Liquid crystal panel

Abstract

To suppress light leak at black display in a liquid crystal panel with a shape in which an angle between two sides of a corner part in a plan view is acute.SOLUTION: A liquid crystal panel 1 having a first corner part C1 and a second corner part C2 includes: a first substrate 20; a second substrate 40; a liquid crystal layer 30; a first polarizing plate 10 with a first polarizing axis PA1; a second polarizing plate 60 with a second polarizing axis PA2; and a retardation plate 50 having birefringence as a whole. An angle between two sides constituting the first corner part C1 is acute and is smaller than an angle between two sides constituting the second corner part C2. An initial orientation direction LD of liquid crystal molecules in the liquid crystal layer 30 is parallel to the second polarizing axis PA2. In a cross-sectional view taken along a plane orthogonal to the second polarizing axis PA2, the liquid crystal panel 1 is curved with its central part serving as a valley. In a plan view of the liquid crystal panel 1 that is viewed from the side where the central part serves as the valley, a fast axis FA of the retardation plate 50 is inclined clockwise with respect to the second polarizing axis PA2.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a liquid crystal panel. [Background technology]

[0002] Patent Document 1 discloses a liquid crystal display element (liquid crystal panel) that has a rectangular, line-symmetric shape in a plan view and is curved in a cross-sectional view. Bending stress occurs in the substrates that make up the curved liquid crystal panel in a cross-sectional view, causing birefringence. Furthermore, birefringence is also caused by the liquid crystal molecules. These birefringences cause light leakage, where light passes through the liquid crystal panel when the black display is on.

[0003] In the liquid crystal panel of Patent Document 1, an optical compensation layer that cancels out the phase difference caused by birefringence is disposed on the substrate, thereby suppressing light leakage from the liquid crystal panel during black display. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-256680 Summary of the Invention [Problem to be solved by the invention]

[0005] Some liquid crystal panels have an asymmetric shape in plan view, unlike the shape of the liquid crystal panel in Patent Document 1. Furthermore, when the angle formed by the two sides constituting the corner of the liquid crystal panel in plan view is an acute angle, stress concentrates in the part of the liquid crystal panel corresponding to the corner, causing the magnitude of stress and phase difference in that part of the liquid crystal panel to become relatively large, which may result in light leakage.

[0006] The present disclosure has been made in consideration of the above, and aims to suppress light leakage during black display in a liquid crystal panel having a shape in which the angle formed by two sides that form a corner in a plan view is an acute angle. [Means for solving the problem]

[0007] A liquid crystal panel according to the present disclosure has a first corner and a second corner adjacent to each other in a plan view, and the angle formed by two sides constituting the first corner is an acute angle smaller than the angle formed by two sides constituting the second corner, and the liquid crystal panel includes a first substrate, a second substrate disposed opposite to the first substrate, a liquid crystal layer disposed between the first substrate and the second substrate, a first polarizing plate disposed on the opposite side of the liquid crystal layer with the first substrate interposed therebetween and having a first polarization axis, and a second polarizing plate disposed on the opposite side of the liquid crystal layer with the second substrate interposed therebetween. a second polarizing plate having a second polarization axis perpendicular to the first polarization axis in a planar view; and a retardation plate disposed between the first polarizing plate and the second polarizing plate and having birefringence throughout, wherein the initial alignment direction of liquid crystal molecules in the liquid crystal layer is parallel to the second polarization axis, and the liquid crystal layer is curved with a central valley in a cross-sectional view when cut along a plane perpendicular to the second polarization axis, and the fast axis of the retardation plate is tilted clockwise with respect to the second polarization axis in a planar view seen from the side where the central valley is.

