Indication device

Abstract

To provide a display device comprising a liquid crystal display panel in which display unevenness hardly occurs.SOLUTION: A display device DSP comprises: a liquid crystal panel PNL; a viewing angle control panel VPL that is bonded to the liquid crystal display panel PNL, and adjusts a viewing angle of the liquid crystal display panel PNL; and a support 80 that supports the viewing angle control panel VPL. In a cross-section view of a portion where the support 80 supports the viewing angle control panel VPL, a lateral end of the liquid crystal display panel PNL is located at a position inner than a lateral end of the viewing angle control panel VPL.SELECTED DRAWING: Figure 2

Description

Technical Field

[0006] , [Figure 1] ,

[0007] , ,

[0001] The present disclosure relates to a display device.

Background Art

[0002] There is a transmissive display device in which a backlight unit is arranged on the back side of a liquid crystal display panel and an image is displayed on the liquid crystal display panel by using light from the backlight unit (see Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In a display device, when an external force acts on a liquid crystal display panel, stress is locally generated and the liquid crystal display panel is deformed, there is a risk that display unevenness occurs in the liquid crystal display panel.

[0005] The present disclosure has been made in view of the above, and an object thereof is to provide a display device in which display unevenness hardly occurs in a liquid crystal display panel.

Means for Solving the Problems

[0006] The display device of the present disclosure includes a liquid crystal display panel, a viewing angle control panel bonded to the liquid crystal display panel and configured to adjust the viewing angle of the liquid crystal display panel, and a support supporting the viewing angle control panel. In a cross-sectional view of a portion where the support supports the viewing angle control panel, a side end of the liquid crystal display panel is located inside a side end of the viewing angle control panel.

Brief Description of the Drawings

[0007] [Figure 1]Figure 1 is a plan view of the display device according to the first embodiment. [Figure 2] Figure 2 is a cross-sectional view of the display device according to the first embodiment, along the line II-II. [Figure 3] Figure 3 is a cross-sectional view of a liquid crystal display panel. [Figure 4] Figure 4 is a cross-sectional view of the viewing angle control panel. [Figure 5] Figure 5 is a cross-sectional view of a modified display device according to the first embodiment. [Figure 6] Figure 6 is a cross-sectional view of the display device according to the second embodiment. [Figure 7] Figure 7 is a cross-sectional view of the main part of a modified display device according to the second embodiment. [Modes for carrying out the invention]

[0008] Embodiments for implementing this disclosure will be described in detail with reference to the drawings. This disclosure is not limited to the embodiments described below. Furthermore, the components described below include those that are easily conceivable to those skilled in the art, and those that are substantially the same. In addition, the components described below can be combined as appropriate.

[0009] Furthermore, the disclosure is merely an example, and any modifications that a person skilled in the art could easily conceive of while maintaining the intent of the disclosure are naturally included within the scope of this disclosure. In addition, drawings may schematically represent the width, thickness, shape, etc. of each part in order to clarify the explanation, but these are merely examples and do not limit the interpretation of this disclosure. Moreover, in this specification and each drawing, elements similar to those described above in previously shown drawings are denoted by the same reference numerals, and detailed explanations may be omitted as appropriate.

[0010] The X and Y directions shown in the drawings correspond to directions parallel to the main surface of the substrate included in the display device DSP. The +X and -X sides in the X direction, and the +Y and -Y sides in the Y direction correspond to the sides of the display device DSP. The Z direction corresponds to the thickness direction of the display device DSP, the +Z side in the Z direction corresponds to the front side where the image is displayed in the display device DSP, and the -Z side in the Z direction corresponds to the back side of the display device DSP. Note that the X, Y, and Z directions are examples, and this disclosure is not limited to these directions.

[0011] <First Embodiment> Figure 1 is a plan view of the display device DSP according to the first embodiment. Figure 2 is a cross-sectional view of the display device DSP according to the first embodiment along the line II-II. The display device DSP comprises a liquid crystal display panel PNL, a viewing angle control panel VPL, a backlight unit IL, a housing case 70, and a support 80.

[0012] The liquid crystal display panel PNL, the viewing angle control panel VPL, and the backlight unit IL are arranged in this order from the front to the back along the thickness direction. The viewing angle control panel VPL is attached to the side of the liquid crystal display panel PNL opposite to the display surface DS (i.e., the back).

