the common electrode for each domain, wherein at least one pixel slit and at least one common slit are arranged to be misaligned between the sub-pixel electrode and the common electrode.

[0010] A display device according to one aspect includes: a common electrode; a sub-pixel electrode spaced apart from the common electrode and divided into a plurality of domains; and a liquid crystal unit provided between the common electrode and the sub-pixel electrode. The sub-pixel electrode of the display device according to one aspect includes at least one pixel slit, the width of which at a center line of the sub-pixel electrode is wider than the width of the outer line of the sub-pixel electrode for each of the plurality of domains. Among the plurality of domains of the display device according to one aspect, adjacent domains have an arrangement of at least one pixel slit that is symmetrical to each other.

[0011] The sub-pixel electrode of the display device according to one aspect may be provided as a plurality of split pixel electrodes separated by at least one pixel slit for each domain. Among the plurality of domains of the display device according to one aspect, adjacent domains have arrangements of the plurality of split pixel electrodes that are symmetrical to each other.

[0012] A plurality of split pixel electrodes of a display device according to one aspect have a width of a first side adjacent to the center line of the sub-pixel electrode for each domain narrower than a width of a second side adjacent to the outer line of the sub-pixel electrode.

[0013] The reference slope of at least one pixel slit in each domain of the display device according to one aspect is the same as the slope of the center line of each of the plurality of split pixel electrodes. The center line of each of the plurality of split pixel electrodes of the display device according to one aspect is a line connecting the center of the first side of the split pixel electrode and the center of the second side of the split pixel electrode.

[0014] A reference slope of at least one pixel slit of a display device according to one aspect is a slope of a centerline of the at least one pixel slit. The centerline of at least one pixel slit of the display device according to one aspect is a line connecting a center of a width of at least one pixel slit at a centerline of a subpixel electrode and a center of a width of at least one pixel slit at an outer line of the subpixel electrode. A plurality of split pixel electrodes of the display device according to one aspect are spaced apart from a position of a centerline of at least one pixel slit by a preset distance.

[0015] The first distances between the first sides of the plurality of split pixel electrodes of the display device according to one side are equal to each other. The second distances between the second sides of the plurality of split pixel electrodes of the display device according to one side are equal to each other. The first distance of the display device according to one side is a distance longer than the second distance.

[0016] The strength of the electric field between the plurality of split pixel electrodes and the common electrode for each domain of the display device according to one aspect may increase as one moves from the first side to the second side of each split pixel electrode.

[0017] A common electrode of a display device according to one aspect is divided into a plurality of domains, and each domain includes at least one common slit, the width of which at a center line of the common electrode is wider than the width of the outer line of the common electrode. Among the plurality of domains of the display device according to one aspect, adjacent domains have at least one common slit whose arrangement is symmetrical to each other.

[0018] The common electrode of the display device according to one aspect may be provided as a plurality of divided common electrodes separated by at least one common slit for each domain. Among the plurality of domains of the display device according to one aspect, adjacent domains have arrangements of the plurality of divided common electrodes that are symmetrical to each other.

[0019] Each of the plurality of split common electrodes of the display device according to one aspect has a first side adjacent to the center line of the common electrode, for each domain, a width narrower than a second side adjacent to the outer line of the common electrode.

[0020] The reference slope of at least one common slit in each domain of the display device according to one aspect is the same as the slope of the center line of each of the plurality of split common electrodes. The center line of each of the plurality of split common electrodes of the display device according to one aspect is a line connecting the center of the first side of the split common electrode and the center of the second side of the split common electrode.

[0021] The reference slope of at least one common slit of the display device according to one aspect is the slope of the centerline of the at least one common slit. The centerline of at least one common slit of the display device according to one aspect is a line connecting the center of the width of the at least one common slit at the centerline of the common electrode and the center of the width of the at least one common slit at the outer line of the common electrode.

[0022] A plurality of split common electrodes of a display device according to one aspect may be spaced apart from the center line of at least one common slit by a preset distance.

[0023] The first distances between the first sides of the plurality of split common electrodes of the display device according to one side are equal to each other. The second distances between the second sides of the plurality of split common electrodes of the display device according to one side are equal to each other. The first distance of the display device according to one side is a distance longer than the second distance.

[0024] The position of at least one common slit of the display device according to one aspect is a position corresponding to a surface area of ​​at least one split pixel electrode among a plurality of split pixel electrodes.

[0025] The position of at least one pixel slit of the display device according to one aspect is a position corresponding to a surface area of ​​at least one split common electrode among a plurality of split common electrodes.

[0026] The distance between the plurality of split common electrodes of the display device according to one aspect may become narrower as one moves from the center line of the common electrode to the outer line of the common electrode. The distance between the plurality of split pixel electrodes of the display device according to one aspect may become narrower as one moves from the center line of the sub-pixel electrode to the outer line of the sub-pixel electrode.

[0027] The area of ​​a surface where a plurality of split pixel electrodes and a plurality of split common electrodes of a display device face each other according to one aspect may increase as one moves from the center line of the sub-pixel electrode to the outer line of the sub-pixel electrode.

[0028] An electric field between a plurality of split pixel electrodes and a plurality of split common electrodes of a display device according to one aspect may increase in intensity as it moves from the center line of the sub-pixel electrode to the outer line of the sub-pixel electrode.

[0029] The present invention can allow liquid crystals to be oriented at various rotation angles by making the distance between split pixel electrodes divided by at least one pixel slit different. In other words, the present invention can allow liquid crystals to be oriented at rotation angles corresponding to eight or more domains in four domains.

[0030] The present invention can obtain a rotation angle of the liquid crystal in the form of a gradation in the same direction while maintaining the transmittance corresponding to the four domains, thereby providing a uniform viewing angle in a wide direction compared to the existing four domains and improving the image display quality of the display device.

[0031] Accordingly, the quality and marketability of display devices can be improved, user satisfaction can be increased, and the competitiveness of display devices can be secured.

[0032] Embodiments of the present disclosure will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings.

[0033] Figure 1 is an external view of a display device according to one embodiment.

[0034] FIG. 2 is an exploded perspective view of a display device provided with a direct backlight unit according to one embodiment.

[0035] FIG. 3 is an exploded perspective view of a display device provided with an edge-type backlight unit according to one embodiment.

[0036] Figure 4 is a detailed configuration diagram of a display panel provided in a display device according to one embodiment.

[0037] FIG. 5 is an exemplary diagram of a pixel electrode provided on a display panel of a display device according to one embodiment.

[0038] FIG. 6 is an exemplary diagram of a sub-pixel electrode provided on a display panel of a display device according to one embodiment.

[0039] FIGS. 7 and 8 are exemplary diagrams of sub-pixel electrodes of a first domain provided on a display panel of a display device according to one embodiment.

[0040] FIG. 9 is an exemplary diagram of a split pixel electrode provided on a display panel of a display device according to one embodiment.

[0041] FIG. 10 is an exemplary diagram showing the arrangement of split pixel electrodes of a first domain provided on a display panel of a display device according to one embodiment.

[0042] FIGS. 11 and 12 are exemplary diagrams of electric fields between a common electrode and a sub-pixel electrode provided on a display panel of a display device according to one embodiment.

[0043] FIG. 13 is an exemplary diagram of the light output of a sub-pixel provided on a display panel of a display device according to one embodiment.

[0044] FIGS. 14 and 15 are exemplary diagrams of a liquid crystal arrangement between a common electrode and a sub-pixel electrode provided on a display panel of a display device according to one embodiment.

[0045] Fig. 16 is an example of the liquid crystal arrangement at X1-X2 of Fig. 13.

[0046] Fig. 17 is a detailed configuration diagram of a display panel provided in a display device according to another embodiment.

[0047] FIG. 18 and FIG. 19 are exemplary views of a common electrode of a first electrode portion provided on a display panel of a display device according to another embodiment.

[0048] FIG. 20 is an exemplary diagram of a common electrode of a first domain provided on a display panel of a display device according to another embodiment.

[0049] FIG. 21 and FIG. 22 are exemplary diagrams of sub-pixel electrodes provided on a display panel of a display device according to another embodiment.

[0050] FIG. 23 is an exemplary diagram of a sub-pixel electrode of a first domain provided on a display panel of a display device according to another embodiment.

[0051] FIG. 24 and FIG. 25 are exemplary diagrams showing the arrangement of common electrodes and sub-pixel electrodes provided on a display panel of a display device according to another embodiment.

[0052] FIGS. 26 and 27 are exemplary diagrams of electric fields between a common electrode and a sub-pixel electrode provided on a display panel of a display device according to another embodiment.

[0053] FIG. 28 is an exemplary diagram of the light output of a sub-pixel provided in a display panel of a display device according to another embodiment.

[0054] FIGS. 29 and 30 are exemplary views of a liquid crystal arrangement between a common electrode and a sub-pixel electrode provided on a display panel of a display device according to another embodiment.

[0055] Figure 31 is an example of the liquid crystal arrangement at X1-X2 of Figure 28.

[0056] It should be understood that the various embodiments of the present disclosure and the terminology used therein are not intended to limit the technical features described in the present disclosure to specific embodiments, but rather to encompass various modifications, equivalents, or alternatives of the embodiments.

[0057] In connection with the description of the drawings, similar reference numerals may be used for similar or related components.

[0058] The singular form of a noun corresponding to an item may include one or more of said items, unless the relevant context clearly indicates otherwise.

[0059] In the detailed description, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" may include any one of the items listed together in that phrase, or all possible combinations thereof.

[0060] The term "and / or" includes any combination of a plurality of related described elements or any one of a plurality of related described elements.

[0061] Terms such as "first," "second," or "first" or "second" may be used simply to distinguish one component from another and do not qualify the components in any other respect (e.g., importance or order).

[0062] When a component (e.g., a first component) is referred to as being "coupled" or "connected" to another component (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0063] The terms "include" or "have" are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in this document, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0064] When a component is said to be “connected,” “coupled,” “supported,” or “in contact with” another component, this includes not only cases where the components are directly connected, coupled, supported, or in contact, but also cases where the components are indirectly connected, coupled, supported, or in contact through a third component.

[0065] When we say that a component is "on" another component, this includes not only cases where the component is in contact with the other component, but also cases where there is another component between the two components.

[0066] Hereinafter, the present invention will be described in detail with reference to the attached drawings.

[0067] Figure 1 is an external view of a display device according to one embodiment.

[0068] A display device (100) is a device that displays an image received from an external device or displays a stored image.

[0069] The display device (100) may be a television, a billboard, a guide sign, or a display unit of a terminal such as a smart phone, tablet, or laptop, depending on its function, or may be a display unit of various electrical devices.

[0070] The display device (100) may include a body (100a) that forms the exterior of the display device (100).

[0071] The display device (100) may further include a bezel (100b) provided on the edge of the main body (100a). The display device (100) may be protected from external force due to the bezel (100b).

[0072] The display device (100) may also be implemented in a bezel-less form.

[0073] The display device (100) may further include a stand (not shown) that is provided at the lower portion of the main body (100a) to support the main body (100a) in accordance with the installation environment and function, or may further include a bracket (not shown) that is provided at the rear portion of the main body (100a) to allow the main body (100a) to be mounted on a wall or the like.

[0074] The display device (100) may be a liquid crystal display device that displays an image using light from a backlight unit.

[0075] The backlight unit of the display device (100) can be classified into a direct type backlight unit and an edge type backlight unit depending on the arrangement position of the backlight.

[0076] The structure of this display device (100) is described with reference to FIGS. 2 and 3.

[0077] Figure 2 is a structural diagram of a display device provided with a direct-type backlight unit according to one embodiment.

[0078] For the convenience of the following explanation, the direction in which an image is displayed on the display device (100) is described as the front, and the direction opposite to the front direction of the display device (100) is described as the rear.

[0079] As illustrated in FIG. 2, the display device (100) may further include a case (100c) that is positioned at the rear of the main body (100a) and is combined with a bezel (100b) and forms the exterior of the rear of the display device (100).

