Display device

Abstract

A display device miniaturizes a display device having two light source devices. The display device includes: a first light source device that emits first emitted light along a first direction; a second light source device that emits second emitted light along a second direction different from the first direction; and a liquid crystal panel for receiving the first and second emitted light. The liquid crystal panel modulates the first emitted light into a third emitted light corresponding to a first image, emits it toward the first direction toward a light-transmitting body, and modulates the second emitted light to display a second image on a display surface. The second light source device includes: a second light emitter; an optical element for receiving the second light emitted from the second light emitter and making the second light parallel; and a prism sheet for refracting the second light emitted from the optical element so that it is emitted along a second direction as the second emitted light.

Description

Technical Field

[0001] This disclosure relates to display devices. Background Technology

[0002] As an example of a display device, Patent Document 1 discloses a liquid crystal display device comprising: two directional backlights and a transmissive liquid crystal panel that alternately displays image signals from the two systems. In the display device of Patent Document 1, the two backlights emit light in directions perpendicular to the surface of the backlights.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2007-164031 Summary of the Invention

[0006] The technical problem that the invention aims to solve

[0007] In the display device of Patent Document 1, the position and orientation of the two backlights (light source devices) are determined based on the viewer's position relative to the liquid crystal panel. Therefore, the light source devices may be enlarged due to the position and orientation of the two light source devices. On the other hand, miniaturization of the light source devices is desirable.

[0008] The purpose of this disclosure is to achieve miniaturization in a display device having two light source devices.

[0009] Solutions for solving technical problems

[0010] The display device disclosed herein includes: a first light source device that emits first emitted light along a first direction; a second light source device that emits second emitted light along a second direction, the second direction being different from the first direction; and a liquid crystal panel that receives the first emitted light and the second emitted light, wherein the liquid crystal panel modulates the first emitted light into a third emitted light corresponding to a first image and emits it toward the first direction in a manner toward a light-transmitting body, and modulates the second emitted light to display a second image on a display surface, wherein the second light source device includes: a light source; an optical element that receives the light emitted from the light source and makes the light emitted from the light source parallel light; and a prism sheet that refracts the light emitted from the optical element into light along the second direction and emits it as the second emitted light. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of a display device according to the first embodiment of this disclosure.

[0012] Figure 2This is a top view of the first light source device.

[0013] Figure 3 It is along the first light source device Figure 2 The cross-sectional view along line III-III shown.

[0014] Figure 4 It is shown Figure 1 An exploded perspective view of the structure of the second light source device shown.

[0015] Figure 5 yes Figure 4 A cross-sectional view of the second light source device shown.

[0016] Figure 6 yes Figure 1 The diagram shown is a conceptual representation of an LCD panel.

[0017] Figure 7 yes Figure 1 The image shows a top view of the LCD panel.

[0018] Figure 8 It is shown Figure 7 A diagram showing the configuration of the first and second sub-pixels.

[0019] Figure 9 It is shown Figure 7 The diagram shows the circuit configuration of the liquid crystal panel.

[0020] Figure 10 yes Figure 7 The image shows a cross-sectional view of the LCD panel.

[0021] Figure 11 yes Figure 10 The top view of the parallax barrier shown.

[0022] Figure 12 This is a diagram showing the brightness distribution of the first and second emitted light beams.

[0023] Figure 13 This is a cross-sectional view of a second light source device included in a display device according to a variation of the first embodiment of this disclosure.

[0024] Figure 14 yes Figure 13 The cross-sectional view of the optical element and the second optical element shown.

[0025] Figure 15 This is a diagram showing the structure of the second light source device included in the display device according to the second embodiment of this disclosure.

[0026] Figure 16This is a diagram illustrating the configuration of the first sub-pixel and the second sub-pixel in a liquid crystal panel of a display device according to various embodiments of the present disclosure.

[0027] Figure 17 This is a top view of the parallax barrier in the liquid crystal panel of a display device according to variations of the embodiments of this disclosure. Detailed Implementation

[0028] Hereinafter, various embodiments of the present disclosure will be described with reference to the accompanying drawings. This disclosure is not limited to the contents described in the following embodiments. Furthermore, the structural elements described below include elements readily conceived by those skilled in the art, and substantially the same elements. Moreover, the structural elements described below can be appropriately combined.

[0029] It should be noted that the disclosure is merely an example, and appropriate modifications that can be readily conceived by those skilled in the art while maintaining the spirit of this disclosure are naturally included within its scope. Furthermore, in the accompanying drawings, sometimes the width, thickness, shape, etc., of various parts are schematically shown relative to the actual form to make the explanation clearer, but this is merely an example and not a limitation on the interpretation of this disclosure. Additionally, in this specification and the various figures, elements related to the figures and identical to the foregoing content are sometimes labeled with the same reference numerals to appropriately omit detailed descriptions.

[0030] The X, Y, and Z directions shown in the accompanying drawings represent the front-back, left-right, and up-down directions of the display device 1, respectively. The X, Y, and Z directions are orthogonal to each other. In the X direction, the side indicated by the arrow is the +X side, and the opposite side is the -X side. In the Y direction, the side indicated by the arrow is the +Y side, and the opposite side is the -Y side. In the Z direction, the side indicated by the arrow is the +Z side (upper side), and the opposite side is the -Z side (lower side). It should be noted that the X, Y, and Z directions are merely examples, and this disclosure is not limited to these directions.

[0031] <First Implementation>

[0032] Figure 1 This is a schematic diagram of the display device 1 according to the first embodiment of this disclosure.

[0033] Display device 1 projects a first image onto a light-transmitting body 2, allowing observer M to visually confirm the virtual image VG corresponding to the first image. The light-transmitting body 2 is plate-shaped and translucent. The light-transmitting body 2 can be, for example, a vehicle's windshield and assembly, but is not limited to windshields and assemblies; it can simply be a structure for projecting the image output from display device 1.

[0034] Furthermore, the display device 1 displays the second image on the display surface 30a of the liquid crystal panel 30, which will be described later. The observer M can visually confirm the second image by observing the display surface 30a.

[0035] The display device 1 includes a first light source device 10, a second light source device 20, and a liquid crystal panel 30.

[0036] The first light source device 10 is positioned further to the -Z side than the liquid crystal panel 30. The first light source device 10 emits a first emitted light SL1. The optical axis of the first emitted light SL1 is along a first direction W1. The first direction W1 is parallel to the Z direction. It should be noted that the first direction W1 can also be tilted relative to the Z direction.

[0037] Figure 2 This is a top view of the first light source device 10. Figure 3 It is along the first light source device 10 Figure 2 The cross-sectional view along line III-III shown.

[0038] The first light source device 10 is a so-called direct-lit backlight. The first light source device 10 includes a housing 11, a plurality of first light emitters 12, a first lens 13, and a plate-shaped second lens 14.