[0013] Figure 3 is a cross-sectional view of a liquid crystal display panel (PNL). The PNL is a liquid crystal display using a lateral field switching (FFS) method. The driving method of the PNL may be an IPS method other than the FFS method, or a vertical field switching method such as the TN (Twisted Nematic) method or the VA (Vertical Alignment) method.

[0014] The liquid crystal display panel PNL comprises a first substrate SUB1, a second substrate SUB2, and a first liquid crystal layer LC1. The first liquid crystal layer LC1 is held between the first substrate SUB1 and the second substrate SUB2 and has a seal SE1 that encapsulates the liquid crystal molecules.

[0015] The first substrate SUB1 is located on the front side of the second substrate SUB2. The first substrate SUB1 includes an insulating substrate 10 and an alignment film AL1. The alignment film AL1 is in contact with the first liquid crystal layer LC1.

[0016] The second substrate SUB2 includes an insulating substrate 20, an alignment film AL2, an insulating film 21, a common electrode CE, and a plurality of pixel electrodes PE. The alignment film AL2 is in contact with the first liquid crystal layer LC1.

[0017] The common electrode CE is provided between the insulating substrate 20 and the insulating film 21. The plurality of pixel electrodes PE are provided between the insulating film 21 and the alignment film AL2.

[0018] In a display area DA where an image is displayed on the liquid crystal display panel PNL, the plurality of pixel electrodes PE overlap one common electrode CE via the insulating film 21. The pixel electrode PE and the common electrode CE are controlled to apply a voltage to the first liquid crystal layer LC1.

[0019] Note that in FIG. 3, only the main part of the liquid crystal display panel PNL is shown in a simplified manner, and the liquid crystal display panel PNL further includes members not shown. For example, the first substrate SUB1 includes a light-shielding layer, a color filter layer, an overcoat layer, spacers, etc. Also, the second substrate SUB2 includes a plurality of scanning lines, a plurality of signal lines, switching elements electrically connected to each pixel electrode PE, various insulating films, etc.

[0020] The liquid crystal display panel PNL further includes a first polarizing plate POL1 and a second polarizing plate POL2. The first polarizing plate POL1 is disposed on the front side of the insulating substrate 10. The second polarizing plate POL2 is disposed on the back side of the insulating substrate 20. The first transmission axis of the first polarizing plate POL1 and the second transmission axis of the second polarizing plate POL2 are orthogonal to the Z direction. Also, the first transmission axis of the first polarizing plate POL1 and the second transmission axis of the second polarizing plate POL2 are orthogonal to each other.

[0021] Figure 4 is a cross-sectional view of the viewing angle control panel VPL. The viewing angle control panel VPL adjusts the viewing angle of the liquid crystal display panel PNL. The viewing angle control panel VPL comprises a first liquid crystal panel LPL1 and a second liquid crystal panel LPL2.

[0022] The first liquid crystal panel LPL1 is a liquid crystal panel using a vertical electric field method (e.g., TN method). The first liquid crystal panel LPL1 comprises a third substrate SUB3, a fourth substrate SUB4, and a second liquid crystal layer LC2.

[0023] The second liquid crystal layer LC2 is held between the third substrate SUB3 and the fourth substrate SUB4 and has a seal SE2 that encapsulates the liquid crystal molecules. As will be described later, the second liquid crystal layer LC2 has optical rotational ability that rotates the polarization axis of the linearly polarized polarization component.

[0024] The third substrate SUB3 is located on the front side of the fourth substrate SUB4. The third substrate SUB3 comprises an insulating substrate 30, a first light-transmitting electrode TE1, and an alignment film AL3.

[0025] The first light-transmitting electrode TE1 is provided between the insulating substrate 30 and the alignment film AL3 in the effective region AA1 for controlling the viewing angle. The alignment film AL3 is in contact with the second liquid crystal layer LC2.

[0026] The fourth substrate SUB4 comprises an insulating substrate 40, a second light-transmitting electrode TE2, and an alignment film AL4. The second light-transmitting electrode TE2 is provided between the insulating substrate 40 and the alignment film AL4 in the effective region AA1. The alignment film AL4 is in contact with the second liquid crystal layer LC2.