[0080] The display device (100) includes a backlight unit (110a) and a display panel (120) placed between a bezel (100b) and a case (100c).

[0081] Additionally, the display device (100) may further include a touch panel (not shown) provided in front of the display panel (120).

[0082] The backlight unit (110a) is placed between the display panel (120) and the case (100c), is placed at a certain distance from the display panel (120), and emits light toward the display panel (120).

[0083] This backlight unit (110a) includes a light emitting portion (111), a reflective panel (112), a diffusion panel (113), and an optical sheet (114).

[0084] The light emitting portion (111) is positioned adjacent to the case (100c) and emits light toward the display panel (120). The light emitting portion (111) may be positioned between the case (100c) and the reflective panel (112).

[0085] This light emitting unit (111) may include a light source of any one type among lamps such as a cold cathode fluorescence lamp (CCFL), an external electrode fluorescence lamp (EEFL), and a light emitting diode, for example.

[0086] A reflective panel (112) can be placed between the light emitting portion (111) and the case (100c).

[0087] Additionally, the reflective panel (112) can be placed on the same surface as the light-emitting portion (111).

[0088] The reflective panel (112) may be provided with a plurality of through holes into which a plurality of light sources of the light emitting portion (111) are inserted. That is, a plurality of light sources of the light emitting portion (111) may be inserted and arranged in the through holes of the reflective panel (111), thereby allowing the plurality of light sources to be exposed to the outside.

[0089] The reflective panel (112) reflects some of the light emitted from the light emitting unit (111) toward the display panel (120) when the light is incident thereon. Here, some of the light emitted from the light emitting unit (111) may be light emitted toward the case (100c) rather than toward the display panel and / or light reflected from the diffusion panel (113).

[0090] The reflective panel (112) may be manufactured using a synthetic resin such as polycarbonate (PC) or polyethylene terephthalate (PET), and may also be manufactured using various metal materials.

[0091] The diffusion panel (113) is a translucent panel that is placed between the display panel (120) and the light emitting unit (111) of the backlight unit and diffuses the light emitted from the light emitting unit (111) along the surface, thereby making the color and brightness of the entire screen of the display panel (120) appear uniform, thereby improving the brightness of the light emitted from the light emitting unit (111).

[0092] The backlight unit (110a) may further include one or at least two optical sheets (114).

[0093] The optical sheet (114) improves optical characteristics by uniformly adjusting the brightness of incident light and by using methods such as diffusing and / or concentrating high-brightness light.

[0094] At least one of the two optical sheets (114) selectively transmits light according to its wavelength, and reflects light having a different wavelength from the selected light toward the backlight unit, thereby increasing the light transmission efficiency. This optical sheet may include a prism sheet having a prism formed therein.

[0095] At least one of the two optical sheets (114) can polarize light by preventing light other than light of a specific wavelength from being transmitted.

[0096] Such optical sheets may include reflective polarizing sheets (e.g., DBEF: Dual Brightness Enhancement Film) with a multilayer coating of birefringence.

[0097] The display panel (120) is a panel that is placed within a case (100c) and changes electrical information into image information by utilizing changes in liquid crystal transmittance according to an applied voltage. The display panel (120) includes a liquid crystal panel (120a), a first polarizing panel (120b), and a second polarizing panel (120c).

[0098] The liquid crystal panel (120a) includes liquid crystals, and changes the arrangement of the liquid crystals to control the transmittance of transmitted light, thereby allowing color to be formed for each pixel.

[0099] An image can be implemented on the display device (100) by a combination of colors for each pixel formed on the liquid crystal panel (120a).

[0100] The liquid crystal panel (120a) includes a substrate portion (121), a color filter portion (122), a first electrode portion (123), a second electrode portion (124), and a liquid crystal portion (125).

[0101] The substrate portion (121) may include first and second substrates (121a, 121b) attached with a sealant.

[0102] A color filter unit (122), a first electrode unit (123), a second electrode unit (124), and a liquid crystal unit (125) can be provided between the first and second substrates (121a, 121b).

[0103] The first and second substrates (121a, 121b) may be glass substrates.

[0104] Here, the first substrate (121a), the second electrode portion (124), the liquid crystal portion (125), the first electrode portion (123), the color filter portion (122), and the second substrate (121b) can be sequentially laminated and formed in this order. However, the lamination order is not limited to that shown in Fig. 2.

[0105] The configuration of the liquid crystal panel (120a) will be described in detail later.

[0106] The first polarizing panel (120b) is positioned between the backlight unit (110a) and the liquid crystal panel (120a), and when non-polarized light emitted from the backlight unit (110a) is incident, only light having the first polarization axis among the incident light passes through it. Light passing through the first polarizing panel (120b) can be incident on the liquid crystal panel (120a).

[0107] The second polarizing panel (120c) is provided to face the first polarizing panel (120b) with the liquid crystal panel (120a) interposed therebetween, and has a second polarizing axis that is perpendicular to the first polarizing axis of the first polarizing panel (120b). In other words, the second polarizing panel (120c) is arranged on one surface of the liquid crystal panel (120a) and polarizes image light output from the liquid crystal panel (120a) in one direction.

[0108] The display device (100) may further include a first support member (not shown) that is positioned between the diffusion panel (113) and the light emitting unit (111) to maintain a gap between the diffusion panel (113) and the light emitting unit (111) and to fix the diffusion panel (113), and a second support member (not shown) that is positioned between the first polarizing panel (120b) and the optical sheet (114) to maintain a gap between the first polarizing panel (120b) and the optical sheet (114) and to fix the diffusion panel (113), the optical sheet (114), and the display panel (120).

[0109] FIG. 3 is a structural diagram of a display device having an edge-type backlight unit according to one embodiment.

[0110] As illustrated in FIG. 3, the display device (100) is combined with a bezel (100b) and may further include a case (100c) that is positioned at the rear of the display device (100) to form the rear appearance.

[0111] The display device (100) includes a backlight unit (110b) and a display panel (120) placed between a bezel (100b) and a case (100c).

[0112] Additionally, the display device (100) may further include a touch panel (not shown) provided in front of the display panel (120).

[0113] The backlight unit (110b) is placed between the display panel (120) and the case (100c), is placed at a certain distance from the display panel (120), and emits light toward the display panel (120).

[0114] This backlight unit (110b) includes a light emitting portion (115), a reflective panel (116), a light guide panel (117), a diffusion panel (113), and an optical sheet (114).

[0115] The light emitting unit (115) is arranged adjacent to the case (100c) and is arranged on each side of the case (100c) to emit light toward the light guide panel (117).

[0116] The reflective panel (116) is placed between the light emitting portions (115) and behind the light guide panel (117), and reflects some of the light emitted from the light emitting portions toward the light guide panel (117).

[0117] The light guide panel (117) is placed between the light emitting portions (115) and adjacent to the reflective panel (116), and when light emitted from the light emitting portions (115) is incident, it guides the incident light to the display panel (120).

[0118] The light guide panel (117) is made in a flat type by a plastic material such as polymethylmethacrylate (PMMA), which is an acrylic transparent resin that is one of the transparent materials that can transmit light, or a polycarbonate (PC) series.

[0119] These light-guiding panels (117) have excellent transparency, weather resistance, and colorability, and induce diffusion of light when transmitting light.

[0120] The diffusion panel (113) is a semitransparent panel that is placed between the display panel (120) and the light guide panel (117) of the backlight unit and diffuses the light emitted from the light guide panel (117) along the surface, thereby making the color and brightness of the entire screen of the display panel (120) appear uniform, thereby improving the brightness of the light emitted from the light emitting unit (115).

[0121] The backlight unit (110b) may further include one or at least two optical sheets (114).

[0122] The optical sheet (114) improves optical characteristics by uniformly adjusting the brightness of incident light and by using methods such as diffusing and / or concentrating high-brightness light.

[0123] One of the optical sheets (114) selectively transmits light according to its wavelength, and reflects light having a different wavelength from the selected light toward the backlight unit, thereby increasing the light transmission efficiency. This optical sheet may include a prism sheet having a prism formed therein.

[0124] Another optical sheet can polarize light by preventing light of a specific wavelength from passing through.

[0125] The display panel (120) is a panel that is placed within a case (100c) and changes electrical information into image information by utilizing changes in liquid crystal transmittance according to an applied voltage. The display panel (120) includes a liquid crystal panel (120a), a first polarizing panel (120b), and a second polarizing panel (120c).

[0126] The liquid crystal panel (120a), the first polarizing panel (120b), and the second polarizing panel (120c) of the display panel (120) of the display device equipped with an edge-type backlight unit are identical to the configuration of the liquid crystal panel (120a), the first polarizing panel (120b), and the second polarizing panel (120c) of the display panel (120) of the display device equipped with a direct-type backlight unit, and thus, a description thereof is omitted.

[0127] Figure 4 is a detailed configuration diagram of a display panel provided in a display device according to one embodiment.

[0128] The display panel (120) includes a liquid crystal panel (120a), a first polarizing panel (120b) provided on one side of the liquid crystal panel (120a), and a second polarizing panel (120c) provided on the other side of the liquid crystal panel (120a).

[0129] The liquid crystal panel (120a) includes a substrate portion (121), a color filter portion (122), a first electrode portion (123), a second electrode portion (124), and a liquid crystal portion (125) that are formed by stacking each other.

[0130] The first substrate (121a) of the substrate portion (121) can be provided adjacent to the first polarizing panel (120b).

[0131] The first and second substrates (121a, 121b) of the substrate portion (121) can support the first electrode portion (123), the second electrode portion (124) and the liquid crystal portion (125) so that the positions and states of the first electrode portion (123), the second electrode portion (124) and the liquid crystal portion (125) are maintained.

[0132] The substrate (121) may include a rigid substrate, a flexible substrate, or a rigid-flexible substrate, and may include a glass substrate.

[0133] When the substrate (121) is implemented as a flexible substrate, the display device (100) can be curved with a certain curvature.

[0134] The color filter unit (122) may be placed adjacent to the second polarizing panel (120c) or the second substrate (121b).

[0135] The color filter unit (122) can be placed adjacent to the first electrode unit (123).

[0136] The color filter unit (122) converts the incident light into red light, green light, and blue light, and emits the converted light.

[0137] The color filter unit (122) may include a red filter (R, 122a) that converts incident light into red light, a green filter (G, 122b) that converts incident light into green light, and a blue filter (B, 122c) that converts incident light into blue light.

[0138] Here, the red filter (122a), the green filter (122b), and the blue filter (122c) are arranged adjacent to each other and form one RGB filter. And one RGB filter can include one pixel.

[0139] A black matrix (not shown) may be provided at the border of the RGB filter. This black matrix acts as a light shield between the color filters, preventing color reproduction and light leakage and enhancing color contrast.

[0140] The color filter unit (122) can express a color by emitting at least one of red light emitted from a red filter (122a), green light emitted from a green filter (122b), and blue light emitted from a blue filter (122c) to the outside, or by mixing and emitting at least two of red light emitted from a red filter (122a), green light emitted from a green filter (122b), and blue light emitted from a blue filter (122c) to the outside.

[0141] The light converted in each filter of the color filter unit (122) can be emitted to the outside through the second polarizing panel (120c).

[0142] The first electrode portion (123) can be placed between the second substrate (121b) and the liquid crystal portion (125).

[0143] The first electrode part (123) can be placed between the color filter part (122) and the liquid crystal part (125).

[0144] The first electrode portion (123) may be a common electrode that does not include a common slit.

[0145] The first electrode portion (123) may be a ground electrode.

[0146] A preset reference voltage can be applied to the first electrode portion (123).

[0147] The first electrode part (123) causes an electric field to be formed between it and the second electrode part (124).

[0148] The first electrode part (123) causes the liquid crystal molecules in the liquid crystal part (125) to be aligned by the electric field formed in the liquid crystal part (125).

[0149] The second electrode portion (124) can be placed adjacent to the first substrate (121a).