[0039] A plurality of first light emitters 12 are disposed on a substrate 15 located at the bottom of the housing 11. The plurality of first light emitters 12 are arranged in a row along a direction orthogonal to the first direction W1 (the Y direction in this first embodiment). The first light emitters 12 are, for example, LEDs (Light Emitting Diodes). The first light emitters 12 emit a first light L1 toward the first lens 13.

[0040] Multiple first lenses 13 are housed in the housing 11. The number of first lenses 13 is equal to the number of first light emitters 12. The first lenses 13 are configured to overlap with the first light emitters 12 in the Z direction. The first lenses 13 are diffusion lenses. The first lenses 13 diffuse the first light L1 emitted from the first light emitters 12 in both the X and Y directions and emit it toward the second lens 14. In the first lenses 13, the diffusion degree of the first light L1 in the X direction is greater than the diffusion degree of the first light L1 in the Y direction. As a result, the distribution of the first light L1 incident on the second lens 14 can be made uniform.

[0041] The second lens 14 refracts the first light L1 emitted from the first lens 13 into parallel light along the first direction W1 (Z direction). The second lens 14 is constructed, for example, by combining multiple convex lenses. It should be noted that the second lens 14 can also be, for example, a Fresnel lens. The parallel light emitted from the second lens 14 corresponds to the first emitted light SL1 of the first light source device 10. That is, the second lens 14 refracts the first light L1 emitted from the first light source 12 into light along the first direction W1, and emits it as the first emitted light SL1. The first emitted light SL1 travels along the first direction W1.

[0042] Therefore, when the first light source device 10 has a second lens 14, compared with the case where the first light source device 10 does not have a second lens 14, the diffusion degree of the first emitted light SL1 can be reduced, and the brightness of the first emitted light SL1 can be increased. It should be noted that the first light source device 10 may also not have a first lens 13.

[0043] Figure 4 It is shown Figure 1 An exploded perspective view of the structure of the second light source device 20 shown. Figure 5 yes Figure 4 A cross-sectional view of the second light source device 20 shown.

[0044] The first light source direction DL1, the second light source direction DL2, and the third light source direction DL3 shown in the attached figures are orthogonal to each other and correspond to the width direction, depth direction, and vertical direction of the second light source device 20, respectively. Furthermore, in the first light source direction DL1, the side indicated by the arrow corresponds to the +DL1 side, and the opposite side corresponds to the -DL1 side. In the second light source direction DL2, the side indicated by the arrow corresponds to the +DL2 side, and the opposite side corresponds to the -DL2 side. In the third light source direction DL3, the side indicated by the arrow corresponds to the +DL3 side (upper side), and the opposite side corresponds to the -DL3 side (lower side). It should be noted that the first light source direction DL1, the second light source direction DL2, and the third light source direction DL3 are examples, and this disclosure is not limited to these directions.

[0045] The second light source device 20 is a so-called side-lit backlight. The second light source device 20 includes a second light-emitting body 21 (equivalent to "light source"), a light guide 22, a reflector 23, an optical element 24, a diffuser 25, and a prism sheet 26.

[0046] There are multiple second light emitters 21. These multiple second light emitters 21 are arranged on the substrate 27 in a manner aligned along the second light source direction DL2. The second light emitters 21 are, for example, LEDs (Light Emitting Diodes). Each second light emitter 21 emits a second light L2 (equivalent to "light source light") towards the light guide 22. The multiple second light emitters 21 are respectively arranged on both sides of the light guide 22 along the first light source direction DL1.

[0047] The light guide 22 has a light guide base 22a, a plurality of first protrusions 22b, and a plurality of second protrusions 22c. The light guide base 22a, the plurality of first protrusions 22b, and the plurality of second protrusions 22c are integral.

[0048] The light guide base 22a is plate-shaped and has a first side plate surface 22a1 and a second side plate surface 22a2. The first side plate surface 22a1 and the second side plate surface 22a2 are equivalent to "side plate surfaces". The first side plate surface 22a1 is the surface of the light guide 22 facing the -DL1 side. A plurality of second light emitters 21 are opposite to the first side plate surface 22a1. The second side plate surface 22a2 is the surface of the light guide 22 facing the +DL1 side. A plurality of second light emitters 21 are opposite to the second side plate surface 22a2.

[0049] A plurality of first protrusions 22b are disposed on the surface 22a3 of the light guide base 22a on the -DL3 side. A plurality of second protrusions 22c are disposed on the surface 22a4 of the light guide base 22a on the +DL3 side. The first protrusions 22b and the second protrusions 22c are each prisms with a triangular cross-section. The directions in which the first protrusions 22b extend are orthogonal to the directions in which the second protrusions 22c extend.

[0050] The light guide 22 is transparent. The second light L2 emitted from the second light emitter 21 enters the light guide 22 from the first side plate surface 22a1 and the second side plate surface 22a2. The second light L2 entering the light guide 22 is reflected at the inner surface of the light guide 22 and exits from the second protrusion 22c toward the optical element 24. It should be noted that the cross-section of the first protrusion 22b and the second protrusion 22c can also be semi-circular.

[0051] The reflector 23 is positioned further towards the -DL3 side than the light guide 22. The reflector 23 is, for example, a metal film with high reflectivity such as aluminum or silver. The reflector 23 reflects the second light L2 emitted from the first protrusion 22b toward the light guide 22. The reflector 23 suppresses the decrease in brightness of the second light L2 emitted from the light guide 22.

[0052] Optical element 24 receives second light L2 emitted from second light source 21, refracts it into parallel light along the direction DL3 of third light source, and then emits it. Second light L2 enters optical element 24 from second light source 21 via light guide 22. Optical element 24 is positioned further along the +DL3 side than light guide 22. Optical element 24 has a plate-shaped first base 24a (equivalent to "base") and a plurality of first prism portions 24b (equivalent to "prisms"). The first base 24a and the plurality of first prism portions 24b are integral.

[0053] Multiple first prism portions 24b are disposed on the surface of the first base 24a on the -DL3 side. Second light L2 emitted from the light guide 22 is directly incident on the multiple first prism portions 24b. The multiple first prism portions 24b have a triangular cross-section and extend along the second light source direction DL2, and are disposed along the first light source direction DL1 with their base edges B1 adjacent to each other.

[0054] The cross-sectional shape of the first prism portion 24b is an isosceles triangle. That is, in the cross-sectional shape of the first prism portion 24b, the first base angle θ1 and the second base angle θ2 are equal to each other. Furthermore, the first base angle θ1 and the second base angle θ2 are defined such that the second light L2 is refracted at the first prism portion 24b into a direction DL3 along the third light source direction. It should be noted that the first prism portion 24b can also be disposed on the surface of the first base portion 24a on the +DL3 side.

[0055] The diffuser 25 is positioned further from the +DL3 side than the optical element 24. The diffuser 25 is positioned between the optical element 24 and the prism sheet 26. The diffuser 25 diffuses the second light L2 emitted from the optical element 24. The diffuser 25 achieves uniformity in the brightness of the second light L2 emitted from the optical element 24.