[0008] The liquid crystal panel of the present disclosure has a first corner and a second corner adjacent to each other in a plan view, and the angle formed by two sides constituting the first corner is an acute angle smaller than the angle formed by two sides constituting the second corner, and includes a first substrate, a second substrate disposed opposite to the first substrate, a liquid crystal layer disposed between the first substrate and the second substrate, a first polarizing plate disposed on the opposite side of the liquid crystal layer with the first substrate interposed therebetween and having a first polarization axis, and a second polarizing plate disposed on the opposite side of the liquid crystal layer with the second substrate interposed therebetween. and a retardation plate disposed between the first and second polarizing plates and having birefringence throughout, wherein the initial alignment direction of liquid crystal molecules in the liquid crystal layer is parallel to the second polarization axis, and the liquid crystal layer is curved with a central valley in a cross-sectional view when cut along a plane parallel to the second polarization axis, and the fast axis of the retardation plate is tilted counterclockwise with respect to the second polarization axis in a cross-sectional view seen from the side where the central valley is formed. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a plan view of a liquid crystal panel according to an embodiment of the present disclosure. [Figure 2] FIG. 2 is a cross-sectional view of the liquid crystal panel taken along a plane perpendicular to the Y direction. [Figure 3] FIG. 3 is a partial cross-sectional view showing the configuration of a liquid crystal panel. [Figure 4] FIG. 4 is an exploded perspective view of the liquid crystal panel. [Figure 5] FIG. 5 is a diagram showing the relationship between the fast axis and slow axis of the retardation plate and the second polarization axis. [Figure 6] FIG. 6 is a diagram showing the relationship between the tilt angle and the amount of light leakage. DETAILED DESCRIPTION OF THE INVENTION

[0010] Modes (embodiments) for carrying out the present disclosure will be described in detail with reference to the drawings. The present disclosure is not limited to the contents described in the following embodiments. Furthermore, the components described below include those that can be easily imagined by a person skilled in the art and those that are substantially identical. Furthermore, the components described below can be combined as appropriate.

[0011] It should be noted that the disclosure is merely an example, and appropriate modifications that a person skilled in the art can easily conceive of while maintaining the gist of the disclosure are naturally included within the scope of the present disclosure. Furthermore, in order to clarify the explanation, the drawings may show the width, thickness, shape, etc. of each part schematically compared to the actual embodiment, but these are merely examples and do not limit the interpretation of the present disclosure. Furthermore, in this specification and each drawing, elements similar to those described above with respect to the previous drawings may be assigned the same reference numerals, and detailed descriptions may be omitted as appropriate.

[0012] The X direction shown in the drawings is the width direction of the liquid crystal panel 1. The Y direction is the height direction of the liquid crystal panel 1 and is perpendicular to the X direction. The Z direction is the depth direction of the liquid crystal panel 1 and is perpendicular to the X and Y directions. The +Z side of the Z direction (the side indicated by the arrow) corresponds to the front surface 1a side on which an image is displayed on the liquid crystal panel 1, and the -Z side of the Z direction (the side opposite to the side indicated by the arrow) corresponds to the rear surface side of the liquid crystal panel 1.

[0013] In this specification, a planar view refers to viewing the liquid crystal panel 1 along the Z direction. Note that the X, Y, and Z directions are merely examples, and the present disclosure is not limited to these directions.

[0014] 1 is a plan view of a liquid crystal panel 1 according to an embodiment of the present disclosure. The liquid crystal panel 1 is a transmissive liquid crystal display. In a plan view, the liquid crystal panel 1 has an asymmetric shape with respect to a line along the Y direction, and is a rectangle having a first corner C1, a second corner C2, a third corner C3, and a fourth corner C4.

[0015] The first corner C1 is made up of the fourth side S4, the first side S1, and a first arc portion A1 connecting the fourth side S4 and the first side S1. The second corner C2 is made up of the first side S1, the second side S2, and a second arc portion A2 connecting the first side S1 and the second side S2. The third corner C3 is made up of the second side S2, the third side S3, and a third arc portion A3 connecting the second side S2 and the third side S3. The fourth corner C4 is made up of the third side S3, the fourth side S4, and a fourth arc portion A4 connecting the third side S3 and the fourth side S4.