[0150] The second electrode portion (124) can be placed between the first substrate (121a) and the liquid crystal portion (125).

[0151] The second electrode unit (124) includes a pixel electrode that forms an electric field using the electrical force of the first electrode unit (123).

[0152] Pixel electrodes may be provided corresponding to pixels. Pixel electrodes may be provided corresponding to RGB filters.

[0153] The pixel electrode may include a sub-pixel electrode corresponding to a red filter, a sub-pixel electrode corresponding to a green filter, and a sub-pixel electrode corresponding to a blue filter. That is, the sub-pixel electrodes of the second electrode unit (124) may be arranged to correspond to the positions of the red filter, green filter, and blue filter of the color filter unit (122), respectively.

[0154] The voltages applied to the multiple sub-pixel electrodes of the second electrode unit (124) may be the same or different from each other.

[0155] A voltage that is the same as the reference voltage or a voltage that is different from the reference voltage can be applied to the subpixel electrode.

[0156] For example, if the reference voltage is voltage a, a voltage between voltage b and voltage c can be applied to the second electrode unit. Voltage b can be less than voltage a, and voltage c can be greater than voltage a. And voltage a can be any voltage between voltage b and voltage c.

[0157] An electric field can be formed in the liquid crystal portion (125) by the difference between the voltage applied to the sub-pixel electrode and the voltage applied to the common electrode.

[0158] The size of the electric field formed in the liquid crystal portion (125) can be determined by the difference between the voltage applied to the sub-pixel electrode and the voltage applied to the common electrode.

[0159] Depending on the voltage applied to the sub-pixel electrodes, the direction of the electric field lines formed in the liquid crystal portion (125) can be determined, and an electric field may not be formed in the liquid crystal portion (125).

[0160] A plurality of sub-pixel electrodes of the second electrode unit (124) can share the first electrode unit (123).

[0161] The second electrode part (124) can be provided opposite the first electrode part (123) with the liquid crystal part (125) in between.

[0162] The plurality of sub-pixel electrodes of the second electrode unit (124) can be implemented using a thin film transistor (TFT).

[0163] The liquid crystal portion (125) is positioned between the first electrode portion (123) and the second electrode portion (124) and may include a plurality of liquid crystals. Here, the liquid crystals may be liquid crystal molecules.

[0164] Liquid crystals can be arranged arbitrarily inside the liquid crystal portion (125) when no electric field is formed within the liquid crystal portion (125). Liquid crystals can be aligned according to the direction of the electric field formed when an electric field is formed within the liquid crystal portion (125).

[0165] FIG. 5 is an exemplary diagram of a pixel electrode provided on a display panel of a display device according to one embodiment, which is described with reference to FIGS. 6 to 16.

[0166] FIG. 6 is an exemplary diagram of a sub-pixel electrode provided on a display panel of a display device according to one embodiment, FIGS. 7 and 8 are exemplary diagrams of a sub-pixel electrode of a first domain provided on a display panel of a display device according to one embodiment, FIG. 9 is an exemplary diagram of a split pixel electrode provided on a display panel of a display device according to one embodiment, and FIG. 10 is an exemplary diagram of an arrangement of a split pixel electrode of a first domain provided on a display panel of a display device according to one embodiment.

[0167] FIGS. 11 and 12 are exemplary diagrams of an electric field between a common electrode and a sub-pixel electrode provided on a display panel of a display device according to one embodiment, FIG. 13 is an exemplary diagram of light output of a sub-pixel provided on a display panel of a display device according to one embodiment, FIGS. 14 and 15 are exemplary diagrams of a liquid crystal arrangement between a common electrode and a sub-pixel electrode provided on a display panel of a display device according to one embodiment, and FIG. 16 is an exemplary diagram of a liquid crystal arrangement at X1-X2 of FIG. 13.

[0168] A display panel may contain multiple pixels.

[0169] Each pixel may include first, second, and third sub-pixels.

[0170] The first subpixel may be a subpixel corresponding to a red filter (R), the second subpixel may be a subpixel corresponding to a green filter (G), and the third subpixel may be a subpixel corresponding to a blue filter (B).

[0171] The first, second, and third sub-pixels can be provided to correspond to the sub-pixel electrodes of the second electrode unit (124), respectively.

[0172] As illustrated in FIG. 5, each of the sub-pixel electrodes of the second electrode unit (124) can be divided into a plurality of domains (D1, D2, D3, D4).

[0173] The sub-pixel electrodes for each sub-pixel can be divided into a sub-pixel electrode of the first domain (D1), a sub-pixel electrode of the second domain (D2), a sub-pixel electrode of the third domain (D3), and a sub-pixel electrode of the fourth domain (D4).

[0174] In the sub-pixel electrodes of the first, second, third, and fourth domains, one or more pixel slits (SL) may be provided.

[0175] The domain-specific sub-pixel electrode can be divided into multiple split pixel electrodes by one or more pixel slits (SL).

[0176] The slopes of the pixel slits (SL) provided in the sub-pixel electrodes for each domain may be different from each other.

[0177] The arrangement of the plurality of split pixel electrodes for each domain may vary depending on the inclination of the pixel slits (SL), and the direction of formation of the electric field for each domain may vary depending on the arrangement of the split pixel electrodes for each domain. In addition, the liquid crystals may be oriented in different directions depending on the inclination of the pixel slits for each domain.

[0178] The configuration of the pixel electrodes corresponding to the first, second, and third sub-pixels will be described in more detail.

[0179] As illustrated in FIG. 5, the sub-pixel electrode (R-PE) corresponding to the first sub-pixel can be divided into the first, second, third, and fourth domains (D1, D2, D3, and D4). That is, the sub-pixel electrode (R-PE) can be divided into the sub-pixel electrode of the first domain (D1), the sub-pixel electrode of the second domain (D2), the sub-pixel electrode of the third domain (D3), and the sub-pixel electrode of the fourth domain (D4).

[0180] Pixel slits (SL) may be provided in the domain-specific sub-pixel electrode (R-PE). The pixel slits (SL) provided in the domain-specific sub-pixel electrode (R-PE) may have different slopes for each domain.

[0181] The sub-pixel electrodes (R-PE) of the first, second, third, and fourth domains (D1, D2, D3, and D4) can be divided into a plurality of split pixel electrodes by pixel slits (SL).

[0182] The sub-pixel electrodes (R-PE) of the first, second, third, and fourth domains (D1, D2, D3, and D4) can be divided into split pixel electrodes having different slopes for each domain by the slopes of the pixel slits (SL) for each domain.

[0183] The sub-pixel electrode (G-PE) corresponding to the second sub-pixel can be divided into the first, second, third, and fourth domains (D1, D2, D3, and D4). That is, the sub-pixel electrode (G-PE) can be divided into the sub-pixel electrode of the first domain (D1), the sub-pixel electrode of the second domain (D2), the sub-pixel electrode of the third domain (D3), and the sub-pixel electrode of the fourth domain (D4).

[0184] Pixel slits (SL) may be provided in the domain-specific sub-pixel electrode (G-PE). The pixel slits (SL) provided in the domain-specific sub-pixel electrode (G-PE) may have different slopes for each domain.

[0185] The sub-pixel electrodes (G-PE) of the first, second, third, and fourth domains (D1, D2, D3, and D4) can be divided into a plurality of split pixel electrodes by pixel slits (SL).

[0186] The sub-pixel electrodes (G-PE) of the first, second, third, and fourth domains (D1, D2, D3, and D4) can be divided into split pixel electrodes having different slopes for each domain by the slopes of the pixel slits (SL) for each domain.

[0187] The sub-pixel electrode (B-PE) corresponding to the third sub-pixel can be divided into the first, second, third, and fourth domains (D1, D2, D3, and D4). That is, the sub-pixel electrode (B-PE) can be divided into the sub-pixel electrode of the first domain (D1), the sub-pixel electrode of the second domain (D2), the sub-pixel electrode of the third domain (D3), and the sub-pixel electrode of the fourth domain (D4).

[0188] Pixel slits (SL) may be provided in the domain-specific sub-pixel electrode (B-PE). The pixel slits (SL) provided in the domain-specific sub-pixel electrode (B-PE) may have different slopes for each domain.

[0189] The sub-pixel electrodes (B-PE) of the first, second, third, and fourth domains (D1, D2, D3, and D4) can be divided into a plurality of split pixel electrodes by pixel slits (SL).

[0190] The sub-pixel electrodes (B-PE) of the first, second, third, and fourth domains (D1, D2, D3, and D4) can be divided into split pixel electrodes having different slopes for each domain by the slopes of the pixel slits (SL) for each domain.

[0191] The arrangement of the domain-specific split pixel electrodes for the sub-pixel electrode (R-PE), sub-pixel electrode (G-PE), and sub-pixel electrode (B-PE) may be identical for each domain.

[0192] Below, the arrangement configuration of domain-specific split pixel electrodes of one pixel electrode is described.

[0193] As illustrated in FIG. 6, the sub-pixel electrode of the first domain (D1) may include a plurality of split pixel electrodes (PE10) arranged at a slope corresponding to the first reference slope of the first pixel slits (SL10).

[0194] The sub-pixel electrode of the second domain (D2) may include a plurality of split pixel electrodes (PE20) arranged with a slope corresponding to the second reference slope of the second pixel slits (SL20).

[0195] The sub-pixel electrode of the third domain (D3) may include a plurality of split pixel electrodes (PE30) arranged with a slope corresponding to the third reference slope of the third pixel slits (SL30).

[0196] The sub-pixel electrode of the fourth domain (D4) may include a plurality of split pixel electrodes (PE40) arranged with a slope corresponding to the fourth reference slope of the fourth pixel slits (SL40).

[0197] The plurality of split pixel electrodes for each domain may have different reference slopes with respect to the centers (CPs) of the plurality of domains. In other words, the reference slopes of the plurality of split pixel electrodes for each domain may be the same or similar to each other.

[0198] Additionally, the angles corresponding to the inclinations of the multiple split pixel electrodes for each domain may be the same or similar to each other.

[0199] The angle of the slope of each divided pixel electrode for each domain may be the angle between the line connecting the center of the divided pixel electrode and the boundary line of the domains.

[0200] Here, the boundary lines of domains are lines that separate the domains and may be lines that exist on the boundaries between adjacent domains.

[0201] The boundary lines of the domains may be the center lines of the subpixel electrodes. The center lines of the subpixel electrodes may include the vertical center lines and the horizontal center lines of the subpixel electrodes.

[0202] The line connecting the centers of the split pixel electrodes is a line connecting the centers of the two long sides of the split pixel electrodes that face each other, and is referred to as a center line (CL).

[0203] The center line may be a line connecting the center of the first side and the center of the second side of the split pixel electrode. The first side of the split pixel electrode may be a side adjacent to the first boundary line (BL1) or the second boundary line (BL2). The second side of the split pixel electrode may be a side adjacent to the outer line (OL) of the sub-pixel electrode.

[0204] The fact that the angles corresponding to the slopes of the center lines of the split pixel electrodes are similar to each other may include that the error between the angle corresponding to the slope of the center line of one split pixel electrode and the reference angle is within the reference error range.

[0205] For example, the angle (an1) of the centerline of the plurality of first segmented pixel electrodes (PE10) arranged in the first domain (D1) may be an angle between -90 degrees and 0 degrees (or an angle between 270 degrees and 0 degrees). The first reference angle in the first domain (D1) may be approximately -45 degrees or approximately 315 degrees.

[0206] The angle (an2) of the centerline of the plurality of second segmented pixel electrodes (PE20) arranged in the second domain (D2) may be an angle between 0 and 90 degrees. The second reference angle in the second domain (D2) may be approximately 45 degrees.

[0207] The angle (an4) of the centerline of the plurality of fourth segmented pixel electrodes (PE40) arranged in the fourth domain (D4) may be an angle between 90 degrees and 180 degrees. The fourth reference angle in the fourth domain (D4) may be approximately 135 degrees.