[0056] The prism 26 refracts the second light L2 emitted from the optical element 24 along the second direction W2, and emits it as the second outgoing light SL2. The optical axis of the second outgoing light SL2 is along the second direction W2. The second direction W2 is tilted relative to the direction DL3 of the third light source.

[0057] The prism sheet 26 is positioned further along the +DL3 side than the optical element 24 and the diffuser 25. The prism sheet 26 has a plate-shaped second base 26a and a plurality of second prism portions 26b. The second base 26a and the plurality of second prism portions 26b are integrally formed.

[0058] A plurality of second prism portions 26b are disposed on the surface of the second base 26a on the +DL3 side. The plurality of second prism portions 26b have triangular cross sections and extend along the second light source direction DL2, and are disposed along the first light source direction DL1 with their base edges B2 adjacent to each other.

[0059] In the cross-sectional shape of the second prism section 26b, the third base angle θ3 is set to be smaller than the fourth base angle θ4. The third base angle θ3 and the fourth base angle θ4 are defined such that the second light L2 is refracted at the second prism section 26b into a parallel beam along the second direction W2. That is, the prism sheet 26 makes the second light L2 a parallel beam along the second direction W2. The second light L2 emitted from the prism sheet 26 is equivalent to the second emitted light SL2.

[0060] like Figure 1 As shown, the second light source device 20 is located in the Z direction, not overlapping with the first light source device 10 and the liquid crystal panel 30, and further to the -X side than the liquid crystal panel 30. The second light source device 20 is configured such that the first direction W1 and the second direction W2 are different from each other. Specifically, the second light source device 20 is configured such that the third light source direction DL3 is parallel to the X direction and the first light source direction DL1 is parallel to the Z direction. In addition, the second direction W2 is the direction from the second light source device 20 toward the observer M. Thus, the second light source device 20 emits a second emitted light SL2 along the second direction W2, which is different from the first direction W1.

[0061] For example, when the third light source direction DL3 and the second direction W2 are parallel, the second light source device 20 emits a second emitted light SL2 along the third light source direction DL3. In this case, as... Figure 1 As shown by the dashed line, the second light source device 20 has a greater degree of tilt relative to the Z direction compared to the second light source device 20 shown by the solid line. Therefore, when the display device 1 is equipped with the second light source device 20 shown by the dashed line, the display device 1 can be made larger. In other words, when the third light source direction DL3 is tilted relative to the second direction W2, as in the case of the second light source device 20, the display device 1 can be made smaller compared to the case where the third light source direction DL3 is parallel to the second direction W2.

[0062] In addition, such as Figure 4 , 5As shown, in the second light source device 20, the reflector 23, light guide 22, optical element 24, diffuser 25, and prism sheet 26 are arranged sequentially from the -DL3 side to the +DL3 side along the third light source direction DL3. That is, the prism sheet 26 is positioned closest to the +DL3 side. In this case, the prism sheet 26 can be easily replaced in the second light source device 20. Therefore, it is easy to accommodate changes in the angle of the second direction W2 relative to the third light source direction DL3. Furthermore, in the manufacturing process, by setting the process after assembling the assembly consisting of the reflector 23, light guide 22, optical element 24, and diffuser 25 as the process of assembling the prism sheet 26, the second light source device 20 having the second direction W2, where the angles of the second direction W2 relative to the third light source direction DL3 are different from each other, the second light source device 20 can be easily manufactured.

[0063] Furthermore, as described above, the first light source device 10 is a direct-lit backlight, and the second light source device 20 is a side-lit backlight. The brightness of the first emitted light SL1 of the first light source device 10 is higher than the brightness of the second emitted light SL2 of the second light source device 20.

[0064] Specifically, the brightness and number of the first light-emitting element 12, the brightness and number of the second light-emitting element 21, and the specifications of the light guide 22, reflector 23, diffuser 25, optical element 24, and prism sheet 26 are specified to ensure that the brightness of the first emitted light SL1 is higher than that of the second emitted light SL2. Furthermore, as described above, the second lens 14 of the first light source device 10 can achieve a higher brightness for the first emitted light SL1.

[0065] Furthermore, the diffusion degree of the second emitted light SL2 is greater than that of the first emitted light SL1. Specifically, the characteristics of the second lens 14, the light guide 22, the diffuser 25, and the specifications of the optical elements 24 and the prism sheet 26 are defined to ensure that the diffusion degree of the second emitted light SL2 is greater than that of the first emitted light SL1.

[0066] Figure 6 yes Figure 1 The diagram shows a concept of the liquid crystal panel 30. In the display area DA of the liquid crystal panel 30, the first image G1 and the second image G2 are simultaneously displayed in the entire display area DA from different perspectives.

[0067] Figure 7 yes Figure 1The attached figure shows a top view of the liquid crystal panel 30. The first panel direction DP1, the second panel direction DP2, and the third panel direction DP3 shown are orthogonal to each other and correspond to the width direction, depth direction, and vertical direction of the liquid crystal panel 30, respectively. Furthermore, in the first panel direction DP1, the side indicated by the arrow corresponds to the +DP1 side, and the opposite side corresponds to the -DP1 side. In the second panel direction DP2, the side indicated by the arrow corresponds to the +DP2 side, and the opposite side corresponds to the -DP2 side. In the third panel direction DP3, the side indicated by the arrow corresponds to the +DP3 side (upper side), and the opposite side corresponds to the -DP3 side (lower side). It should be noted that the first panel direction DP1, the second panel direction DP2, and the third panel direction DP3 are examples, and this disclosure is not limited to these directions.

[0068] The LCD panel 30 is configured such that the second panel direction DP2 and the Y direction are parallel, and the third panel direction DP3 is inclined to the first direction W1 (see reference). Figure 1 The LCD panel 30 is configured such that the third panel direction DP3 is tilted relative to the second direction W2. It should be noted that the LCD panel 30 can also be configured such that the third panel direction DP3 is parallel to the second direction W2.

[0069] The liquid crystal panel 30 displays images based on image signals output from an external device (such as a car navigation system) electrically connected via a flexible wiring substrate (not shown).

[0070] The LCD panel 30 is a transmissive LCD. For example... Figure 7 As shown, the liquid crystal panel 30 has a display area DA for displaying images in the display surface 30a. The display surface 30a is flat and planar. The display surface 30a is orthogonal to the third panel direction DP3.

[0071] The liquid crystal panel 30 has a plurality of pixels P arranged in a matrix when viewed from above. The row direction is parallel to the first panel direction DP1. The column direction is parallel to the second panel direction DP2. When the liquid crystal panel 30 is viewed from above, the plurality of pixels P overlap with the display area DA. Pixel P includes a plurality of first pixels P1 and a plurality of second pixels P2.