[0016] The first corner C1 is adjacent to the second corner C2 and the fourth corner C4, and faces the third corner C3.

[0017] In plan view, the angle formed by the two sides (i.e., the fourth side S4 and the first side S1) that make up the first corner C1 is an acute angle. In addition, in plan view, the angle formed by the two sides (i.e., the first side S1 and the second side S2) that make up the second corner C2 is a right angle. Therefore, in plan view, the angle formed by the two sides that make up the first corner C1 is an acute angle that is smaller than the angle formed by the two sides that make up the second corner C2.

[0018] The angle formed by the two sides that make up the third corner C3 (i.e., the second side S2 and the third side S3) is a right angle, and the angle formed by the two sides that make up the fourth corner C4 (i.e., the third side S3 and the fourth side S4) is an obtuse angle.

[0019] Figure 2 is a cross-sectional view of the liquid crystal panel 1 taken along a plane perpendicular to the Y direction. The liquid crystal panel 1 is curved with a valley at the center in the X direction in the cross-sectional view shown in Figure 2. Specifically, the liquid crystal panel 1 is curved convexly toward the -Z side. More specifically, the liquid crystal panel 1 is curved convexly toward the -Z side in the cross section perpendicular to the Y direction, and is flat and not curved in the cross section perpendicular to the X direction.

[0020] The front surface 1a of the liquid crystal panel 1 is curved convexly toward the -Z side with a substantially constant curvature. Specifically, the front surface 1a of the liquid crystal panel 1 is curved convexly toward the -Z side with a substantially constant curvature when viewed in a cross section of a plane perpendicular to the Y direction. It goes without saying that the curvature of the front surface 1a is not limited to being substantially constant. Furthermore, the front surface 1a of the liquid crystal panel 1 is linear when viewed in a cross section of a plane perpendicular to the X direction.

[0021] Fig. 3 is a partial cross-sectional view showing the configuration of the liquid crystal panel 1. Fig. 4 is an exploded perspective view of the liquid crystal panel 1. The liquid crystal panel 1 is a liquid crystal display of a horizontal electric field type (for example, a FFS (Fringe Field Switching) type). The liquid crystal panel 1 is also a normally black type liquid crystal display.

[0022] The liquid crystal panel 1 includes a first polarizer 10, a first substrate 20, a liquid crystal layer 30, a second substrate 40, a retarder 50, and a second polarizer 60. The first polarizer 10, the first substrate 20, the liquid crystal layer 30, the second substrate 40, the retarder 50, and the second polarizer 60 are stacked in this order from the −Z side to the +Z side.

[0023] The first polarizer 10, the first substrate 20, the liquid crystal layer 30, the second substrate 40, the retarder 50, and the second polarizer 60 are each curved in accordance with the curvature of the front surface 1a. For ease of explanation, the first polarizer 10, the first substrate 20, the liquid crystal layer 30, the second substrate 40, the retarder 50, and the second polarizer 60 shown in Fig. 4 are shown in an uncurved state.

[0024] The first polarizer 10 is disposed on the opposite side of the first substrate 20 from the liquid crystal layer 30, and has a first polarization axis PA1 shown in Fig. 4. The first polarization axis PA1 is parallel to the X direction in a plan view.

[0025] 3, the first substrate 20 includes a first insulating substrate 21, a first alignment film 22, an insulating film 23, a common electrode CE, and a plurality of pixel electrodes PE. The first alignment film 22 is in contact with the liquid crystal layer 30. The first insulating substrate 21 is made of a light-transmitting photoelastic material (e.g., glass).

[0026] The common electrode CE is provided between the first insulating substrate 21 and a light-transmitting insulating film 23. The plurality of pixel electrodes PE are provided between the insulating film 23 and the first alignment film 22. The common electrode CE and the pixel electrodes PE are formed of a light-transmitting conductive material (such as indium tin oxide (ITO) and indium zinc oxide (IZO)).