[0208] The angle (an3) of the centerline of the plurality of third segmented pixel electrodes (PE30) arranged in the third domain (D3) may be an angle between 180 degrees and 270 degrees (or an angle between -90 degrees and -180 degrees). The third reference angle in the third domain (D3) may be approximately 225 degrees.

[0209] The reference error range in each domain can be from -45 to 45 degrees.

[0210] The plurality of split pixel electrodes provided in the first, second, third, and fourth domains may be provided in a symmetrical shape with respect to the first boundary line (BL1) and may be provided in a symmetrical shape with respect to the second boundary line (BL2).

[0211] More specifically, the arrangement of the first split pixel electrodes (PE10) of the first domain (D1) can be symmetrical with the arrangement of the second split pixel electrodes (PE20) of the second domain (D2) with respect to the first boundary line (BL1).

[0212] The arrangement of the first division pixel electrodes (PE10) of the first domain (D1) can be symmetrical with the arrangement of the third division pixel electrodes (PE30) of the third domain (D3) with respect to the second boundary line (BL2).

[0213] The arrangement of the second division pixel electrodes (PE20) of the second domain (D2) can be symmetrical with the arrangement of the fourth division pixel electrodes (PE40) of the fourth domain (D4) with respect to the second boundary line (BL2).

[0214] The arrangement of the third segmented pixel electrodes (PE30) of the third domain (D3) can be symmetrical with the arrangement of the fourth segmented pixel electrodes (PE40) of the fourth domain (D4) with respect to the first boundary line (BL1).

[0215] The first boundary line (BL1) may be a vertical boundary line that divides the first domain (D1) and the second domain (D2) and divides the third domain (D3) and the fourth domain (D4).

[0216] The first boundary line (BL1) may be the vertical center line of the sub-pixel electrode.

[0217] The second boundary line (BL2) may be a horizontal boundary line that separates the first domain (D1) and the third domain (D3) and separates the second domain (D2) and the fourth domain (D4).

[0218] The second boundary line (BL2) may be the horizontal center line of the sub-pixel electrode.

[0219] The first boundary line (BL1) and the second boundary line (BL2) may be imaginary lines. The median line (CL) may be an imaginary line.

[0220] The plurality of split pixel electrodes provided in the first, second, third, and fourth domains (D1, D2, D3, and D4) may have the same shape and arrangement configuration, with only the reference angles arranged within the domains being different.

[0221] Hereinafter, multiple split pixel electrodes of the first domain (D1) will be described as an example.

[0222] As illustrated in FIG. 7, a plurality of split pixel electrodes (PE10) provided in the first domain (D1) may be provided in a polygonal shape.

[0223] The polygonal shape may include a square or trapezoidal shape, and may further include a triangular shape.

[0224] The plurality of split pixel electrodes (PE10) provided in the first domain (D1) may be provided in a saw-tooth shape.

[0225] Each of the plurality of split pixel electrodes (PE10) can be arranged based on the center line (CL).

[0226] The center line (CL) of each of the plurality of split pixel electrodes (PE10) can form a first reference angle with the first boundary line (BL1).

[0227] A plurality of split pixel electrodes (PE10) provided in the first domain (D1) may be spaced apart from each other by a preset distance (DL1).

[0228] The preset distance (DL1) may be the distance between the center lines (CL) of adjacent split pixel electrodes (PE10) along the direction of the first boundary line (BL1).

[0229] As illustrated in Fig. 8, a plurality of split pixel electrodes (PE10) provided in the first domain (D1) may be arranged between reference lines (RL) of the first reference slope. The reference lines (RL) may also be provided spaced apart from other lines by a preset distance (DL1).

[0230] The first reference slope of the reference lines (RL) may be the same as the slope of the center line of the plurality of split pixel electrodes (PE10).

[0231] A plurality of split pixel electrodes (PE10) provided in the first domain can be arranged between a plurality of reference lines (RL).

[0232] Reference lines (RL) may be provided in a plurality of pixel slits. The reference lines (RL) may be provided in the center of the plurality of pixel slits. That is, one reference line (RL) may be provided between two long sides forming one pixel slit.

[0233] The reference lines (RL) may be virtual lines. The reference lines (RL) may be lines for generating segmented pixel electrodes.

[0234] One of the reference lines can be generated with a first reference slope at the center of the domains (CP), and the remaining reference lines can be generated at a preset distance (DL1) from one of the reference lines.

[0235] The center of the domains (CP) may be the point where the first boundary line (BL1) and the second boundary line (BL2) intersect perpendicularly.

[0236] The plurality of pixel slits per domain may have a width at the first boundary of the sub-pixel electrode that is wider than the width at the outer edge (OL) of the sub-pixel electrode.

[0237] The width of the plurality of pixel slits per domain may become narrower as they move from the first boundary line (BL1) to the outer line (OL). As a result, the width of the plurality of split pixel electrodes may become wider as they move from the first boundary line (BL1) to the outer line (OL).

[0238] The arrangement of multiple pixel slits between adjacent domains may be symmetrical with respect to a first boundary line (BL1) or a second boundary line (BL2).

[0239] For example, the arrangement of a plurality of pixel slits of the first domain (D1) may be symmetrical with the arrangement of a plurality of pixel slits of the second domain (D2) with respect to the first boundary line (BL1).

[0240] The arrangement of the plurality of pixel slits of the first domain (D1) can be symmetrical with the arrangement of the plurality of pixel slits of the third domain (D3) with respect to the second boundary line (BL2).

[0241] The arrangement of the plurality of pixel slits of the second domain (D2) can be symmetrical with the arrangement of the plurality of pixel slits of the fourth domain (D4) with respect to the second boundary line (BL2).

[0242] The arrangement of the plurality of pixel slits of the third domain (D3) can be symmetrical with the arrangement of the plurality of pixel slits of the fourth domain (D4) with respect to the first boundary line (BL1).

[0243] As illustrated in FIG. 9, the plurality of split pixel electrodes (PE10) may include a first side (S1) provided adjacent to the first and second boundaries (BL1, BL2), a second side (S2) provided facing the first side (S1) and adjacent to the outer line (OL) of the sub-pixel, a third side (S3) connecting the first end of the first side (S1) and the first end of the second side (S2), and a fourth side (S4) connecting the second end of the first side (S1) and the second end of the second side (S2).

[0244] The first width of the first side (S1) of the plurality of split pixel electrodes may be narrower than the second width of the second side (S2).

[0245] The interior angle (SA1) formed by the first side (S1) and the third side (S3) may be an obtuse angle, and the interior angle (SA2) formed by the first side (S1) and the fourth side (S4) may be an acute angle.

[0246] The interior angle (SA3) formed by the second side (S2) and the third side (S3) can be an acute angle, and the interior angle (SA4) formed by the second side (S2) and the fourth side (S4) can be an obtuse angle.

[0247] Some of the multiple split pixel electrodes (PE10) provided in the first domain may have the same area, and the rest may have different areas.

[0248] As illustrated in FIG. 10, a plurality of split pixel electrodes (PE10) of the second electrode portion (124) provided in the first domain can be arranged horizontally on the substrate portion (121).

[0249] The plurality of split pixel electrodes (PE10) may include a first split pixel electrode (PE11), a second split pixel electrode (PE12), a third split pixel electrode (PE13), a fourth split pixel electrode (PE14), and a fifth split pixel electrode (PE15).

[0250] A plurality of split pixel electrodes (PE10) can be provided spaced apart with a pixel slit (SL) between them.

[0251] The first sides (S1) of the split pixel electrodes (PE10) arranged adjacent to the first boundary line and adjacent to each other can be arranged to be spaced apart from each other by a first reference distance (SD1), and the second sides (S2) of the split pixel electrodes (PE10) arranged adjacent to the outer line (OL) and adjacent to each other can be arranged to be spaced apart from each other by a second reference distance (SD2).

[0252] The first side (S1) of the split pixel electrodes (PE10) arranged adjacent to the first boundary line and adjacent to each other may include the first side (S1) of the first, second, third, and fourth split pixel electrodes.

[0253] The second side (S2) of the split pixel electrodes (PE10) arranged adjacent to the outer line (OL) and adjacent to each other may include the second side (S2) of the second, third, fourth, and fifth split pixel electrodes.

[0254] For example, the distance between the first side (S1) of the first split pixel electrode (PE11) and the first side (S1) of the second split pixel electrode (PE12) may be the first reference distance (SD1), the distance between the first side (S1) of the second split pixel electrode (PE12) and the first side (S1) of the third split pixel electrode (PE13) may be the first reference distance (SD1), and the distance between the first side (S1) of the third split pixel electrode (PE13) and the first side (S1) of the fourth split pixel electrode (PE14) may be the first reference distance (SD1).

[0255] The distance between the second side (S2) of the second split pixel electrode (PE12) and the second side (S2) of the third split pixel electrode (PE13) may be a second reference distance (SD2), the distance between the second side (S2) of the third split pixel electrode (PE13) and the second side (S2) of the fourth split pixel electrode (PE14) may be a second reference distance (SD2), and the distance between the second side (S2) of the fourth split pixel electrode (PE14) and the second side (S2) of the fifth split pixel electrode (PE15) may be a second reference distance (SD2).

[0256] As shown in FIGS. 11 and 12, a plurality of split pixel electrodes (PE11, PE12, PE13, PE14, PE15) of the second electrode portion (124) provided in the first domain can be arranged spaced apart from the first electrode portion (123).

[0257] The distance at which the first electrode part (123) and the second electrode part (124) are spaced apart may be a distance corresponding to the thickness of the liquid crystal part (125).

[0258] When power is supplied to the first electrode part (123) and the second electrode part (124), an electric field is formed between the first electrode part (123) and the second electrode part (124).

[0259] Within an electric field, electric field lines can form, which are paths along which positive charges move in the direction of force. These electric field lines can begin at a point of high potential and end at a point of low potential.

[0260] That is, in one or more embodiments, an electric field can be formed in which charges flow out from a high-potential second electrode portion (124) and flow into a low-potential first electrode portion (123).

[0261] Multiple electric field lines move vertically along the surface of the high-potential electrode, and then change direction toward the low-potential electrode during movement. These multiple electric field lines neither separate nor intersect during movement. Furthermore, the electric field lines tend to converge at the corners of the first and second electrodes.

[0262] An electric field can be formed between the plurality of split pixel electrodes of the first electrode unit (123) and the second electrode unit (124).

[0263] The electric field formed between the plurality of split pixel electrodes of the first electrode unit (123) and the second electrode unit (124) can be formed corresponding to the shape of the split pixel electrodes.

[0264] That is, the electric force lines of the electric field at the first side (S1) of the plurality of split pixel electrodes and the electric force lines of the electric field at the second side (S2) of the plurality of split pixel electrodes can be formed differently from each other.

[0265] As illustrated in Fig. 11, an electric field can be formed between the first side of the split pixel electrodes and the first electrode portion.

[0266] An electric field line having a roughly straight shape can be formed between the first side of the split pixel electrodes and the first electrode portion.

[0267] An electric force line (or electric field line) having a roughly linear shape can be formed in an area corresponding to a first width of a first side of the split pixel electrodes.

[0268] Each of the plurality of split pixel electrodes may form an electric force line having a roughly diagonal shape or a roughly parabolic shape between the corners of the first sides and the first electrode portion.

[0269] The electric force lines formed at the corners of the first side (S1) of the split pixel electrodes can be formed up to a surface position corresponding to half of the first reference distance (SD1) among the surface positions of the first electrode portion (123).

[0270] The electric force lines formed at the corners of the first side (S1) of the split pixel electrodes may have a slope that decreases as they move from a surface position corresponding to the corner of the first side (S1) among the surface positions of the first electrode portion (123) to a surface position corresponding to half of the first reference distance (SD1).

[0271] The electric field lines formed at the corners of the first side (S1) of the split pixel electrodes do not intersect each other.

[0272] As illustrated in Fig. 12, an electric field can be formed between the second side (S2) of the split pixel electrodes and the first electrode portion (123).