[0072] The first pixel P1 is the pixel corresponding to the first image G1. The first pixel P1 has a first sub-pixel SP1a, a second first sub-pixel SP1b, and a third first sub-pixel SP1c. The first first sub-pixel SP1a is a red sub-pixel. The second first sub-pixel SP1b is a green sub-pixel. The third first sub-pixel SP1c is a blue sub-pixel. Hereinafter, without distinguishing between the first first sub-pixel SP1a, the second first sub-pixel SP1b, and the third first sub-pixel SP1c, they will simply be referred to as "first sub-pixel SP1".

[0073] The second pixel P2 is the pixel corresponding to the second image G2. The second pixel P2 has a first second sub-pixel SP2a, a second second sub-pixel SP2b, and a third second sub-pixel SP2c. The first second sub-pixel SP2a is a red sub-pixel. The second second sub-pixel SP2b is a green sub-pixel. The third second sub-pixel SP2c is a blue sub-pixel. Hereinafter, without distinguishing between the first second sub-pixel SP2a, the second second sub-pixel SP2b, and the third second sub-pixel SP2c, they will simply be referred to as "second sub-pixel SP2".

[0074] Therefore, the first pixel P1 has three first sub-pixels SP1, and the second pixel P2 has three second sub-pixels SP2. The number and color of the first sub-pixels SP1 and the number and color of the second sub-pixels SP2 are, of course, not limited to the numbers and colors mentioned above.

[0075] Figure 8 It is shown Figure 7 The diagram shows the configuration of the first sub-pixel SP1 and the second sub-pixel SP2. It should be noted that... Figure 8 In the diagram, the first sub-pixel SP1 is marked with a rectangular shape indicated by a dashed line, and the second sub-pixel SP2 is marked with a rectangular shape indicated by a single-dot dashed line.

[0076] The first pixel P1 and the second pixel P2 are respectively arranged along the row direction (first panel direction DP1). Furthermore, the first pixel P1 and the second pixel P2 are respectively arranged in a zigzag pattern along the column direction (second panel direction DP2).

[0077] In the row direction, if we look at the first pixel P1, we will find that the first sub-pixel SP1a of the first pixel, the first sub-pixel SP1c of the third pixel, and the first sub-pixel SP1b of the second pixel are repeatedly configured in this order. Similarly, in the row direction, if we look at the second pixel P2, we will find that the second sub-pixel SP2b of the second pixel, the second sub-pixel SP2a of the first pixel, and the second sub-pixel SP2c of the third pixel are repeatedly configured in this order.

[0078] Furthermore, the first sub-pixel SP1 and the second sub-pixel SP2 are alternately arranged along the row direction. That is, in the row direction, the first sub-pixel SP1 and the second sub-pixel SP2 are adjacent to each other. Specifically, in the row direction, the first sub-pixel SP1a of the first is adjacent to at least one of the second sub-pixel SP2b of the second and the second sub-pixel SP2c of the third. In addition, in the row direction, the first sub-pixel SP1b of the second is adjacent to at least one of the second sub-pixel SP2c of the third and the second sub-pixel SP2a of the first. And, in the row direction, the first sub-pixel SP1c of the third is adjacent to at least one of the second sub-pixel SP2a of the first and the second sub-pixel SP2b of the second.

[0079] Furthermore, in the row direction, the second sub-pixel SP2a of the first is adjacent to at least one of the first sub-pixel SP1b of the second and the first sub-pixel SP1c of the third. Additionally, in the row direction, the second sub-pixel SP2b of the second is adjacent to at least one of the first sub-pixel SP1c of the third and the first sub-pixel SP1a of the first. Furthermore, in the row direction, the second sub-pixel SP2c of the third is adjacent to at least one of the first sub-pixel SP1a of the first and the first sub-pixel SP1b of the second.

[0080] Furthermore, the first sub-pixel SP1 and the second sub-pixel SP2 are arranged alternately along the column direction. That is, in the column direction, the first sub-pixel SP1 and the second sub-pixel SP2 are adjacent to each other. Specifically, the first sub-pixel SP1a and the second sub-pixel SP2a of the first sub-pixel are arranged alternately along the column direction. The first sub-pixel SP1b and the second sub-pixel SP2b of the second sub-pixel are arranged alternately along the column direction. The first sub-pixel SP1c and the second sub-pixel SP2c of the third sub-pixel are arranged alternately along the column direction.

[0081] Figure 9 To show Figure 7 The diagram shows the circuit configuration of the liquid crystal panel 30. The liquid crystal panel 30 includes a driving circuit 31 and switching elements SW, sub-pixel electrodes PE, common electrodes CE, liquid crystal capacitors LC, and holding capacitors CS for each of the first sub-pixel SP1 and the second sub-pixel SP2. The first sub-pixel SP1 and the second sub-pixel SP2 are configured similarly.

[0082] The driving circuit 31 drives the liquid crystal panel 30. The driving circuit 31 includes a signal processing circuit 31a, a signal output circuit 31b, and a scanning circuit 31c.

[0083] Based on the image signal sent from the external device, the signal processing circuit 31a outputs a first sub-pixel signal representing the grayscale of the first sub-pixel SP1 and a second sub-pixel signal representing the grayscale of the second sub-pixel SP2 to the signal output circuit 31b. Additionally, the signal processing circuit 31a outputs a clock signal to synchronize the operation of the signal output circuit 31b with the operation of the scanning circuit 31c to both the signal output circuit 31b and the scanning circuit 31c.

[0084] The signal output circuit 31b outputs the first sub-pixel signal to the first sub-pixel SP1 and the second sub-pixel signal to the second sub-pixel SP2. The signal output circuit 31b is electrically connected to the first sub-pixel SP1 and the second sub-pixel SP2 via a plurality of signal lines Lb extending along the second panel direction DP2.

[0085] The scanning circuit 31c and the signal output circuit 31b output a first sub-pixel signal and a second sub-pixel signal to scan the first sub-pixel SP1 and the second sub-pixel SP2 synchronously. The scanning circuit 31c is electrically connected to the first sub-pixel SP1 and the second sub-pixel SP2 via a plurality of scan lines Lc extending along the first panel direction DP1.

[0086] When viewing the display surface 30a from above, the area divided by two adjacent signal lines Lb in the first panel direction DP1 and two adjacent scan lines Lc in the second panel direction DP2 corresponds to one of the first sub-pixel SP1 and the second sub-pixel SP2.

[0087] The switching element SW is, for example, composed of a thin-film transistor (TFT). In the switching element SW, the source electrode is electrically connected to the signal line Lb, and the gate electrode is electrically connected to the scan line Lc.

[0088] The sub-pixel electrode PE is connected to the drain electrode of the switching element SW. Multiple common electrodes CE are configured corresponding to multiple scan lines Lc. Both the sub-pixel electrode PE and the common electrode CE are transparent.

[0089] The liquid crystal capacitor LC is the capacitive component of the liquid crystal material in the liquid crystal layer 33 (described later) located between the sub-pixel electrode PE and the common electrode CE. The capacitor CS is maintained between an electrode at the same potential as the common electrode CE and an electrode at the same potential as the sub-pixel electrode PE.