[0027] The first translucent electrode TE1 is superimposed on the second translucent electrode TE2 via the second liquid crystal layer LC2. The first translucent electrode TE1 and the second translucent electrode TE2 are controlled to apply a voltage to the second liquid crystal layer LC2. Each of the first translucent electrode TE1 and the second translucent electrode TE2 is, for example, a single sheet-like electrode, but may also be an electrode divided into multiple parts along at least one of the first direction X and the second direction Y.

[0028] The second liquid crystal panel LPL2 is configured similarly to the first liquid crystal panel LPL1. Specifically, the second liquid crystal panel LPL2 is a vertical field type (e.g., TN type) liquid crystal panel and comprises a fifth substrate SUB5, a sixth substrate SUB6, and a third liquid crystal layer LC3.

[0029] The fifth substrate SUB5, the sixth substrate SUB6, the third liquid crystal layer LC3, and the effective region AA2 are configured in the same way as the third substrate SUB3, the fourth substrate SUB4, the second liquid crystal layer LC2, and the effective region AA1 of the first liquid crystal panel LPL1, respectively. In the third liquid crystal layer LC3, the seal SE3 is configured in the same way as the seal SE2.

[0030] The insulating substrate 50, the third light-transmitting electrode TE3, and the alignment film AL5 of the fifth substrate SUB5 are configured in the same way as the insulating substrate 30, the first light-transmitting electrode TE1, and the alignment film AL3 of the third substrate SUB3, respectively.

[0031] The insulating substrate 60, the fourth light-transmitting electrode TE4, and the alignment film AL6 of the sixth substrate SUB6 are configured in the same way as the insulating substrate 40, the second light-transmitting electrode TE2, and the alignment film AL4 of the fourth substrate SUB4, respectively.

[0032] Furthermore, focusing on the relationship between the liquid crystal display panel PNL, the first liquid crystal panel LPL1, and the second liquid crystal panel LPL2, the first liquid crystal layer LC1, the second liquid crystal layer LC2, and the third liquid crystal layer LC3 are superimposed on each other in the Z direction. Also, the display area DA, the effective area AA1, and the effective area AA2 are superimposed on each other in the Z direction. Multiple pixel electrodes PE are superimposed on each other in the Z direction with the first translucent electrode TE1, the second translucent electrode TE2, the third translucent electrode TE3, and the fourth translucent electrode TE4.

[0033] The insulating substrates 10, 20, 30, 40, 50, and 60 are transparent substrates such as glass substrates or resin substrates. The common electrode CE, pixel electrode PE, first translucent electrode TE1, second translucent electrode TE2, third translucent electrode TE3, and fourth translucent electrode TE4 are translucent electrodes formed from transparent conductive materials such as indium tin oxide (ITO) or indium zinc oxide (IZO). The alignment films AL1, AL2, AL3, AL4, AL5, and AL6 are horizontal alignment films having an alignment restricting force parallel to the XY plane.

[0034] Furthermore, the viewing angle control panel VPL further comprises a third polarizer POL3, a fourth polarizer POL4, a fifth polarizer POL5, and a polarization axis rotation element 100. The third polarizer POL3 is located on the front side of the first liquid crystal panel LPL1. The fourth polarizer POL4 is located between the first liquid crystal panel LPL1 and the second liquid crystal panel LPL2. The fifth polarizer POL5 is located on the back side of the second liquid crystal panel LPL2. The polarization axis rotation element 100 is located on the front side of the third polarizer POL3.

[0035] The transmission axes of the third polarizer POL3, the fourth polarizer POL4, and the fifth polarizer POL5 are each perpendicular to the Z direction. The third transmission axis of the third polarizer POL3 and the fifth transmission axis of the fifth polarizer POL5 are parallel to each other. The third and fifth transmission axes and the fourth transmission axis of the fourth polarizer POL4 are perpendicular to each other. Furthermore, the third transmission axis and the second transmission axis of the second polarizer POL2 are located in different directions around the Z axis which is aligned with the Z direction.

[0036] The polarization axis rotating element 100 is an optical sheet that rotates the polarization axis of light traveling from the third polarizing plate POL3 to the liquid crystal display panel PNL. Light transmitted through the third polarizing plate POL3 has a polarization axis parallel to the third transmission axis. The polarization axis rotating element 100 rotates the polarization axis of the light transmitted through the third polarizing plate POL3 so that it aligns with the second transmission axis of the second polarizing plate POL2.