[0027] In a display area on the front surface 1a of the liquid crystal panel 1 where an image is displayed, a plurality of pixel electrodes PE overlap with a common electrode CE.

[0028] The liquid crystal layer 30 is disposed between the first substrate 20 and the second substrate 40. The liquid crystal layer 30 includes a plurality of liquid crystal molecules. In an initial state in which no voltage is applied to the common electrode CE and the pixel electrodes PE, the plurality of liquid crystal molecules are aligned by the first alignment film 22 and the second alignment film 42 described later, with the long axes of the liquid crystal molecules aligned along the initial alignment direction LD shown in FIG. 4. The initial alignment direction LD is parallel to a second polarization axis PA2 described later in a plan view.

[0029] The second substrate 40 is disposed opposite the first substrate 20. As shown in FIG. 3, the second substrate 40 includes a second insulating substrate 41 and a second alignment film 42. The second insulating substrate 41 is made of a light-transmitting photoelastic material (e.g., glass). The second alignment film 42 is in contact with the liquid crystal layer 30.

[0030] The retarder 50 is disposed between the first polarizer 10 and the second polarizer 60, and has light-transmitting properties and birefringence throughout. Specifically, the retarder 50 is disposed between the second substrate 40 and the second polarizer 60. The birefringence of the entire retarder 50 causes a phase difference in light passing through the retarder 50 that is approximately constant throughout the entire retarder 50. This birefringence is adjusted in advance based on the characteristics of the liquid crystal layer 30, etc. The retarder 50 has a fast axis FA and a slow axis DA that correspond to the birefringence of the retarder 50.

[0031] The second polarizer 60 is disposed on the opposite side of the second substrate 40 from the liquid crystal layer 30, and has a second polarization axis PA2 shown in Fig. 4. The second polarization axis PA2 is perpendicular to the first polarization axis PA1 in plan view. In other words, the second polarization axis PA2 is parallel to the Y direction in plan view.

[0032] The liquid crystal panel 1 further includes a seal member S that seals the liquid crystal in the liquid crystal layer 30. The seal member S is sandwiched between the first substrate 20 and the second substrate 40, and is disposed around the entire periphery of the liquid crystal panel 1.

[0033] 3 and 4 show only the main components of the liquid crystal panel 1 in a simplified manner, and the liquid crystal panel 1 further includes components not shown. For example, the first substrate 20 includes a light-shielding layer, a color filter layer, an overcoat layer, spacers, etc. The first substrate 20 also includes a plurality of scanning lines, a plurality of signal lines, switching elements electrically connected to each pixel electrode PE, various insulating films, etc.

[0034] In such a liquid crystal panel 1, the voltages applied to the pixel electrodes PE and the common electrode CE, and therefore the alignment of the liquid crystal molecules, are controlled based on image data input from an external device (not shown). As a result, light emitted from a backlight (not shown) or the like and passing through the liquid crystal layer 30 via the first polarizer 10 is modulated, and the light that passes through the second polarizer 60 is displayed as an image in the display area. When no voltage is applied to the pixel electrodes PE and the common electrode CE, the liquid crystal molecules are aligned in the initial alignment direction LD, and black is displayed in the display area.

[0035] As described above, the liquid crystal panel 1 is curved convexly toward the -Z side in a cross section perpendicular to the Y direction (i.e., the direction in which the second polarization axis PA2 extends), and is flat in a cross section perpendicular to the X direction. The first substrate 20 and the second substrate 40 sandwich the seal member S around the entire periphery of the liquid crystal panel 1. Therefore, the rigidity of the liquid crystal panel 1 at the periphery is higher than that at the center of the liquid crystal panel 1.