[0090] Figure 10 yes Figure 7 The diagram shows a cross-sectional view of the liquid crystal panel 30. The liquid crystal panel 30 also includes a first substrate 32, a liquid crystal layer 33, and a second substrate 34. The first substrate 32, the liquid crystal layer 33, and the second substrate 34 are each transparent and are arranged in this order from the -DP3 side to the +DP3 side along the third panel direction DP3. The first substrate 32 and the second substrate 34 are rectangular when viewed from above. It should be noted that the shapes of the first substrate 32 and the second substrate 34 when viewed from above can also be shapes other than rectangular, such as circles or trapezoids.

[0091] A common electrode CE is disposed on the main surface 32a of the first substrate 32 on the +DP3 side. In addition, an insulating layer IL is disposed on the +DP3 side of the common electrode CE, and a sub-pixel electrode PE and an alignment film AL are also disposed thereon.

[0092] The sub-pixel electrode PE is disposed between the insulating layer IL and the alignment film AL. Thus, the common electrode CE and the sub-pixel electrode PE are disposed on the first substrate 32. In other words, the liquid crystal panel 30 is a liquid crystal display using a lateral electric field effect display method.

[0093] The second substrate 34 is located on the +DP3 side of the first substrate 32. An outer coating OC, a first color filter CF1, a second color filter CF2, a light-shielding film SM, and an alignment film AL are disposed on the lower surface 34b side of the second substrate 34. The light-shielding film SM, the first color filter CF1, the second color filter CF2, and the outer coating OC are disposed between the second substrate 34 and the alignment film AL.

[0094] The outer coating OC is formed from a light-transmitting material.

[0095] First color filter CF1 and second color filter CF2 are disposed between the second substrate 34 and the liquid crystal layer 33. First color filter CF1 is the color filter included in the first sub-pixel SP1. Second color filter CF2 is the color filter included in the second sub-pixel SP2.

[0096] The first color filter CF1 and the second color filter CF2 are rectangular when viewed from above. Both color filters CF1 and CF2 are translucent, and the peak values ​​of the transmitted light spectrum are predetermined. These peak values ​​correspond to the colors of the first and second color filters CF1 and CF2, respectively. In other words, the light transmitted through the first and second color filters CF1 and CF2 is colored. It should be noted that the shapes of the first and second color filters CF1 and CF2 when viewed from above can also be changed to match the shapes of the first and second sub-pixels SP1 and SP2.

[0097] The color of the first color filter CF1 is the same as the color of the first sub-pixel SP1. The color of the second color filter CF2 is the same as the color of the second sub-pixel SP2. That is, the first sub-pixel SP1a of the first red pixel has the first red color filter CF1, the first sub-pixel SP1b of the second green pixel has the first green color filter CF1, and the first sub-pixel SP1c of the third blue pixel has the first blue color filter CF1. In addition, the second sub-pixel SP2a of the first red pixel has the second red color filter CF2, the second sub-pixel SP2b of the second green pixel has the second green color filter CF2, and the second sub-pixel SP2c of the third blue pixel has the second blue color filter CF2.

[0098] The light-shielding film SM has light-shielding properties, and when viewing the display surface 30a from above, the light-shielding film SM overlaps with the boundaries of the first sub-pixel SP1 and the second sub-pixel SP2 that are adjacent to each other in the first panel direction DP1 and the second panel direction DP2. That is, when viewing the display surface 30a from above, the light-shielding film SM overlaps with the signal line Lb and the scan line Lc. It should be noted that in Figure 9 The diagram of signal line Lb and scan line Lc is omitted. Signal line Lb and scan line Lc are disposed on the main surface 32a of the first substrate 32. Additionally, in... Figure 8In the diagram, the solid line dividing the first sub-pixel SP1 and the second sub-pixel SP2 corresponds to the light-shielding film SM. Furthermore, when viewing the display surface 30a from above, the periphery of the first color filter CF1 and the periphery of the second color filter CF2 overlap with the light-shielding film SM.

[0099] like Figure 10 As shown, the liquid crystal layer 33 is located between the first substrate 32 and the second substrate 34. The liquid crystal layer 33 includes a plurality of liquid crystal molecules LM. When the display surface 30a is viewed from above, the liquid crystal layer 33 overlaps with the display area DA. Specifically, the liquid crystal layer 33 is located between two alignment films AL that are opposite each other. The initial orientation of the liquid crystal molecules LM is determined by the two alignment films AL that are opposite each other.

[0100] In addition, the liquid crystal panel 30 also includes a first polarizing plate 35, a second polarizing plate 36, and a parallax barrier 37.

[0101] A first polarizer 35 is disposed on the lower surface 32b of the first substrate 32. The surface of the first polarizer 35 on the -DP3 side corresponds to the lower surface of the liquid crystal panel 30. Figure 1 As shown, the lower surface of the liquid crystal panel 30 faces the first light source device 10. A first emitted light SL1 is incident on the liquid crystal panel 30 from the lower surface along a first direction W1, and a second emitted light SL2 is incident on the liquid crystal panel 30 from the lower surface along a second direction W2.

[0102] like Figure 10 As shown, the second polarizer 36 is disposed on the upper surface 34a of the second substrate 34. The transmission axis of the second polarizer 36 is orthogonal to the transmission axis of the first polarizer 35. The surface of the second polarizer 36 on the +DP3 side corresponds to the display surface 30a.

[0103] A parallax barrier 37 is disposed between the second substrate 34 and the second polarizing plate 36. The parallax barrier 37 is plate-shaped. The parallax barrier 37 is disposed in the second substrate 34 on the opposite side (upper surface 34a) of the surface (lower surface 34b) opposite to the surface (lower surface 34b) of the first color filter CF1 and the second color filter CF2. The parallax barrier 37 has a plurality of openings 37a and light-blocking portions 37b.

[0104] The opening 37a allows light traveling along the first direction W1 in the light transmitted through the first color filter CF1 of the first sub-pixel SP1 to pass through. The first direction W1 is... Figure 10 It is shown in solid lines. Additionally, the opening 37a allows light traveling along the second direction W2 in the light transmitted through the second color filter CF2 of the second sub-pixel SP2 to pass through. The second direction W2 is... Figure 10 It is shown in dashed lines.

[0105] Figure 11 for Figure 10 The top view of the parallax barrier 37 shown. Figure 11 In the diagram, the first sub-pixel SP1 and the second sub-pixel SP2 are shown with dashed lines. For example... Figure 10 , 11 As shown, when viewing the display surface 30a from above, multiple openings 37a overlap with the first color filter CF1 of the first sub-pixel SP1 and the second color filter CF2 of the second pixel P2, which are adjacent to each other in the row direction. Figure 11 As shown in the top view, multiple openings 37a overlap with the -DP1 side of the first color filter CF1 and the +DP1 side of the second color filter CF2, respectively.