[0273] An electric field line having a roughly straight shape can be formed between the second side (S2) and the first electrode portion (123) of each of the plurality of split pixel electrodes.

[0274] An electric field line having a roughly linear shape can be formed in an area corresponding to the second width of the second side (S2) of the split pixel electrodes.

[0275] An electric force line having a roughly diagonal shape or a roughly parabolic shape can be formed between the corners of the second sides of each of the plurality of split pixel electrodes and the first electrode portion (123).

[0276] The electric force lines formed at the corners of the second side (S2) of the split pixel electrodes can be formed up to a surface position corresponding to half of the second reference distance (SD2) among the surface positions of the first electrode portion (123).

[0277] The electric force lines formed at the corners of the second sides (S2) of the split pixel electrodes may have a slope that decreases as they move from a surface position corresponding to the corners of the second sides (S2) among the surface positions of the first electrode portion (123) to a surface position corresponding to half of the second reference distance (SD2).

[0278] The electric field lines formed at the corners of the second side (S2) of the split pixel electrodes do not intersect each other.

[0279] The amount of linear electric force lines formed at the second side (S2) of the split pixel electrodes may be greater than the amount of linear electric force lines formed at the first side (S1) of the split pixel electrodes.

[0280] The slope of the diagonal electric force lines formed at the corners of the first side (S1) of the split pixel electrodes may be lower than the slope of the diagonal electric force lines formed at the corners of the second side (S2) of the split pixel electrodes.

[0281] The minimum slope among the slopes of the diagonal electric force lines formed at the corners of the first sides of the split pixel electrodes may be lower than the minimum slope among the slopes of the diagonal electric force lines formed at the corners of the second sides of the split pixel electrodes.

[0282] The spacing between the electric force lines formed between the first sides of the split pixel electrodes may be wider than the spacing between the electric force lines formed between the second sides of the split pixel electrodes.

[0283] The liquid crystals of the liquid crystal unit (125) can be aligned based on the electric force lines when an electric field is formed. That is, the liquid crystals of the liquid crystal unit (125) can be aligned vertically between the first and second electrode units when no electric field is formed, and can be aligned horizontally between the first and second electrode units when an electric field is formed, but can be aligned horizontally in response to the electric force lines.

[0284] As illustrated in Fig. 13, when an electric field is formed between the first and second electrode portions, light may be emitted through an area corresponding to the sub-pixel electrode (PE10) of the second electrode portion among the areas of the sub-pixels. In addition, a dark area may be formed in an area corresponding to the pixel slits (SL) of the second electrode portion among the areas of the sub-pixels.

[0285] As illustrated in FIG. 14, the liquid crystals of the liquid crystal unit (125) can be arranged horizontally in an area corresponding to the plane of the first side (S1) of the split pixel electrodes (PE11, PE12, PE13) of the second electrode unit among the areas of the liquid crystal unit, and can be arranged substantially horizontally (or parallel) to the electric force lines in an area corresponding to the corner of the first side (S1) of the split pixel electrodes (PE11, PE12, PE13) in response to the direction of formation of the electric force lines.

[0286] The alignment angle of the liquid crystal on the plane of the first side (S1) of the split pixel electrodes (PE11, PE12, PE13) of the second electrode unit and the alignment angle of the liquid crystal on the corner of the first side (S1) of the split pixel electrodes (PE11, PE12, PE13) of the second electrode unit may be different.

[0287] As illustrated in FIG. 15, the liquid crystals of the liquid crystal unit (125) can be arranged horizontally in an area corresponding to the plane of the second side (S2) of the split pixel electrodes (PE12, PE13, PE14) of the second electrode unit among the areas of the liquid crystal unit (125), and can be arranged substantially horizontally (or parallel) to the electric force lines in an area corresponding to the corner of the second side (S2) of the split pixel electrodes (PE12, PE13, PE14) in response to the direction of formation of the electric force lines.

[0288] The alignment angle of the liquid crystal on the plane of the second side (S2) of the split pixel electrodes (PE12, PE13, PE14) of the second electrode unit and the alignment angle of the liquid crystal on the corner of the second side (S2) of the split pixel electrodes (PE12, PE13, PE14) of the second electrode unit may be different.

[0289] The width of each of the split pixel electrodes forming a sub-pixel electrode within one domain may increase as it moves from the first boundary line (BL1) of the domains to the outer line (OL).

[0290] The gap between the split pixel electrodes (PE12, PE13, PE14) forming the sub-pixel electrodes within one domain may become narrower as one moves from the first boundary line (BL1) of the domains to the outer line (OL). That is, as one moves from the first boundary line (BL1) of the domains to the outer line (OL), the gap between the fourth side (S4 of FIG. 9) of one split pixel electrode and the third side (S3 of FIG. 9) of the adjacent split pixel electrode may become narrower.

[0291] Since the size of the area of ​​the split pixel electrode increases as it moves from the first boundary line (BL1) side to the outer line (OL) side, when an electric field is formed between the split pixel electrode and the common electrode, the strength of the electric field may increase as it moves from the first boundary line (BL1) side to the outer line (OL) side.

[0292] Accordingly, when an electric field is formed between the first and second electrode portions, the alignment angles of the liquid crystals at the corners of the third and fourth sides of the split pixel electrodes forming the sub-pixel electrodes may become different.

[0293] As illustrated in FIGS. 13 and 16, the alignment angle of liquid crystals in the peripheral area of ​​the third side (S3) of the split pixel electrode forming the sub-pixel electrode may increase from the first boundary line (BL1) of the domains to the outer line (OL).

[0294] X1-X2 in Fig. 13 is a line dividing the peripheral area of ​​the third side (S3) of the split pixel electrode, and is a line divided based on the first reference angle of the center line (CL) of the split pixel electrode and the position of the third side (S3).

[0295] The first reference angle may be the angle at which the liquid crystal has maximum transmittance.

[0296] The first reference angle may be an angle that forms approximately 45 degrees with the polarization axis of the second polarization panel (120c).

[0297] That is, the width on both sides of the center line (CL) of the split pixel electrode may increase as it moves from the first boundary line (BL1) to the outer line (OL). As a result, the alignment angles of the liquid crystals around the third and fourth sides (S3, S4) of the split pixel electrode may become different.

[0298] The alignment angle of the liquid crystals in the area adjacent to the first boundary line (BL1) among the peripheral areas of the third side (S3) of the split pixel electrode may be smaller than the alignment angle of the liquid crystals in the area adjacent to the outer line (OL) among the peripheral areas of the third side (S3) of the split pixel electrode.

[0299] Here, the alignment angle of the liquid crystal can be determined based on the alignment angle of the liquid crystal when the liquid crystal is in a vertical alignment state. In other words, the angle when the liquid crystal is in a vertical alignment state can be 0 degrees.

[0300] One or more embodiments may be configured to increase the width of each split pixel electrode from a first boundary line (BL1) of the domains to an outer line (OL) based on a reference slope of a slit provided in the pixel electrode or a first reference angle of a center line (CL) of the split pixel electrode, thereby increasing the alignment angle of the liquid crystals from the first boundary line (BL1) to the outer line (OL).

[0301] Fig. 17 is a detailed configuration diagram of a display panel provided in a display device according to another embodiment.

[0302] A display panel (120) of a display device of another embodiment includes a liquid crystal panel (120a), a first polarizing panel (120b) provided on one side of the liquid crystal panel (120a), and a second polarizing panel (120c) provided on the other side of the liquid crystal panel (120a).

[0303] The first polarizing panel (120b) and the second polarizing panel (120c) of the display device of another embodiment are the same as the first polarizing panel (120b) and the second polarizing panel (120c) of the display device of one embodiment, and thus, a description thereof is omitted.

[0304] A liquid crystal panel (120a) of a display device of another embodiment includes a substrate portion (121), a color filter portion (122), a first electrode portion (123), a second electrode portion (124), and a liquid crystal portion (125).

[0305] The substrate portion (121), the second electrode portion (124), the liquid crystal portion (125), and the color filter portion (122) of the display device of another embodiment are the same as the substrate portion (121), the second electrode portion (124), the liquid crystal portion (125), and the color filter portion (122) of the display device of one embodiment, and thus, description thereof is omitted.

[0306] In another embodiment, the first electrode portion (123) of the display device may be placed between the color filter portion (122) and the liquid crystal portion (125).

[0307] The first electrode part (123) causes an electric field to be formed between it and the second electrode part (124).

[0308] The first electrode part (123) causes the liquid crystal molecules in the liquid crystal part (125) to be aligned by the electric field formed in the liquid crystal part (125).

[0309] The first electrode portion (123) may be a ground electrode.

[0310] A preset reference voltage can be applied to the first electrode portion (123).

[0311] The first electrode unit (123) may include a plurality of common electrodes.

[0312] A plurality of common electrodes of the first electrode unit (123) can be provided to correspond to a plurality of sub-pixel electrodes of the second electrode unit (124).

[0313] That is, the positions of the plurality of common electrodes of the first electrode unit (123) can correspond to the positions of the plurality of sub-pixel electrodes of the second electrode unit (124).

[0314] Each of the plurality of common electrodes may be divided by a plurality of common slits. That is, each of the plurality of common electrodes may include a plurality of divided common electrodes divided by the common slits. This will be described with reference to FIGS. 18 to 30.

[0315] FIG. 18 and FIG. 19 are exemplary views of a common electrode of a first electrode portion provided on a display panel of a display device according to another embodiment, and FIG. 20 is an exemplary view of a common electrode of a first domain provided on a display panel of a display device according to another embodiment.

[0316] FIG. 21 and FIG. 22 are exemplary diagrams of sub-pixel electrodes provided on a display panel of a display device according to another embodiment, and FIG. 23 is an exemplary diagram of a sub-pixel electrode of a first domain provided on a display panel of a display device according to another embodiment.

[0317] FIGS. 24 and 25 are exemplary diagrams of arrangement of common electrodes and sub-pixel electrodes provided on a display panel of a display device according to another embodiment, FIGS. 26 and 27 are exemplary diagrams of electric fields between common electrodes and sub-pixel electrodes provided on a display panel of a display device according to another embodiment, FIG. 28 is an exemplary diagram of light output of sub-pixels provided on a display panel of a display device according to another embodiment, FIGS. 29 and 30 are exemplary diagrams of liquid crystal arrangements between common electrodes and sub-pixel electrodes provided on a display panel of a display device according to another embodiment, and FIG. 31 is an exemplary diagram of a liquid crystal arrangement at X1-X2 of FIG. 28.

[0318] The configuration of the plurality of common electrodes corresponding to each sub-pixel may be identical. Accordingly, the configuration of one common electrode corresponding to one sub-pixel will be described.

[0319] As illustrated in FIG. 18, each common electrode (CE) can be divided into multiple domains (D1, D2, D3, D4).

[0320] The common electrode (CE) can be divided into a common electrode of the first domain, a common electrode of the second domain, a common electrode of the third domain, and a common electrode of the fourth domain.

[0321] One or more common slits (CSL) may be provided in the common electrode (CE) of the first, second, third, and fourth domains.

[0322] A domain-specific common electrode (CE) can be divided into multiple segmented common electrodes by one or more common slits (CSL).

[0323] The slopes of the common slits (CSL) provided on the common electrode for each domain may be different from each other.

[0324] The arrangement of the multiple split common electrodes for each domain may vary depending on the inclination of the common slits (CSL), and the direction of formation of the electric field for each domain may vary depending on the arrangement of the split common electrodes for each domain. In addition, the liquid crystals may be oriented in different directions depending on the inclination of the common slits (CSL) for each domain.

[0325] As illustrated in FIG. 19, the common electrode of the first domain (D1) may include a plurality of split common electrodes (CE10) arranged with a slope corresponding to the first reference slope of the plurality of first common slits (CSL10).

[0326] The common electrode of the second domain (D2) may include a plurality of split common electrodes (CE20) arranged with a slope corresponding to the second reference slope of the plurality of second common slits (CSL20).