[0036] In this case, in the central portion of the liquid crystal panel 1, the curvature of the liquid crystal panel 1 affects the first substrate 20 and the second substrate 40 individually. Specifically, compressive stress occurs on the +Z side of the first insulating substrate 21, and tensile stress occurs on the -Z side. This causes different birefringence to occur on the +Z side and the -Z side of the first insulating substrate 21. Specifically, the fast axis of the birefringence occurring on the +Z side of the first insulating substrate 21 is perpendicular to the fast axis of the birefringence occurring on the -Z side. Therefore, the phase difference due to birefringence is compensated in the first insulating substrate 21. The phase difference due to birefringence is also compensated in the second insulating substrate 41, similar to the first insulating substrate 21. Furthermore, the stress occurring in the first insulating substrate 21 and the second insulating substrate 41 does not affect the liquid crystal layer 30. Therefore, no phase difference occurs in the light passing through the liquid crystal layer 30 in the central portion of the liquid crystal panel 1. That is, in the central portion of the liquid crystal panel 1, no light leakage occurs when black is displayed in the display area (hereinafter simply referred to as "light leakage").

[0037] Meanwhile, at the periphery of the liquid crystal panel 1, the curvature of the liquid crystal panel 1 affects each of the first substrate 20, the liquid crystal layer 30, and the second substrate 40 when they are integrated together. Specifically, tensile stress is generated in the first insulating substrate 21, and compressive stress is generated in the second insulating substrate 41. This causes birefringence in each of the first insulating substrate 21 and the second insulating substrate 41. The fast axis of the birefringence generated in the first insulating substrate 21 and the fast axis of the birefringence generated in the second insulating substrate 41 are perpendicular to each other. Therefore, the phase difference caused by the birefringence generated in the first insulating substrate 21 is compensated for by the phase difference caused by the birefringence generated in the second insulating substrate 41.

[0038] In this case, the tensile stress of the first insulating substrate 21 and the compressive stress of the second insulating substrate 41 affect the liquid crystal layer 30 at the periphery of the liquid crystal panel 1. This causes a phase difference in the light passing through the liquid crystal layer 30. This phase difference is not compensated for by the second polarizing plate 60, which causes light leakage.

[0039] The angle formed by the two sides that make up the first corner C1 is smaller than the angles formed by the two sides that make up the other corners. Therefore, the tensile stress of the first insulating substrate 21 and the compressive stress of the second insulating substrate 41 are greater at the first corner C1 than at the other corners. Therefore, the phase difference of light that passes through the liquid crystal layer 30 is greater at the first corner C1 than at the other corners. In other words, light is more likely to leak from the area on the first corner C1 side of the liquid crystal panel 1 than from the areas on the other corners.

[0040] In order to suppress such light leakage, when viewed in a plan view of the liquid crystal panel 1 from the side where the central part of the liquid crystal panel 1 is the valley (i.e., the +Z side), the fast axis FA of the retarder 50 is inclined clockwise with respect to the second polarization axis PA2.

[0041] 5 is a diagram showing the relationship between the fast axis FA and slow axis DA of the retarder 50 and the second polarization axis PA2. The fast axis FA and slow axis DA are perpendicular to each other. The direction indicated by the thick arrow B in FIG. 5 is the clockwise direction in a plan view of the liquid crystal panel 1 seen from the +Z side. The tilt angle θ of the fast axis FA with respect to the second polarization axis PA2 in the plan view of FIG. 5 is determined so as to suppress light leakage.

[0042] Fig. 6 is a diagram showing the relationship between the tilt angle θ and the amount of light leakage. The vertical axis in Fig. 6 represents the total amount of light leakage (amount of leaked light) when the total amount of light incident on the liquid crystal panel 1 is set to 1. The horizontal axis in Fig. 6 represents the tilt angle θ of the fast axis FA with respect to the second polarization axis PA2 in a plan view, and the direction indicated by the arrow on the horizontal axis (positive direction) is the same as the direction indicated by the thick arrow B in Fig. 5.

[0043] When the tilt angle θ is zero, the amount of light leakage is approximately 1.7E-0.4. When the tilt angle θ is increased from zero to +0.1°, the amount of light leakage becomes approximately 1.4E-0.4, a reduction of approximately 18%. Furthermore, when the tilt angle θ is increased to +0.2°, the amount of light leakage increases and becomes approximately equal to the amount of light leakage when the tilt angle θ is zero. On the other hand, when the tilt angle θ increases from zero in the negative direction (the opposite direction from the positive direction), the amount of light leakage also increases.