[0037] The polarization axis rotation element 100 may be a single optical sheet or a multilayer optical sheet. Furthermore, the polarization axis rotation element 100 may be any element capable of rotating the polarization axis, and is not limited to an optical sheet; it may be an element with optical rotational ability such as a twisted nematic liquid crystal element.

[0038] As shown in Figure 2, the backlight unit IL emits light. The backlight unit IL illuminates the liquid crystal display panel PNL via the viewing angle control panel VPL. The backlight unit IL comprises a light source and a light guide plate. The light source is, for example, an LED (Light Emitting Diode) or a fluorescent lamp. The light guide plate guides the light emitted from the light source to illuminate the viewing angle control panel VPL.

[0039] Furthermore, the display device DSP does not necessarily have to include a backlight unit (IL). In this case, the display device DSP is configured so that natural light illuminates the liquid crystal display panel (PNL).

[0040] In such a display device DSP, the light emitted from the backlight unit IL (natural light) passes through the viewing angle control panel VPL and then through the liquid crystal display panel PNL, thereby outputting an image to the display surface DS.

[0041] More specifically, light emitted from the backlight unit IL enters the viewing angle control panel VPL and passes through the fifth polarizer plate POL5. The light that has passed through the fifth polarizer plate POL5 is linearly polarized, having a polarization axis parallel to the fifth transmission axis.

[0042] Light that has passed through the fifth polarizer POL5 is incident on the third liquid crystal layer LC3, and its polarization axis rotates as it passes through the third liquid crystal layer LC3. Light that has passed through the third liquid crystal layer LC3 is incident on the fourth polarizer POL4. Light that has passed through the fourth polarizer POL4 is linearly polarized, with a polarization axis parallel to the fourth transmission axis.

[0043] Light that has passed through the fourth polarizer POL4 is incident on the second liquid crystal layer LC2, and its polarization axis rotates as it passes through the second liquid crystal layer LC2. Light that has passed through the second liquid crystal layer LC2 is incident on the third polarizer POL3. Light that has passed through the third polarizer POL3 is linearly polarized, with a polarization axis parallel to the third transmission axis.

[0044] Light that has passed through the third polarizer POL3 is incident on the polarization axis rotation element 100 and rotates so that its polarization axis is parallel to the second transmission axis. Light that has passed through the polarization axis rotation element 100 is incident on the liquid crystal display panel PNL and passes through the second polarizer POL2. Light that has passed through the second polarizer POL2 is linearly polarized light with a polarization axis parallel to the second transmission axis.

[0045] Light that has passed through the second polarizer POL2 has its polarization component modulated as it passes through the first liquid crystal layer LC1. Light that has passed through the first liquid crystal layer LC1 is incident on the first polarizer POL1. Light that has passed through the first polarizer POL1 is output as an image on the display surface DS.

[0046] Next, we will explain how the viewing angle control panel VPL adjusts the viewing angle of the liquid crystal display panel PNL. The driving method of the first liquid crystal panel LPL1 and the second liquid crystal panel LPL2 is the TN method as described above, and the liquid crystal molecules contained in the second liquid crystal layer LC2 and the third liquid crystal layer LC3 are in a twisted orientation state.

[0047] First, let's describe the state where no voltage is applied to the second liquid crystal layer LC2 and the third liquid crystal layer LC3. When no voltage is applied to the second liquid crystal layer LC2 and the third liquid crystal layer LC3, the long axes of the liquid crystal molecules contained in the second liquid crystal layer LC2 and the third liquid crystal layer LC3, respectively, are perpendicular to the Z direction.

[0048] As a result, the direction of light propagation does not change in the second liquid crystal layer LC2 and the third liquid crystal layer LC3. Therefore, the transmittance of the viewing angle control panel VPL is approximately equal across the entire effective region AA1 and effective region AA2, exhibiting symmetry. Consequently, the viewing angle of the liquid crystal display panel PNL also exhibits symmetry.

[0049] On the other hand, when a voltage is applied to the second liquid crystal layer LC2 and the third liquid crystal layer LC3, the long axes of the liquid crystal molecules contained in the second liquid crystal layer LC2 and the third liquid crystal layer LC3 are tilted to intersect the XY plane, rather than being perpendicular to the Z direction.

[0050] As a result, in the second liquid crystal layer LC2 and the third liquid crystal layer LC3, the direction of light propagation changes due to the tilt of the long axis of the liquid crystal molecules. Consequently, the transmittance of the viewing angle control panel VPL is asymmetrical in the effective region AA1 and the effective region AA2. Therefore, the viewing angle of the liquid crystal display panel PNL is also asymmetrical.