[0327] The common electrode of the third domain (D3) may include a plurality of split common electrodes (CE30) arranged with a slope corresponding to the third reference slope of the plurality of third common slits (CSL30).

[0328] The common electrode of the fourth domain (D4) may include a plurality of split common electrodes (CE40) arranged with a slope corresponding to the fourth reference slope of the plurality of fourth common slits (CSL40).

[0329] The plurality of split common electrodes for each domain may have different reference slopes based on the centers (CPs) of the plurality of domains. In other words, the reference slopes of the plurality of split common electrodes for each domain may be the same or similar to each other.

[0330] Additionally, the angles corresponding to the inclinations of the multiple split common electrodes for each domain may be the same or similar to each other.

[0331] The angle of the slope of the divided common electrode for each domain may be the angle between the line connecting the center of the divided common electrode and the boundary line of the domains.

[0332] Here, the boundary line of domains is a line that separates adjacent domains, and may be a line that exists between adjacent domains.

[0333] The boundary lines of the domains may be the center lines of the common electrodes. The center lines of the common electrodes may include a vertical center line (first boundary line (BL1)) and a horizontal center line (second boundary line (BL2)).

[0334] The line connecting the center of the split common electrode is the line connecting the center of the two long sides of the split common electrode that face each other, and is referred to as the center line (CL).

[0335] The fact that the angles corresponding to the inclinations of the split common electrodes are similar to each other may include that the error between the angle corresponding to the inclination of one of the split common electrodes and the reference angle is within the reference error range.

[0336] For example, the angle (an1) of the centerline of the plurality of first segmented common electrodes (CE10) arranged in the first domain (D1) may be an angle between -90 degrees and 0 degrees (or an angle between 270 degrees and 0 degrees). The first reference angle in the first domain (D1) may be approximately -45 degrees or approximately 315 degrees.

[0337] The angle (an2) of the centerline of the plurality of second segmented common electrodes (CE20) arranged in the second domain (D2) may be an angle between 0 and 90 degrees. The second reference angle in the second domain (D2) may be approximately 45 degrees.

[0338] The angle (an4) of the centerline of the plurality of fourth segmented common electrodes (CE40) arranged in the fourth domain (D4) may be an angle between 90 degrees and 180 degrees. The fourth reference angle in the fourth domain (D4) may be approximately 135 degrees.

[0339] The angle (an3) of the centerline of the plurality of third segmented common electrodes (CE30) arranged in the third domain (D3) may be an angle between 180 degrees and 270 degrees (or an angle between -90 degrees and -180 degrees). The third reference angle in the third domain (D3) may be approximately 225 degrees.

[0340] The reference error range in each domain can be from -45 to 45 degrees.

[0341] The plurality of split common electrodes provided in the first, second, third, and fourth domains can be provided in a symmetrical shape with respect to the first boundary line (BL1) and can be provided in a symmetrical shape with respect to the second boundary line (BL2).

[0342] More specifically, the arrangement of the first divided common electrodes (CE10) of the first domain (D1) can be symmetrical with the arrangement of the second divided common electrodes (CE20) of the second domain (D2) with respect to the first boundary line (BL1).

[0343] The arrangement of the first divided common electrodes (CE10) of the first domain (D1) can be symmetrical with the arrangement of the third divided common electrodes (CE30) of the third domain (D3) with respect to the second boundary line (BL2).

[0344] The arrangement of the second divided common electrodes (CE20) of the second domain (D2) can be symmetrical with the arrangement of the third divided common electrodes (CE30) of the third domain (D3) with respect to the second boundary line (BL2).

[0345] The arrangement of the third segmented common electrodes (CE30) of the third domain (D3) can be symmetrical with the arrangement of the fourth segmented common electrodes (CE40) of the fourth domain (D4) with respect to the first boundary line (BL1).

[0346] The plurality of split common electrodes provided in the first, second, third, and fourth domains (D1, D2, D3, and D4) may have the same shape and arrangement configuration, with only the reference angles arranged within the domains being different.

[0347] Below, multiple split common electrodes of the first domain are explained as examples.

[0348] As illustrated in FIG. 20, a plurality of split common electrodes (CE10) provided in the first domain may be provided in a polygonal shape.

[0349] The plurality of split common electrodes (CE10) provided in the first domain can be formed in a triangular, square or pentagonal shape depending on the shape of the first domain (D1) and the arrangement positions of the first split common electrodes (CE10).

[0350] Each of the plurality of split common electrodes (CE10) can be arranged based on the center line (CL).

[0351] The center line (CL) of each of the plurality of split common electrodes (CE10) can form a first reference angle with the first boundary line (BL1).

[0352] A plurality of split common electrodes (CE10) provided in the first domain (D1) can be spaced apart from some of the plurality of split pixel electrodes (PE10) by a preset distance (DL2).

[0353] The preset distance (DL2) may be the distance between the center lines (CL) of adjacent split common electrodes (CE10) along the direction of the first boundary line (BL1).

[0354] In addition, the first reference slope of the center line of the plurality of split common electrodes (CE10) provided in the first domain may be the same as the reference slope of the reference line (RL) of the common slit.

[0355] The distance between the sides adjacent to the first boundary line (BL1) among the sides of the plurality of split common electrodes (CE10) is the first reference distance (SD1) and may be the same.

[0356] The distance between the edges adjacent to the outer line (OL) among the edges of the plurality of split common electrodes (CE10) is the second reference distance (SD2), and may be the same.

[0357] It is also possible for a plurality of split common electrodes (CE10) provided in the first domain to be spaced apart from each other based on the reference lines (RL) of the first reference slope and a preset distance (DL2).

[0358] The first reference slope of the reference lines (RL) may be the same as the slope of the center line of the plurality of split common electrodes.

[0359] The plurality of common slits per domain may have a width at the first boundary of the common electrode that is wider than the width at the outer edge of the common electrode.

[0360] The width of the plurality of common slits per domain may become narrower as they move from the first boundary line (BL1) to the outer line (OL). As a result, the width of the plurality of segmented common electrodes may become wider as they move from the first boundary line (BL1) to the outer line (OL).

[0361] The arrangement of the plurality of common slits between adjacent domains may be symmetrical with respect to the plurality of common slits of the adjacent domains and the first boundary line (BL1) or the second boundary line (BL2).

[0362] For example, the arrangement of a plurality of common slits of the first domain (D1) can be symmetrical with the arrangement of a plurality of common slits of the second domain (D2) with respect to the first boundary line (BL1).

[0363] The arrangement of the plurality of common slits of the first domain (D1) can be symmetrical with the arrangement of the plurality of common slits of the third domain (D3) with respect to the second boundary line (BL2).

[0364] The arrangement of the plurality of common slits of the second domain (D2) can be symmetrical with the arrangement of the plurality of common slits of the fourth domain (D4) with respect to the second boundary line (BL2).

[0365] The arrangement of the plurality of common slits of the third domain (D3) can be symmetrical with the arrangement of the plurality of common slits of the fourth domain (D4) with respect to the first boundary line (BL1).

[0366] As illustrated in Fig. 21, the configuration of the sub-pixel electrodes corresponding to each sub-pixel may be identical to each other. Accordingly, the configuration of one sub-pixel electrode corresponding to one sub-pixel will be described.

[0367] The sub-pixel electrode of the second electrode unit (124) can be divided into a plurality of domains (D1, D2, D3, D4).

[0368] One sub-pixel electrode can be divided into a sub-pixel electrode of the first domain, a sub-pixel electrode of the second domain, a sub-pixel electrode of the third domain, and a sub-pixel electrode of the fourth domain.

[0369] In the sub-pixel electrodes of the first, second, third, and fourth domains, one or more pixel slits (PSL) may be provided.

[0370] The domain-specific sub-pixel electrode can be divided into multiple split pixel electrodes by one or more pixel slits (PSL).

[0371] The slopes of the pixel slits (PSL) provided in the sub-pixel electrodes for each domain may be different from each other.

[0372] The arrangement of the plurality of split pixel electrodes for each domain may vary depending on the inclination of the pixel slits (PSL), and the direction of formation of the electric field for each domain may vary depending on the arrangement of the split pixel electrodes for each domain. In addition, the liquid crystals may be oriented in different directions depending on the inclination of the pixel slits for each domain.

[0373] As illustrated in FIG. 22, the sub-pixel electrode of the first domain (D1) may include a plurality of split pixel electrodes (PE10) arranged at a slope corresponding to the first reference slope of the first pixel slits (PSL10).

[0374] The sub-pixel electrode of the second domain (D2) may include a plurality of split pixel electrodes (PE20) arranged at a slope corresponding to the second reference slope of the second pixel slits (PSL20).

[0375] The sub-pixel electrode of the third domain (D3) may include a plurality of split pixel electrodes (PE30) arranged with a slope corresponding to the third reference slope of the third pixel slits (PSL30).

[0376] The sub-pixel electrode of the fourth domain (D4) may include a plurality of split pixel electrodes (PE40) arranged with a slope corresponding to the fourth reference slope of the fourth pixel slits (PSL40).

[0377] The plurality of split pixel electrodes for each domain may have different reference slopes with respect to the centers (CPs) of the plurality of domains. In other words, the reference slopes of the plurality of split pixel electrodes for each domain may be the same or similar to each other.

[0378] Additionally, the angles corresponding to the inclinations of the multiple split pixel electrodes for each domain may be the same or similar to each other.

[0379] The angle of the slope of the domain-specific divided pixel electrode may be the angle between the line connecting the center of the divided pixel electrode and the boundary line of the domains.

[0380] The line connecting the centers of the split pixel electrodes is a line connecting the centers of the two long sides of the split pixel electrodes that face each other, and is referred to as a center line (CL).

[0381] The fact that the angles corresponding to the inclinations of the split pixel electrodes are similar to each other may include that the error between the angle corresponding to the inclination of one split pixel electrode and the reference angle is within the reference error range.

[0382] For example, the angle (an1) of the centerline of the plurality of first segmented pixel electrodes (PE10) arranged in the first domain (D1) may be an angle between -90 degrees and 0 degrees (or an angle between 270 degrees and 0 degrees). The first reference angle in the first domain (D1) may be approximately -45 degrees or approximately 315 degrees.

[0383] The angle (an2) of the centerline of the plurality of second segmented pixel electrodes (PE20) arranged in the second domain (D2) may be an angle between 0 and 90 degrees. The second reference angle in the second domain (D2) may be approximately 45 degrees.

[0384] The angle (an4) of the centerline of the plurality of fourth segmented pixel electrodes (PE40) arranged in the fourth domain (D4) may be an angle between 90 degrees and 180 degrees. The fourth reference angle in the fourth domain (D4) may be approximately 135 degrees.

[0385] The angle (an3) of the centerline of the plurality of third segmented pixel electrodes (PE30) arranged in the third domain (D3) may be an angle between 180 degrees and 270 degrees (or an angle between -90 degrees and -180 degrees). The third reference angle in the third domain (D3) may be approximately 225 degrees.

[0386] The reference error range in each domain can be from -45 to 45 degrees.

[0387] The plurality of split pixel electrodes provided in the first, second, third, and fourth domains (D1, D2, D3, and D4) can be provided in a symmetrical shape with respect to the first boundary line (BL1) and can be provided in a symmetrical shape with respect to the second boundary line (BL2).

[0388] More specifically, the arrangement of the first split pixel electrodes (PE10) of the first domain (D1) can be symmetrical with the arrangement of the second split pixel electrodes (PE20) of the second domain (D2) with respect to the first boundary line (BL1).

[0389] The arrangement of the first division pixel electrodes (PE10) of the first domain (D1) can be symmetrical with the arrangement of the third division pixel electrodes (PE30) of the third domain (D3) with respect to the second boundary line (BL2).

[0390] The arrangement of the second division pixel electrodes (PE20) of the second domain (D2) can be symmetrical with the arrangement of the fourth division pixel electrodes (PE40) of the fourth domain (D4) with respect to the second boundary line (BL2).