[0106] In addition, such as Figure 11 As shown, when viewed from above, the multiple openings 37a are arranged along the row direction. Furthermore, when viewed from above, the multiple openings 37a are arranged in a Z-shape along the column direction.

[0107] Figure 10 , 11 The light-shielding portion 37b shown is formed of a material with high light absorption (e.g., metallic chromium (Cr), chromium oxide (CrO2), resin, etc.). The light-shielding portion 37b blocks light traveling along the second direction W2 from the light transmitted through the first color filter CF1 of the first sub-pixel SP1. Additionally, the light-shielding portion 37b blocks light traveling along the first direction W1 from the light transmitted through the second color filter CF2 of the second sub-pixel SP2.

[0108] In addition, such as Figure 7 As shown, the first substrate 32 has an exposed portion E that is exposed from the second substrate 34 when viewed from above. The exposed portion E is located on the -DP2 side further than the second substrate 34 when viewed from above. Furthermore, an IC chip Ti, including a driving circuit 31, is disposed on the upper surface of the exposed portion E. The surface of the exposed portion E on the +DP3 side is part of the main surface 32a of the first substrate 32.

[0109] Next, the operation of display device 1 will be explained.

[0110] like Figure 1 As shown, the first light source device 10 emits a first emitted light SL1 towards the liquid crystal panel 30 along the first direction W1. Additionally, the second light source device 20 emits a second emitted light SL2 towards the liquid crystal panel 30 along the second direction W2.

[0111] Figure 10 When the liquid crystal panel 30 shown receives an image signal sent from an external device, it will display the first image G1 and the second image G2 in the display area DA, as described below.

[0112] The image signal includes the grayscale of a first sub-pixel SP1 corresponding to the first image G1 and the grayscale of a second sub-pixel SP2 corresponding to the second image G2. As described above, the first sub-pixel signal representing the grayscale of the first sub-pixel SP1 is output to the first sub-pixel SP1, and the second sub-pixel signal representing the grayscale of the second sub-pixel SP2 is output to the second sub-pixel SP2.

[0113] A voltage corresponding to the grayscale represented by the first sub-pixel signal is applied to the liquid crystal layer 33 corresponding to the first sub-pixel SP1, causing the liquid crystal molecules LM to tilt. The degree of tilt of the liquid crystal molecules LM varies according to the grayscale represented by the first sub-pixel signal. The first emitted light SL1 and the second emitted light SL2 transmitted through the liquid crystal layer 33 corresponding to the first sub-pixel SP1 are modulated to the grayscale represented by the first sub-pixel signal. Further, the first emitted light SL1 and the second emitted light SL2 transmitted through the liquid crystal layer 33 corresponding to the first sub-pixel SP1 are colored by the first color filter CF1. The first emitted light SL1 and the second emitted light SL2 transmitted through the liquid crystal panel 30 via the first color filter CF1 correspond to the first image G1.

[0114] The second emitted light SL2, which is the first emitted light SL1 and the second emitted light SL2 that have passed through the first color filter CF1, travels along the second direction W2 and is blocked by the light-shielding part 37b. Therefore, the second emitted light SL2 that has passed through the first color filter CF1 cannot be visually confirmed.

[0115] On the other hand, the first emitted light SL1, which has passed through the first color filter CF1, travels along the first direction W1 and through the opening 37a of the parallax barrier 37, and is emitted outward from the display surface 30a. Hereinafter, the first emitted light SL1 emitted from the display surface 30a will be referred to as the third emitted light SL3.

[0116] The third emitted light SL3 corresponds to the first image G1. The third emitted light SL3 propagates toward the light-transmitting body 2 along the first direction W1 (see reference). Figure 1 Therefore, the liquid crystal panel 30 modulates the first emitted light SL1 into a third emitted light SL3 corresponding to the first image G1, and emits it toward the first direction W1 in a manner toward the light-transmitting body 2.

[0117] Furthermore, a voltage corresponding to the grayscale represented by the second sub-pixel signal is applied to the liquid crystal layer 33 corresponding to the second sub-pixel SP2, causing the liquid crystal molecules LM to tilt. The degree of tilt of the liquid crystal molecules LM varies according to the grayscale represented by the second sub-pixel signal. The first emitted light SL1 and the second emitted light SL2 transmitted through the liquid crystal layer 33 corresponding to the second sub-pixel SP2 are modulated to the grayscale represented by the second sub-pixel signal. Furthermore, the first emitted light SL1 and the second emitted light SL2 transmitted through the liquid crystal layer 33 corresponding to the second sub-pixel SP2 are colored by the second color filter CF2. The first emitted light SL1 and the second emitted light SL2 transmitted through the liquid crystal panel 30 via the second color filter CF2 correspond to the second image G2.

[0118] The first emitted light SL1, which passes through the second color filter CF2, travels along the first direction W1 and is blocked by the light-shielding part 37b. Therefore, the first emitted light SL1, which passes through the second color filter CF2 and travels along the first direction W1, cannot be visually confirmed.

[0119] On the other hand, the second emitted light SL2, which is the first emitted light SL1 and the second emitted light SL2 transmitted through the second color filter CF2, travels along the second direction W2 and passes through the opening 37a of the parallax barrier 37, and is emitted outward from the display surface 30a. In other words, the second emitted light SL2 can be visually confirmed as the second image G2. That is, the liquid crystal panel 30 modulates the second emitted light SL2 and displays the second image G2 on the display surface 30a.

[0120] Thus, the parallax barrier 37 allows the first emitted light SL1 transmitted through the first sub-pixel SP1 to pass through, and allows the second emitted light SL2 transmitted through the second sub-pixel SP2 to pass through, while blocking the second emitted light SL2 transmitted through the first sub-pixel SP1 and the first emitted light SL1 transmitted through the second sub-pixel SP2. Due to the parallax barrier 37, the viewing angles of the first image G1 and the second image G2 are different.

[0121] Figure 1 The observer M can directly visually confirm the second image G2 through the display surface 30a. However, the observer M cannot directly visually confirm the first image G1 through the display surface 30a.

[0122] The third emitted light SL3 from the display surface 30a travels along the first direction W1 toward the light-transmitting body 2 and is projected through the light-transmitting body 2. An observer M, whose line of sight Lv is directed toward the third emitted light SL3 projected onto the light-transmitting body 2, visually confirms the first image G1 as a virtual image VG.

[0123] Figure 12This is a diagram showing the brightness distribution of the first emitted light SL1 and the second emitted light SL2. Figure 12 The vertical axis shown represents brightness. Figure 12 The horizontal axis shown represents the viewing angle along the first panel direction DP1. A viewing angle of 0° refers to observing the display surface 30a of the liquid crystal panel 30 along the third panel direction DP3.

[0124] Angle θt is the angle between the third panel direction DP3 and the first direction W1, and angle θa is the angle between the third panel direction DP3 and the second direction W2 (refer to...). Figure 1 Furthermore, the brightness and diffusion of the first emitted light SL1 are equal to those of the third emitted light SL3.