[0051] For example, the viewing angle of a liquid crystal display panel PNL will be described when the viewing angle control panel VPL is configured such that the transmittance of the first liquid crystal panel LPL1 is higher on the +X side than on the -X side in the X direction when voltage is applied, and the transmittance of the second liquid crystal panel LPL2 is higher on the +Y side than on the -Y side in the Y direction when voltage is applied.

[0052] When a voltage is applied to the first liquid crystal panel LPL1 of the two liquid crystal panels LPL2, the transmittance on the +X side of the viewing angle control panel VPL becomes higher than the transmittance on the -X side in the X direction. Therefore, the viewing angle on the +X side of the liquid crystal display panel PNL becomes larger than the viewing angle on the -X side in the X direction.

[0053] Furthermore, when voltage is applied to the second liquid crystal panel LPL2, of the two liquid crystal panels LPL1 and LPL2, the transmittance on the +Y side of the viewing angle control panel VPL becomes higher than the transmittance on the -Y side in the Y direction. Therefore, in the Y direction, the viewing angle on the +Y side of the liquid crystal display panel PNL becomes larger than the viewing angle on the -Y side.

[0054] Furthermore, when voltage is applied to both the first liquid crystal panel LPL1 and the second liquid crystal panel LPL2, in the XY plane, the transmittance of the viewing angle control panel VPL on the +X and +Y sides becomes higher than the transmittance on the -X and -Y sides. Therefore, in the XY plane, the viewing angle of the liquid crystal display panel PNL on the +X and +Y sides becomes larger than the viewing angle on the -X and -Y sides. In this way, the viewing angle control panel VPL adjusts the viewing angle of the liquid crystal display panel PNL to switch between these two sides. Needless to say, the adjustment of the viewing angle of the liquid crystal display panel PNL by the viewing angle control panel VPL is not limited to the above.

[0055] Furthermore, the viewing angle control panel VPL does not necessarily have to include the second liquid crystal panel LPL2 and the fifth polarizer POL5. Also, the viewing angle control panel VPL may be composed of one or more optical sheets. In this case, the viewing angle of the liquid crystal display panel PNL is not switchable and is fixed to an arbitrary viewing angle.

[0056] The storage case 70 houses the backlight unit IL. The storage case 70 is box-shaped with an opening on the +Z side. The storage case 70 is made of, for example, metal.

[0057] The support 80 supports the viewing angle control panel VPL. The support 80 is made of, for example, metal. The support 80 has a vertical wall portion 81 that is attached to the housing case 70 and a support portion 82 that contacts the viewing angle control panel VPL and supports the viewing angle control panel VPL.

[0058] The support portion 82 is shaped to support the portion of the viewing angle control panel VPL on the side of the backlight unit IL, extending from the lateral edge of the viewing angle control panel VPL to the portion inside the lateral edge of the liquid crystal display panel PNL. The support portion 82 extends along the XY plane from the +Z side portion of the vertical wall portion 81 toward the inside of the display device DSP. This makes it possible to suppress light leakage from the backlight unit IL.

[0059] The support portion 82 may be shaped to support the viewing angle control panel VPL all around, or it may be shaped to support only a part of the viewing angle control panel VPL. Furthermore, the support portion 82 is shaped so as not to contact the liquid crystal display panel PNL. This suppresses external forces from the support portion 82 acting on the liquid crystal display panel PNL.

[0060] Furthermore, in a cross-sectional view of the portion where the support 80 supports the viewing angle control panel VPL, the lateral edge of the liquid crystal display panel PNL is located inward from the lateral edge of the viewing angle control panel VPL. In other words, in this cross-sectional view, the portion of the liquid crystal display panel PNL bonded to the viewing angle control panel VPL is located inward from the lateral edge of the liquid crystal display panel PNL. This makes it possible to suppress the generation of localized stress in the liquid crystal display panel PNL due to external forces from the support 80. Thus, it is possible to suppress the occurrence of display unevenness in the liquid crystal display panel PNL.