[0391] The arrangement of the third division pixel electrodes (PE30) of the third domain (D3) can be symmetrical with the arrangement of the fourth division pixel electrodes (PE40) of the fourth domain (D4) with respect to the first boundary line (BL1).

[0392] The plurality of split pixel electrodes provided in the first, second, third, and fourth domains (D1, D2, D3, and D4) may have the same shape and arrangement configuration, with only the reference angles arranged within the domains being different.

[0393] Hereinafter, a plurality of split pixel electrodes (PE10) of the first domain (D1) will be described as an example.

[0394] As illustrated in Fig. 23, a plurality of split pixel electrodes (PE10) provided in the first domain (D1) may be provided in a polygonal shape.

[0395] The plurality of split pixel electrodes (PE10) provided in the first domain (D1) can be formed in a triangular, square, or pentagonal shape depending on the shape of the domain and the arrangement position of the split pixel electrodes.

[0396] Each of the plurality of split pixel electrodes (PE10) can be arranged based on the center line (CL).

[0397] The center line (CL) of each of the plurality of split pixel electrodes (PE10) can form a first reference angle with the first boundary line (BL1).

[0398] A plurality of split pixel electrodes (PE10) provided in the first domain can be spaced apart by a preset distance (DL2) along the direction of the first boundary line (BL1).

[0399] The preset distance (DL2) may be the distance between the center lines (CL) of adjacent split pixel electrodes (PE10).

[0400] In addition, the first reference slope of the center line of the plurality of split pixel electrodes (PE10) provided in the first domain (D1) may be the same as the reference slope of the reference line of the pixel slit.

[0401] The distance between the edges of the plurality of split pixel electrodes (PE10) adjacent to the first boundary line (BL1) is the first reference distance (SD1) and may be the same.

[0402] The distance between the edges adjacent to the outer line (OL) among the edges of the plurality of split pixel electrodes (PE10) is a first reference distance (SD1) and may be the same.

[0403] It is also possible for a plurality of split pixel electrodes (PE10) provided in the first domain to be spaced apart from each other based on the reference lines (RL) of the first reference slope and a preset distance (DL1).

[0404] The first reference slope of the reference lines (RL) may be the same as the slope of the center line of the plurality of split pixel electrodes (PE10).

[0405] The plurality of pixel slits per domain may have a width at the first boundary of the sub-pixel electrode that is wider than the width at the outer edge of the sub-pixel electrode.

[0406] The width of the plurality of pixel slits per domain may become narrower as they move from the first boundary line (BL1) to the outer line (OL). As a result, the width of the plurality of split pixel electrodes may become wider as they move from the first boundary line (BL1) to the outer line (OL).

[0407] The arrangement of the plurality of pixel slits between adjacent domains may be symmetrical with respect to the plurality of pixel slits of the adjacent domains based on the first boundary line (BL1) or the second boundary line (BL2).

[0408] For example, the arrangement of a plurality of pixel slits (PSL) of the first domain (D1) may be symmetrical with the arrangement of a plurality of pixel slits (PSL) of the second domain (D2) with respect to the first boundary line (BL1).

[0409] The arrangement of the plurality of pixel slits (PSL) of the first domain (D1) can be symmetrical with the arrangement of the plurality of pixel slits (PSL) of the third domain (D3) with respect to the second boundary line (BL2).

[0410] The arrangement of the plurality of pixel slits (PSL) of the second domain (D2) can be symmetrical with the arrangement of the plurality of pixel slits (PSL) of the fourth domain (D4) with respect to the second boundary line (BL2).

[0411] The arrangement of the plurality of pixel slits (PSL) of the third domain (D3) can be symmetrical with the arrangement of the plurality of pixel slits (PSL) of the fourth domain (D4) with respect to the first boundary line (BL1).

[0412] Among the sides of the plurality of split pixel electrodes (PE10), the side adjacent to the first boundary line (BL1) is described as the first side, and among the sides of the plurality of split pixel electrodes (PE10), the side adjacent to the outer line (OL) is described as the second side.

[0413] Among the sides of the plurality of split common electrodes, the side adjacent to the first boundary line (BL1) is described as the first side, and among the sides of the plurality of split common electrodes, the side adjacent to the outer line (OL) is described as the second side.

[0414] As illustrated in Fig. 24, the positions of the common slits provided in each common electrode (CE) may be misaligned with the positions of the pixel slits provided in the sub-pixel electrode (PE). That is, the positions of the common slits provided in the common electrode (CE) of the first electrode unit do not face the positions of the pixel slits provided in the sub-pixel electrode (CE) of the second electrode unit.

[0415] As illustrated in FIG. 25, the position of the common slit (CSL) adjacent to the outline (OL) may be a position corresponding to the central region of the second side of the split pixel electrode (PE10).

[0416] The position of the common slit (CSL) adjacent to the first boundary line (BL1) may be a position corresponding to the central region of the first side of the split pixel electrode (PE10).

[0417] The position of the pixel slit (PSL) adjacent to the outline (OL) may correspond to the central region of the second side of the split common electrode (CE10).

[0418] The position of the pixel slit (PSL) adjacent to the first boundary line (BL1) may be a position corresponding to the central region of the first side of the split common electrode (CE10).

[0419] As illustrated in FIGS. 26 and 27, the plurality of split pixel electrodes of the second electrode unit (124) can be arranged spaced apart from the split common electrodes of the first electrode unit (123).

[0420] The distance at which the first electrode part (123) and the second electrode part (124) are spaced apart may be a distance corresponding to the thickness of the liquid crystal part (125).

[0421] When power is supplied to the first electrode part (123) and the second electrode part (124), an electric field is formed between the first electrode part (123) and the second electrode part (124).

[0422] Within an electric field, multiple electric field lines can be formed, which are paths along which positive charges move in the direction of the force.

[0423] Electric force lines move vertically on the surface of the high-potential electrode portion, and change direction toward the low-potential electrode portion during movement. These multiple electric force lines do not separate or intersect each other during movement. In addition, the electric force lines have the characteristic of converging at the corners of the first and second electrode portions (123, 124).

[0424] An electric field can be formed between the plurality of split common electrodes of the first electrode unit (123) and the plurality of split pixel electrodes of the second electrode unit (124).

[0425] The electric field formed between the plurality of split common electrodes of the first electrode unit (123) and the plurality of split pixel electrodes of the second electrode unit (124) can be formed corresponding to the shapes of the split common electrodes and the split pixel electrodes.

[0426] That is, the electric force lines of the electric field at the first side among the sides of the plurality of split pixel electrodes and the electric force lines of the electric field at the second side of the plurality of split pixel electrodes can be formed differently from each other.

[0427] As illustrated in FIG. 26, an electric field can be formed between the first side (S1) of the split pixel electrodes (PE11, PE12) spaced apart by a first reference distance (SD1) and the split common electrodes (CE11, CE12) spaced apart by a first reference distance (SD1).

[0428] In the region where the first sides of the split pixel electrodes (PE11, PE12) and the first sides of the split common electrodes (CE11, CE12) face each other, an electric field line having a roughly straight shape can be formed.

[0429] In the area of ​​the corner of the first side of the split pixel electrodes (PE11, PE12) and the corner of the first side of the split common electrodes (CE11, CE12), an electric force line having a roughly diagonal shape or a roughly parabolic shape can be formed.

[0430] The electric field lines formed at the corners of the first sides of the split pixel electrodes (PE11, PE12) can be formed up to the central position among the surface positions of the first sides of the split common electrodes (CE11, CE12).

[0431] The central position among the surface positions of the first side of the split common electrodes (CE11, CE12) may be a position corresponding to the position of the pixel slit (PSL).

[0432] The electric field lines formed at the corners of the first sides of the split common electrodes (CE11, CE12) can be formed up to the central position among the surface positions of the first sides of the split pixel electrodes (PE11, PE12).

[0433] The central position among the surface positions of the first side of the split pixel electrodes (PE11, PE12) may be a position corresponding to the position of the common slit (CSL).

[0434] The electric force lines formed at the corners of the first sides of the split common electrodes (CE11, CE12) or the corners of the first sides of the split pixel electrodes (PE11, PE12) may have a lower slope than the electric force lines in the shape of a straight line.

[0435] The electric field lines formed at the corners of the first sides of the split common electrodes (CE11, CE12) or the corners of the first sides of the split pixel electrodes (PE11, PE12) do not intersect each other.

[0436] As illustrated in FIG. 27, an electric field can be formed between the second side (S2) of the split pixel electrodes (PE11, PE12) spaced apart by a second reference distance (SD2) and the split common electrodes (CE12, CE12) spaced apart by a second reference distance (SD2).

[0437] In the area where the second sides of the split pixel electrodes (PE11, PE12) and the second sides of the split common electrodes (CE11, CE12) face each other, an electric field line having a roughly straight shape can be formed.

[0438] In the area of ​​the second edge of the split pixel electrodes (PE11, PE12) and the second edge of the split common electrodes (CE11, CE12), an electric force line having a roughly diagonal shape or a roughly parabolic shape can be formed.

[0439] The electric field lines formed at the corners of the second sides of the split pixel electrodes (PE11, PE12) can be formed up to the central position among the surface positions of the second sides of the split common electrodes (CE11, CE12).

[0440] The central position among the surface positions of the second side of the split common electrodes (CE11, CE12) may be a position corresponding to the position of the pixel slit (PSL).

[0441] The electric field lines formed at the corners of the second sides of the split common electrodes (CE11, CE12) can be formed up to the central position among the surface positions of the second sides of the split pixel electrodes (PE11, PE12).

[0442] The central position among the surface positions of the second side of the split pixel electrodes (PE11, PE12) may be a position corresponding to the position of the common slit (CSL).

[0443] The electric force lines formed at the corners of the second sides (S2) of the split common electrodes (CE11, CE12) or the corners of the second sides (s2) of the split pixel electrodes (PE11, PE12) may have a lower slope than the electric force lines in the shape of a straight line.

[0444] The electric field lines formed at the corners of the second sides (S2) of the split common electrodes (CE11, CE12) or the corners of the second sides (S2) of the split pixel electrodes (PE11, PE12) do not intersect each other.

[0445] Comparing FIG. 26 and FIG. 27, electric force lines having a lower slope can be formed around the second side of the split pixel electrodes and around the second side of the split common electrodes than around the first side of the split pixel electrodes and around the first side of the split common electrodes.

[0446] That is, the slope of the diagonal electric force lines formed at the corners of the first sides of the split common electrodes and the corners of the first sides of the split pixel electrodes may be lower than the slope of the diagonal electric force lines formed at the corners of the second sides of the split common electrodes and the corners of the second sides of the split pixel electrodes.

[0447] The minimum slope among the slopes of the diagonal electric force lines formed at the corners of the first sides of the split common electrodes and the corners of the first sides (S1) of the split pixel electrodes may be lower than the minimum slope among the slopes of the diagonal electric force lines formed at the corners of the second sides (S2) of the split common electrodes and the corners of the second sides (S2) of the split pixel electrodes.

[0448] Since the distance between the second sides of the split pixel electrodes is narrower than the distance between the first sides of the split pixel electrodes, the spacing between the electric force lines formed between the first sides of the split pixel electrodes may be wider than the spacing between the electric force lines formed between the second sides of the split pixel electrodes.

[0449] Accordingly, the alignment angle of the liquid crystals can be adjusted as the slope of the electric field lines changes due to changes in the distance between the split pixel electrodes and the distance between the split common electrodes.

[0450] The liquid crystals of the liquid crystal unit (125) can be aligned based on the electric force lines when an electric field is formed. That is, the liquid crystals of the liquid crystal unit (125) can be aligned vertically between the first and second electrode units when no electric field is formed, and when an electric field is formed, the liquid crystals can be aligned substantially horizontally (or parallel) between the first and second electrode units, but can be aligned horizontally corresponding to the electric force lines.