[0044] Therefore, when viewed in a plane from the +Z side of the liquid crystal panel 1, if the inclination angle θ of the fast axis FA relative to the second polarization axis PA2 is greater than 0° and less than 0.2°, the amount of light leakage is reduced, and light leakage from the liquid crystal panel 1 during black display can be suppressed.

[0045] Furthermore, when viewed in a plane from the +Z side of the liquid crystal panel 1, if the inclination angle θ of the fast axis FA relative to the second polarization axis PA2 is greater than or equal to 0.05° and less than or equal to 0.15°, the amount of light leakage is reliably reduced, and light leakage from the liquid crystal panel 1 during black display can be reliably suppressed.

[0046] Although preferred embodiments of the present disclosure have been described above, the present disclosure is not limited to such embodiments. The contents disclosed in the embodiments are merely examples, and various modifications are possible within the scope of the present disclosure. Appropriate modifications made within the scope of the present disclosure naturally fall within the technical scope of the present disclosure. At least one of various omissions, substitutions, and modifications of components can be made within the scope of the gist of each of the above-described embodiments and modifications.

[0047] For example, the angle formed by the two sides that make up the second corner C2 may be an obtuse angle, or an acute angle that is larger than the angle formed by the two sides that make up the first corner C1. Furthermore, the angle formed by the two sides that make up the third corner C3 may be an acute angle that is smaller than the angle formed by the two sides that make up the second corner C2.

[0048] The liquid crystal panel 1 may also be polygonal in shape, having five or more corners.

[0049] The first corner C1 may have a shape where the fourth side S4 and the first side S1 intersect without having the first arc portion A1. The second corner C2 may have a shape where the first side S1 and the second side S2 intersect without having the second arc portion A2. The third corner C3 may have a shape where the second side S2 and the third side S3 intersect without having the third arc portion A3. The fourth corner C4 may have a shape where the third side S3 and the fourth side S4 intersect without having the fourth arc portion A4.

[0050] Furthermore, the retarder 50 may be disposed, for example, between the first polarizer 10 and the first substrate 20. Alternatively, the retarder 50 may be a component of the first substrate 20 or the second substrate 40. In this case, in a plan view of the liquid crystal panel 1 seen from the side where the central portion of the liquid crystal panel 1 forms a valley (i.e., the +Z side), the fast axis FA of the retarder 50 is tilted counterclockwise with respect to the second polarization axis PA2.

[0051] Furthermore, the liquid crystal panel 1 may be curved convexly toward the +Z side in a cross section perpendicular to the Y direction (i.e., the direction in which the second polarization axis PA2 extends), and may be flat without being curved in a cross section perpendicular to the X direction. In this case, in a plan view of the liquid crystal panel 1 seen from the side where the central portion of the liquid crystal panel 1 forms a valley (i.e., the -Z side), the fast axis FA of the retarder 50 is tilted clockwise with respect to the second polarization axis PA2.

[0052] Furthermore, the liquid crystal panel 1 may be curved convexly toward the -Z side in a cross section parallel to the Y direction (i.e., the direction in which the second polarization axis PA2 extends), and may be flat without being curved in a cross section parallel to the X direction. In this case, in a plan view of the liquid crystal panel 1 seen from the side where the central portion of the liquid crystal panel 1 forms a valley (i.e., the +Z side), the fast axis FA of the retarder 50 is tilted counterclockwise with respect to the second polarization axis PA2.

[0053] Furthermore, the liquid crystal panel 1 may be curved convexly toward the +Z side in a cross section parallel to the Y direction (i.e., the direction in which the second polarization axis PA2 extends), and may be flat without being curved in a cross section parallel to the X direction. In this case, in a plan view of the liquid crystal panel 1 seen from the side where the central portion of the liquid crystal panel 1 forms a valley (i.e., the -Z side), the fast axis FA of the retarder 50 is tilted counterclockwise with respect to the second polarization axis PA2.