[0061] The support portion 82 may also be shaped to support the portion of the viewing angle control panel VPL that is inside the lateral edge of the backlight unit IL side of the viewing angle control panel VPL. Alternatively, the support portion 82 may be shaped to support the portion of the liquid crystal display panel PNL that is outside the lateral edge of the backlight unit IL side of the viewing angle control panel VPL. Furthermore, the support body 80 may be formed in an L-shaped cross-section that contacts the backlight unit IL side surface and side of the viewing angle control panel VPL, or it may be formed in a U-shaped cross-section that contacts the backlight unit IL side surface, side, and liquid crystal display panel PNL side surface of the viewing angle control panel VPL. In addition, the support body 80 may be integrated with the storage case 70.

[0062] Furthermore, in a plan view, the liquid crystal display panel PNL and the viewing angle control panel VPL may be configured such that the periphery of the portion of the liquid crystal display panel PNL bonded to the viewing angle control panel VPL is located inward from the periphery of the surface of the viewing angle control panel VPL bonded to the liquid crystal display panel PNL. This makes it possible to suppress the localized stress generated in the liquid crystal display panel PNL due to external forces from the support 80, and consequently, the occurrence of display unevenness in the liquid crystal display panel PNL.

[0063] Furthermore, as mentioned above, the driving method for the liquid crystal display panel PNL is a transverse electric field method. Compared to liquid crystal display panels PNL using a transverse electric field method, liquid crystal display panels PNL are more prone to display unevenness due to the generation of localized stress. Therefore, in a display device DSP equipped with a liquid crystal display panel PNL using a transverse electric field method, it is possible to suppress the occurrence of display unevenness in the liquid crystal display panel PNL in particular.

[0064] <Modified form of the first embodiment> Figure 5 is a cross-sectional view of a display device DSP according to a modified example of the first embodiment. The display device DSP further includes a protective panel 90. The protective panel 90 protects the liquid crystal display panel PNL. The protective panel 90 is, for example, made of translucent glass. The protective panel 90 is bonded to the display surface DS of the liquid crystal display panel PNL.

[0065] As described above, in a cross-sectional view of the portion where the support 80 supports the viewing angle control panel VPL, the lateral edge of the liquid crystal display panel PNL is located inward from the lateral edge of the viewing angle control panel VPL. This makes it possible to suppress localized stress on the liquid crystal display panel PNL due to external forces from the support 80 when the protective panel 90 is bonded to the liquid crystal display panel PNL, and consequently, to suppress the occurrence of display unevenness on the liquid crystal display panel PNL.

[0066] Furthermore, the liquid crystal display panel PNL and the viewing angle control panel VPL may be configured such that, in a plan view, the area of ​​the liquid crystal display panel PNL bonded to the protective panel 90 is included in the area of ​​the liquid crystal display panel PNL bonded to the viewing angle control panel VPL. In this case, when the protective panel 90 is bonded to the liquid crystal display panel PNL, the area of ​​the liquid crystal display panel PNL bonded to the viewing angle control panel VPL can receive external force from the protective panel 90 as a whole. This makes it possible to suppress the generation of localized stress in the liquid crystal display panel PNL due to external force from the protective panel 90, and consequently, the generation of display unevenness in the liquid crystal display panel PNL.

[0067] <Second Embodiment> Next, the DSP display device of the second embodiment of this disclosure will be described, primarily in terms of its differences from the first embodiment described above.

[0068] Figure 6 is a cross-sectional view of a display device DSP according to the second embodiment. In the display device DSP according to the second embodiment, the viewing angle control panel VPL, the liquid crystal display panel PNL, and the backlight unit IL are arranged in this order along the thickness direction. The viewing angle control panel VPL is bonded to the display surface DS of the liquid crystal display panel PNL. This makes it possible to suppress external forces acting on the liquid crystal display panel PNL from outside the display device DSP, and consequently, the generation of localized stress on the liquid crystal display panel PNL. Therefore, it is possible to suppress the occurrence of display unevenness on the liquid crystal display panel PNL.

[0069] Furthermore, the support portion 182 of the support body 80 supports the portion of the backlight unit IL side of the viewing angle control panel VPL that is outside the lateral edge of the liquid crystal display panel PNL. In other words, the support portion 182 is located away from the liquid crystal display panel PNL. Therefore, it is possible to suppress the localized stress generated in the liquid crystal display panel PNL by external forces from the support body 80, and consequently, the occurrence of display unevenness in the liquid crystal display panel PNL.