[0125] As described above, the brightness of the first emitted light SL1 (the third emitted light SL3) is higher than the brightness of the second emitted light SL2. Therefore, in the display device 1, the visual confirmability of the virtual image VG corresponding to the first emitted light SL1 (the third emitted light SL3) can be further improved. In addition, the observer M can visually confirm the second image G2 with an appropriate brightness.

[0126] Furthermore, as mentioned above, the diffusion degree of the second emitted light SL2 is greater than that of the first emitted light SL1 (and the third emitted light SL3). Therefore, the viewing angle of the second image G2 corresponding to the second emitted light SL2 is greater than the viewing angle of the virtual image VG corresponding to the first emitted light SL1. Thus, the observer M can appropriately visually confirm the second image G2.

[0127] Furthermore, by adjusting the diffusion degree of the first emitted light SL1 and the second emitted light SL2, the viewing angle of the first image G1 corresponding to the first emitted light SL1 and the viewing angle of the second image G2 corresponding to the second emitted light SL2 can be made to not overlap. Thus, visual confirmation (so-called crosstalk) can be suppressed when the observer M observes the display surface 30a from between the first panel direction DP1 and the second panel direction DP2, in a state where the first image G1 and the second image G2 overlap.

[0128] Figure 13 This is a cross-sectional view of the second light source device 20 included in the display device 1 according to a variation of the first embodiment of this disclosure. Figure 14 yes Figure 13 A cross-sectional view of the optical element 24 and the second optical element 127 shown.

[0129] In the display device 1 according to a variation of this first embodiment, the second light source device 20 further includes a second optical element 127. The second optical element 127 receives second light L2 emitted from the optical element 24 and refracts the second light L2 into parallel light before it exits. The second optical element 127 is disposed between the optical element 24 and the diffuser 25. The second optical element 127 has a plate-shaped third base 127a and a plurality of third prism portions 127b. The third base 127a and the plurality of third prism portions 127b are integral.

[0130] Multiple third prism sections 127b are disposed in the surface of the third base 127a on the -DL3 side. Second light L2 emitted from the optical element 24 is directly incident on the multiple third prism sections 127b. The multiple third prism sections 127b have a triangular cross-section and extend along the first light source direction DL1, and are disposed along the second light source direction DL2 with their base edges B3 adjacent to each other.

[0131] The cross-sectional shape of the third prism portion 127b is an isosceles triangle. That is, in the cross-sectional shape of the third prism portion 127b, the two base angles are equal to each other. In addition, these two base angles are defined such that the second light L2 is refracted through the third prism portion 127b into DL3 along the direction of the third light source. It should be noted that the third prism portion 127b can also be disposed on the surface of the third base portion 127a on the +DL3 side.

[0132] <Second Implementation>

[0133] Next, regarding the display device 1 according to the second embodiment of this disclosure, the differences from the display device 1 of the first embodiment described above will be explained.

[0134] Figure 15 This diagram illustrates the structure of the second light source device 220 included in the display device 1 according to the second embodiment of this disclosure. The structure of the second light source device 220 of the display device 1 according to the second embodiment is different from the structure of the second light source device 20 of the display device 1 according to the first embodiment described above.

[0135] The second light source device 220 in the second embodiment is a direct-lit backlight. The second light source device 220 includes a plurality of second light emitters 21, a plurality of third lenses 228, optical elements 224, a diffuser 25, and a prism sheet 26.

[0136] The second light emitter 21 emits second light L2 in the same manner as the second light emitter 21 in the first embodiment described above. In this second embodiment, a plurality of second light emitters 21 are arranged in a row along the first light source direction DL1. It should be noted that the plurality of second light emitters 21 may also be arranged in a row along a direction inclined to the first light source direction DL1. The second light emitters 21 emit second light L2 toward the third lens 228. It should be noted that in Figure 15 In this case, there are two second light-emitting bodies 21, but the number of second light-emitting bodies 21 is not limited to two.

[0137] The third lens 228 is a diffusion lens disposed between the second light emitter 21 and the optical element 224 to diffuse the second light L2. The number of third lenses 228 is equal to the number of second light emitters 21. One third lens 228 overlaps with one second light emitter 21 in the third light source direction DL3. The third lens 228 diffuses the second light L2 emitted from the second light emitter 21 in the first light source direction DL1 and the second light source direction DL2, respectively, and emits it towards the optical element 224.

[0138] An optical element 224 is disposed between the prism sheet 26 and the second light emitter 21. Specifically, the optical element 224 is disposed between the prism sheet 26 and the third lens 228. The optical element 224 receives the second light L2 emitted from the third lens 228 and refracts the second light L2 into parallel light along the direction DL3 of the third light source before it is emitted. The optical element 224 includes a plurality of fourth lenses 224a.

[0139] The fourth lens 224a is a so-called collimating lens. The number of fourth lenses 224a is equal to the number of second light emitters 21. One fourth lens 224a overlaps with one third lens 228 in the third light source direction DL3. It should be noted that the fourth lens 224a can also be a Fresnel lens. The second light L2 emitted from the fourth lens 224a travels along the third light source direction DL3 and is incident on the diffuser 25.

[0140] The diffuser 25 diffuses the second light L2 in the same way as the diffuser 25 in the first embodiment described above. The second light L2 emitted from the diffuser 25 is incident on the prism sheet 26.

[0141] The prism sheet 26, like the prism sheet 26 in the first embodiment described above, refracts the second light L2 along the second direction W2 and emits it as the second outgoing light SL2. Viewing the prism sheet 26 from above refers to viewing the second light source device 220 along the third light source direction DL3. In the second light source device 220 of this second embodiment, when viewing the prism sheet 26 from above, the prism sheet 26, the optical element 224, and the second light emitter 21 overlap each other.

[0142] It should be noted that the second light source device 220 may also not have a third lens 228.

[0143] The preferred embodiments of this disclosure have been described above, but this disclosure is not limited to such embodiments. The disclosed embodiments are merely examples, and various modifications can be made without departing from the spirit of this disclosure. Appropriate modifications made without departing from the spirit of this disclosure are naturally within the technical scope of this disclosure.

[0144] For example, the first light source device 10 can also be a side-lit backlight. In this case, the first light source device 10 can be configured in the same way as the second light source device 20.

[0145] Alternatively, the second light source devices 20 and 220 may not have a diffuser plate 25.

[0146] In addition, the brightness of the second emitted light SL2 can be equal to or lower than that of the first emitted light SL1.

[0147] In addition, the diffusion degree of the second emitted light SL2 can be equal to or less than that of the first emitted light SL1.

[0148] Figure 16 This diagram illustrates the configuration of the first sub-pixel SP1 and the second sub-pixel SP2 in the liquid crystal panel 30 of the display device 1 according to various embodiments of the present disclosure.