[0054] Furthermore, other effects and advantages brought about by the aspects described in this embodiment that are clear from the description in this specification or that can be appropriately thought of by a person skilled in the art are naturally understood to be brought about by the present disclosure. [Explanation of symbols]

[0055] 1 LCD panel 10 First polarizing plate 20 First board 30 Liquid crystal layer 40 Second board 50 Retardation plate 60 Second polarizing plate C1 1st corner C2 2nd corner C3 3rd corner CE common electrode FA retarder fast axis PA1 1st polarization axis PA2 Second polarization axis PE pixel electrode S1 1st side (side) S2 Second side (side) S3 Third side (side) S4 4th side (side) θ Tilt angle

Claims

1. A liquid crystal panel having a first corner portion and a second corner portion adjacent to each other in a plan view, wherein an angle formed by two sides constituting the first corner portion is an acute angle smaller than an angle formed by two sides constituting the second corner portion, a first substrate; a second substrate disposed opposite the first substrate; a liquid crystal layer disposed between the first substrate and the second substrate; a first polarizing plate disposed on the opposite side of the first substrate from the liquid crystal layer and having a first polarization axis; a second polarizing plate disposed on the opposite side of the liquid crystal layer with the second substrate interposed therebetween, the second polarizing plate having a second polarization axis perpendicular to the first polarization axis in a plan view; a retardation plate disposed between the first polarizing plate and the second polarizing plate and having birefringence throughout; an initial alignment direction of the liquid crystal molecules of the liquid crystal layer is parallel to the second polarization axis; the polarizer is curved such that a central portion forms a valley in a cross section when cut along a plane orthogonal to the second polarization axis, In a plan view seen from the side where the central portion is a valley, the fast axis of the retardation plate is tilted in a clockwise direction with respect to the second polarization axis. LCD panel.

2. In a plan view, the angle formed by the two sides constituting the second corner portion is a right angle or an obtuse angle. The liquid crystal panel according to claim 1 .

3. Further, the second corner portion and the third corner portion are adjacent to each other in a plan view, the angle formed by the two sides constituting the third corner portion is an acute angle smaller than the angle formed by the two sides constituting the second corner portion; The liquid crystal panel according to claim 1 .

4. the first substrate has a common electrode and a plurality of pixel electrodes; The liquid crystal panel according to claim 1 .

5. In a plan view, the tilt angle of the fast axis with respect to the second polarization axis is greater than 0° and less than 0.2°. The liquid crystal panel according to claim 1 .

6. In a plan view, the tilt angle of the fast axis with respect to the second polarization axis is equal to or greater than 0.05° and equal to or less than 0.15°. The liquid crystal panel according to claim 1 .

7. A liquid crystal panel having a first corner portion and a second corner portion adjacent to each other in a plan view, wherein an angle formed by two sides constituting the first corner portion is an acute angle smaller than an angle formed by two sides constituting the second corner portion, a first substrate; a second substrate disposed opposite the first substrate; a liquid crystal layer disposed between the first substrate and the second substrate; a first polarizing plate disposed on the opposite side of the first substrate from the liquid crystal layer and having a first polarization axis; a second polarizing plate disposed on the opposite side of the liquid crystal layer with the second substrate interposed therebetween, the second polarizing plate having a second polarization axis perpendicular to the first polarization axis in a plan view; a retardation plate disposed between the first polarizing plate and the second polarizing plate and having birefringence throughout; an initial alignment direction of the liquid crystal molecules of the liquid crystal layer is parallel to the second polarization axis; the polarizer is curved such that a central portion forms a valley in a cross section when cut along a plane parallel to the second polarization axis, In a plan view seen from the side where the central portion is a valley, the fast axis of the retardation plate is inclined in a counterclockwise direction with respect to the second polarization axis. LCD panel.

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