[0070] <Modified form of the second embodiment> Figure 7 is a cross-sectional view of the main part of a modified display device DSP according to the second embodiment. In the modified display device DSP according to the second embodiment, the support portion 282 has a shape that extends along the Z direction toward the +Z side and supports the viewing angle control panel VPL at its tip.

[0071] Furthermore, the support 80 has a lateral wall portion 283 that extends inward along the XY plane into the display device DSP. This makes it possible to suppress light leakage from the backlight unit IL.

[0072] Furthermore, the display device DSP further includes a protective panel 190 that is attached to the opposite side of the viewing angle control panel VPL from the side to which the liquid crystal display panel PNL is attached. The protective panel 190 does not come into contact with the liquid crystal display panel PNL. Therefore, it is possible to suppress the generation of localized stress on the liquid crystal display panel PNL due to external force from the protective panel 190 when it is attached, and consequently, the occurrence of display unevenness on the liquid crystal display panel PNL.

[0073] Although preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments. The contents disclosed in the embodiments are merely examples, and various modifications are possible without departing from the spirit of the present invention. Appropriate modifications made without departing from the spirit of the present invention naturally fall within the technical scope of the present invention. At least one of various omissions, substitutions, and modifications of components can be made without departing from the gist of each embodiment and each modification described above. [Explanation of symbols]

[0074] 70 Storage Cases 80 Support 90 protective panel 100 Polarization axis rotation element CE Common Electrode DS display surface DSP display device IL backlight unit LC1 1st liquid crystal layer LC2 2nd liquid crystal layer LC3 3rd liquid crystal layer LPL1 First LCD Panel LPL2 2nd LCD Panel PNL LCD Display Panel PE pixel electrode SUB1 First board SUB2 Second board SUB3 Third board SUB4 4th board SUB5 Fifth board SUB6 6th board TE1 1st translucent electrode (1st electrode) TE2 2nd translucent electrode (2nd electrode) TE3 3rd transparent electrode (3rd electrode) TE4 4th transparent electrode (4th electrode) VPL Viewing Angle Control Panel

Claims

1. LCD display panel, A viewing angle control panel is bonded to the aforementioned liquid crystal display panel and adjusts the viewing angle of the liquid crystal display panel, The system comprises a support for the aforementioned viewing angle control panel, In a cross-sectional view of the portion of the support that supports the viewing angle control panel, the lateral edge of the liquid crystal display panel is located inward from the lateral edge of the viewing angle control panel. Display device.

2. The aforementioned liquid crystal display panel is First substrate and A second substrate having a common electrode and multiple pixel electrodes, A first liquid crystal layer located between the first substrate and the second substrate, The display device according to claim 1.

3. The aforementioned viewing angle control panel is A third substrate having a first electrode, A fourth substrate having a second electrode, A second liquid crystal layer is located between the third substrate and the fourth substrate, The display device according to claim 1 or 2.

4. The aforementioned viewing angle control panel is A first liquid crystal panel having a third substrate having a first electrode, a fourth substrate having a second electrode, and a second liquid crystal layer between the third substrate and the fourth substrate, The device comprises a fifth substrate having a third electrode, a sixth substrate having a fourth electrode, and a second liquid crystal panel having a third liquid crystal layer between the fifth substrate and the sixth substrate. The display device according to claim 1 or 2.

5. It also features a backlight unit, The liquid crystal display panel, the viewing angle control panel, and the backlight unit are arranged in this order along the thickness direction. The display device according to claim 1.

6. The support body supports the portion of the backlight unit-side surface of the viewing angle control panel that is inward from the lateral edge of the liquid crystal display panel. The display device according to claim 5.

7. It also features a backlight unit, The viewing angle control panel, the liquid crystal display panel, and the backlight unit are arranged in this order along the thickness direction. The display device according to claim 1.

8. The support body supports the portion of the backlight unit-side surface of the viewing angle control panel that is outside the lateral edge of the liquid crystal display panel. The display device according to claim 7.

9. The viewing angle control panel is attached to the side of the liquid crystal display panel opposite to the display surface. The aforementioned liquid crystal display panel further includes a protective panel attached to the display surface of the liquid crystal display panel. The display device according to claim 1.

10. The viewing angle control panel is attached to the display surface of the liquid crystal display panel. The aforementioned viewing angle control panel further includes a protective panel attached to the side opposite to the side to which the liquid crystal display panel is attached. The display device according to claim 1.

Images