[0451] As illustrated in Fig. 28, when an electric field is formed between the first and second electrode portions, light may be emitted through a region corresponding to the pixel electrode (PE10) of the second electrode portion among the regions of the sub-pixels. In addition, a dark region may be formed in a region corresponding to the pixel slits (PSL) of the second electrode portion among the regions of the sub-pixels, and a dark region may be formed in a region corresponding to the common slits (CSL) of the first electrode portion among the regions of the sub-pixels.

[0452] As illustrated in FIG. 29, the liquid crystals of the liquid crystal portion (125) can be arranged substantially horizontally (or parallel) in an area where the planar area of ​​the first side (S1) of the split pixel electrodes of the second electrode portion and the planar area of ​​the first side (S1) of the split common electrodes face each other among the areas of the liquid crystal portion.

[0453] The liquid crystals of the liquid crystal unit (125) can be arranged horizontally to the electric force lines in response to the direction of formation of the electric force lines in the central region and corner region of the first side (S1) of the split pixel electrodes of the second electrode unit among the regions of the liquid crystal unit. That is, the liquid crystals of the liquid crystal unit (125) can be arranged approximately vertically in the central region and corner region of the first side (S1) of the split pixel electrodes of the second electrode unit among the regions of the liquid crystal unit.

[0454] The alignment angles of the liquid crystals in the area where the planar area of ​​the first side (S1) of the split common electrodes faces the planar area of ​​the first side (S1) of the split pixel electrodes of the second electrode unit and the area corresponding to the central area of ​​the first side (S1) of the split pixel electrodes may be different.

[0455] The alignment angles of the liquid crystals in the area where the planar area of ​​the first side (S1) of the split common electrodes faces the planar area of ​​the first side (S1) of the split pixel electrodes of the second electrode unit and the area corresponding to the corner area of ​​the first side (S1) of the split pixel electrodes may be different.

[0456] As illustrated in FIG. 30, the liquid crystals of the liquid crystal unit (125) can be arranged horizontally in an area where the plane area of ​​the second side (S2) of the split pixel electrodes of the second electrode unit and the plane area of ​​the second side (S2) of the split common electrodes face each other among the areas of the liquid crystal unit.

[0457] The liquid crystals of the liquid crystal unit (125) may be arranged horizontally to the electric field lines in response to the direction of formation of the electric field lines in the central region and corner region of the second side (S2) of the split pixel electrodes of the second electrode unit among the regions of the liquid crystal unit. The liquid crystals of the liquid crystal unit (125) may be arranged approximately vertically in the central region and corner region of the second side (S2) of the split pixel electrodes of the second electrode unit among the regions of the liquid crystal unit.

[0458] The alignment angles of the liquid crystals in the area where the planar area of ​​the second side (S2) of the split pixel electrodes of the second electrode unit faces the planar area of ​​the second side (S2) of the split common electrodes and the area corresponding to the central area of ​​the second side (S2) of the split pixel electrodes may be different.

[0459] The alignment angles of the liquid crystals in the area where the planar area of ​​the second side (S2) of the split pixel electrodes of the second electrode unit faces the planar area of ​​the second side (S2) of the split common electrodes and the area corresponding to the corner area of ​​the second side (S2) of the split pixel electrodes may be different.

[0460] The width of each of the split common electrodes forming a common electrode within a domain may increase as it moves from the first boundary line (BL1) of the domains to the outer line (OL).

[0461] The gap between the split pixel electrodes forming the pixel electrode within one domain may become narrower as one moves from the first boundary line (BL1) of the domains to the outer line (OL). That is, as one moves from the first boundary line (BL1) of the domains to the outer line (OL), the gap between the fourth side of one split pixel electrode and the third side of an adjacent split pixel electrode may become narrower.

[0462] Additionally, the width of each of the split common electrodes forming a common electrode within a domain may increase as it moves from the first boundary line (BL1) of the domains to the outer line (OL).

[0463] The gap between the split common electrodes forming the common electrode within one domain may become narrower as one moves from the first boundary line (BL1) of the domains to the outer line (OL). That is, as one moves from the first boundary line (BL1) of the domains to the outer line (OL), the gap between the fourth side of one split common electrode and the third side of an adjacent split common electrode may become narrower.

[0464] Accordingly, when an electric field is formed between the first and second electrode portions, the alignment angles of the liquid crystals at the corners of the third and fourth sides of the split pixel electrodes forming the pixel electrode may become different.

[0465] X1-X2 in Fig. 28 is a line divided based on the first reference angle of the center line (CL) of the divided pixel electrode and the position of the divided pixel electrode.

[0466] The first reference angle may be the angle at which the liquid crystal has maximum transmittance.

[0467] The first reference angle may be an angle that forms approximately 45 degrees with the polarization axis of the second polarization panel (120c).

[0468] As illustrated in Figure 31, the width on both sides of the center line (CL) of the split pixel electrode may increase as it moves from the first boundary line (BL1) side to the outer line (OL) side.

[0469] The width on both sides of the center line (CL) of the split common electrode can increase as it moves from the first boundary line (BL1) side to the outer line (OL) side.

[0470] Since the size of the area of ​​the split common electrode increases as it moves from the first boundary line (BL1) side to the outer line (OL) side, and the size of the area of ​​the split pixel electrode increases as it moves from the first boundary line (BL1) side to the outer line (OL) side, when an electric field is formed between the sub-pixel electrode and the common electrode, the strength of the electric field can increase as it moves from the first boundary line (BL1) side to the outer line (OL) side.

[0471] That is, the area of ​​the surface where the plurality of split pixel electrodes and the plurality of split common electrodes face each other increases as one moves from the center line of the sub-pixel electrode to the outer edge of the sub-pixel electrode. Accordingly, the electric field between the plurality of split pixel electrodes and the plurality of split common electrodes may increase in strength as one moves from the center line of the sub-pixel electrode to the outer edge of the sub-pixel electrode. The alignment angle of the liquid crystals may vary based on the strength of the electric field.

[0472] This may result in different alignment angles of the liquid crystals around the split common pixel and the split pixel electrode.

[0473] The alignment angle of the liquid crystals in the first side of the split common electrode and the split pixel electrode may be smaller than the alignment angle of the liquid crystals in the peripheral area of ​​the second side of the split common electrode and the split pixel electrode.

[0474] Here, the alignment angle of the liquid crystal can be determined based on the alignment angle of the liquid crystal when the liquid crystal is in a vertical alignment state. In other words, the angle when the liquid crystal is in a vertical alignment state can be 0 degrees.

[0475] One or more embodiments may be configured to increase the width of each split pixel electrode as it moves from the first boundary line (BL1) of the domains to the outer line (OL) based on a reference slope of a pixel slit provided in a sub-pixel electrode or a first reference angle of a center line (CL) of a split pixel electrode, thereby increasing the alignment angle of liquid crystals at a third side of the split pixel electrode as it moves from the first boundary line (BL1) to the outer line (OL).

[0476] The disclosed embodiments have been described with reference to the attached drawings as described above. Those skilled in the art will understand that the present invention can be implemented in forms other than the disclosed embodiments without altering the technical spirit or essential features of the present invention. The disclosed embodiments are illustrative and should not be construed as limiting.

Claims

1. Common electrode; A sub-pixel electrode spaced apart from the common electrode and divided into a plurality of domains; and It includes a liquid crystal part provided between the common electrode and the sub-pixel electrode, The sub-pixel electrode includes at least one pixel slit, the width of which at the center line of the sub-pixel electrode is wider than the width at the outer line of the sub-pixel electrode, for each domain of the plurality of domains, A display device in which the arrangement of at least one pixel slit is symmetrical among the plurality of domains adjacent to each other.

2. In paragraph 1, The above sub-pixel electrode is provided by being separated into a plurality of split pixel electrodes by at least one pixel slit for each domain, A display device in which the arrangement of the plurality of split pixel electrodes is symmetrical among the plurality of domains adjacent to each other.

3. In the second paragraph, the plurality of split pixel electrodes, A display device in which the width of the first side adjacent to the center line of the sub-pixel electrode for each domain is narrower than the width of the second side adjacent to the outer line of the sub-pixel electrode.

4. In paragraph 3, The reference slope of the at least one pixel slit for each of the above domains is equal to the slope of the center line of each of the plurality of split pixel electrodes, A display device in which the center line of each of the plurality of split pixel electrodes is a line connecting the center of the first side of the split pixel electrode and the center of the second side of the split pixel electrode.

5. In paragraph 4, The reference slope of the at least one pixel slit is the slope of the centerline of the at least one pixel slit, The center line of the at least one pixel slit is a line connecting the center of the width of the at least one pixel slit at the center line of the sub-pixel electrode and the center of the width of the at least one pixel slit at the outer line of the sub-pixel electrode, A display device in which the plurality of split pixel electrodes are spaced apart from the center line of at least one pixel slit by a preset distance.

6. In paragraph 3, The first distance between the first sides of the plurality of split pixel electrodes is equal to each other, The second distance between the second sides of the plurality of split pixel electrodes is equal to each other, A display device in which the first distance is longer than the second distance.

7. In paragraph 3, The strength of the electric field between the plurality of divided pixel electrodes and the common electrode for each domain is A display device in which each split pixel electrode increases in size as it moves from the first side to the second side.

8. In paragraph 1, The common electrode is divided into the plurality of domains, and includes at least one common slit for each domain, the width of which at the center line of the common electrode is wider than the width at the outer line of the common electrode, A display device in which the arrangement of at least one common slit is symmetrical among the plurality of domains adjacent to each other.

9. In paragraph 8, The above common electrode is provided as a plurality of divided common electrodes separated into at least one common slit for each domain, Among the plurality of domains, the adjacent domains have arrangements of the plurality of split common electrodes that are symmetrical to each other, A display device in which each of the plurality of divided common electrodes has a first side adjacent to the center line of the common electrode, for each domain, that is narrower than a second side adjacent to the outer line of the common electrode.

10. In the 8th paragraph, at least one common slit is provided with a plurality of divided common electrodes, The reference slope of the at least one common slit for each of the above domains is equal to the slope of the center line of each of the plurality of split common electrodes, A display device in which the center line of each of the plurality of split common electrodes is a line connecting the center of the first side of the split common electrode and the center of the second side of the split common electrode.

11. In the 8th paragraph, at least one common slit is provided with a plurality of divided common electrodes, The reference slope of at least one common slit is the slope of the median of the at least one common slit, The center line of the at least one common slit is a line connecting the center of the width of the at least one common slit at the center line of the common electrode and the center of the width of the at least one common slit at the outer line of the common electrode, A display device in which the plurality of split common electrodes are spaced apart from the center line of at least one common slit by a preset distance.

12. In paragraph 10, The first distance between the first sides of the plurality of split common electrodes is equal to each other, The second distance between the second sides of the plurality of split common electrodes is equal to each other, A display device in which the first distance is longer than the second distance.

13. In the 8th paragraph, the sub-pixel electrode is provided to be separated into a plurality of split pixel electrodes by at least one pixel slit, and is provided to be separated into a plurality of split common electrodes by at least one common slit, The position of the at least one common slit corresponds to a surface area of ​​at least one of the plurality of split pixel electrodes, A display device wherein the position of at least one pixel slit corresponds to a surface area of ​​at least one split common electrode among the plurality of split common electrodes.

14. In the 8th paragraph, the sub-pixel electrode is provided to be separated into a plurality of split pixel electrodes by at least one pixel slit, and is provided to be separated into a plurality of split common electrodes by at least one common slit, The distance between the plurality of split common electrodes becomes narrower as one moves from the center line of the common electrode to the outer line of the common electrode, A display device in which the distance between the plurality of split pixel electrodes becomes narrower as one moves from the center line of the sub-pixel electrode to the outer line of the sub-pixel electrode.

15. In paragraph 14, The area of ​​the surface where the plurality of split pixel electrodes and the plurality of split common electrodes face each other increases as one moves from the center line of the sub-pixel electrode to the outer line of the sub-pixel electrode. A display device in which the electric field between the plurality of split pixel electrodes and the plurality of split common electrodes increases in intensity as it moves from the center line of the sub-pixel electrode to the outer line of the sub-pixel electrode.

Images