[0149] In this variant, the first pixel P1 and the second pixel P2 are configured along the row direction (first panel direction DP1) and the column direction (second panel direction DP2), respectively. In the row direction, if you look at the first pixel P1, you will find that the first sub-pixel SP1a of the first pixel, the first sub-pixel SP1c of the third pixel, and the first sub-pixel SP1b of the second pixel are configured repeatedly in this order. Similarly, in the row direction, if you look at the second pixel P2, you will find that the second sub-pixel SP2b of the second pixel, the second sub-pixel SP2a of the first pixel, and the second sub-pixel SP2c of the third pixel are configured repeatedly in this order.

[0150] Furthermore, the first sub-pixel SP1 and the second sub-pixel SP2 are arranged alternately along the row direction. That is, in the row direction, the first sub-pixel SP1 and the second sub-pixel SP2 are adjacent to each other. Specifically, in the row direction, the first sub-pixel SP1a of the first is adjacent to at least one of the second sub-pixel SP2b of the second and the second sub-pixel SP2c of the third. In addition, in the row direction, the first sub-pixel SP1b of the second is adjacent to at least one of the second sub-pixel SP2c of the third and the second sub-pixel SP2a of the first. And, in the row direction, the first sub-pixel SP1c of the third is adjacent to at least one of the second sub-pixel SP2a of the first and the second sub-pixel SP2b of the second.

[0151] Furthermore, in the row direction, the second sub-pixel SP2a of the first is adjacent to at least one of the first sub-pixel SP1b of the second and the first sub-pixel SP1c of the third. Additionally, in the row direction, the second sub-pixel SP2b of the second is adjacent to at least one of the first sub-pixel SP1c of the third and the first sub-pixel SP1a of the first. Furthermore, in the row direction, the second sub-pixel SP2c of the third is adjacent to at least one of the first sub-pixel SP1a of the first and the first sub-pixel SP1b of the second.

[0152] Furthermore, multiple first sub-pixels SP1 are arranged along the column direction. Specifically, multiple first sub-pixels SP1a are arranged in a state where they are adjacent to each other along the column direction. Multiple first sub-pixels SP1b are arranged in a state where they are adjacent to each other along the column direction. Multiple first sub-pixels SP1c are arranged in a state where they are adjacent to each other along the column direction.

[0153] Furthermore, multiple second sub-pixels SP2 are arranged along the column direction. Specifically, multiple first second sub-pixels SP2a are arranged in a state where they are adjacent to each other along the column direction. Multiple second sub-pixels SP2b are arranged in a state where they are adjacent to each other along the column direction. Multiple third second sub-pixels SP2c are arranged in a state where they are adjacent to each other along the column direction.

[0154] Figure 17 This is a top view of the parallax barrier 337 in the liquid crystal panel 30 of the display device 1 according to various modifications of the embodiments of this disclosure. The parallax barrier 337 of this modification is... Figure 16 The configurations of the first sub-pixel SP1 and the second sub-pixel SP2 shown correspond. The parallax barrier 337 has an opening 337a and a light-shielding portion 337b.

[0155] Figure 17In the diagram, the first sub-pixel SP1 and the second sub-pixel SP2 are shown with dashed lines. In this modified example, when viewed from above, the plurality of openings 337a overlap with a first color filter CF1 and a second color filter CF2 that are adjacent to each other in the row direction. Figure 17 As shown in the top view, similar to the above embodiment, the plurality of openings 337a overlap with the -DP1 side of the first color filter CF1 and the +DP1 side of the second color filter CF2, respectively.

[0156] The opening 337a has a shape that extends along the column direction (second panel direction DP2). Viewed from above, the multiple openings 337a overlap with multiple first sub-pixels SP1 arranged along the column direction and multiple second sub-pixels SP2 arranged along the column direction, respectively. Multiple openings 337a are arranged along the row direction (first panel direction DP1).

[0157] Through such Figure 16 , 17 The first sub-pixel SP1, the second sub-pixel SP2, and the opening 337a are configured as shown. Similar to the embodiment described above, the viewing angles of the first image G1 and the second image G2 are different from each other. Furthermore, even in this modified example, the first sub-pixel SP1 and the second sub-pixel SP2 are disposed within the entire display area DA. Therefore, the first image G1 and the second image G2 are simultaneously displayed in the entire display area DA.

[0158] It should be noted that, in Figure 17 In the parallax barrier 37 shown, the opening 337a can also be formed to overlap with a first sub-pixel SP1 and a second sub-pixel SP2 in the column direction when viewed from above. In this case, multiple openings 337a are arranged along the row direction (first panel direction DP1) and the column direction (second panel direction DP2), respectively.

[0159] Furthermore, other effects resulting from the manner described in this embodiment are clear from the description in this specification, or can be reasonably conceived by those skilled in the art, and are of course understood to be due to this disclosure.

[0160] Explanation of reference numerals in the attached figures

[0161] 1: Display device; 2: Light-transmitting body; 10: First light source device; 20: Second light source device; 21: Second light-emitting body (light source); 22: Light guide body; 22a: Light guide body base; 22a1: First side plate (side plate); 22a2: Second side plate (side plate); 24: Optical element; 24a: First base (base); 24b: First prism part (prism); 25: Diffuser; 26: Prism sheet; 30: Liquid crystal panel; 30a: Display surface; 224a: Fourth lens; G1: First image; G2: Second image; L1: First light; L2: Second light (light source light); SL1: First emitted light; SL2: Second emitted light; SL3: Third emitted light; W1: First direction; W2: Second direction

Claims

1. A display device comprising: The first light source device emits first emitted light along a first direction; The second light source device emits a second emitted light along a second direction, which is different from the first direction; as well as The liquid crystal panel is used for the incident light of the first emitted light and the second emitted light. The liquid crystal panel modulates the first emitted light into a third emitted light corresponding to the first image, and emits it toward the first direction in a manner that is toward the light-transmitting body. It also modulates the second emitted light to display the second image on the display surface. The second light source device includes: light source; An optical element that allows light emitted from the light source to enter the light source and makes the light source light parallel; as well as A prism sheet refracts the light emitted from the optical element into the second direction and emits it as the second emitted light.

2. The display device according to claim 1, wherein, The second light source device further includes a light guide having a side plate surface for the light source to be incident on, and directing the light source incident from the side plate surface toward the optical element.

3. The display device according to claim 2, wherein, The optical element comprises: The plate-like base; and Multiple prisms are disposed at the base and refract the light emitted from the light guide into parallel light.

4. The display device according to claim 1, wherein, When viewed from above, the prism sheet, the optical element, and the light source overlap each other. The optical element is disposed between the prism sheet and the light source.

5. The display device according to claim 4, wherein, The optical element has multiple collimating lenses.

6. The display device according to claim 1, wherein, The second light source device also includes a diffuser plate disposed between the optical element and the prism sheet, which diffuses the light emitted from the optical element.

7. The display device according to claim 1, wherein, The brightness of the first emitted light is higher than that of the second emitted light.

Images