Display device

Abstract

The present embodiment includes: a display unit emitting a first image to a first area among a plurality of areas and emitting a second image to a second area among the plurality of areas; a first prism reflecting the first image emitted through the first area; and a second prism reflecting the second image emitted through the second area and transmitting through the first image reflected from the first prism, wherein the first image and the second image are displayed in an overlapping manner.

Description

Display device

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

[0002] A display device is an output device that visually displays information for visual or three-dimensional reception, storage, and transmission.

[0003] The display device is installed in the vehicle and can visually convey information to the occupants.

[0004] Korean Registered Patent Publication No. 10-2664395 (published on May 8, 2024) discloses a transparent display device using a prism, and the transparent display device includes: a display element; an optical coupler that emits a combined image by combining a first image from the display element and a second image from a different path from the first image; and a noise reduction prism disposed between the display element and the optical coupler, which path-converts effective light of the first image within a predetermined angle range into a direction incident on the optical coupler, and path-converts noise light within the remaining angle range into a direction not incident on the optical coupler.

[0005] The present embodiment is to provide a display device that is simple in structure, minimizes volume, and is capable of realizing three-dimensional stereoscopic images.

[0006] The present embodiment provides a display device capable of providing a three-dimensional floating image without a sense of incongruity caused by a bezel.

[0007] A display device according to the present embodiment includes: a display unit that emits a first image to a first area among a plurality of areas and emits a second image to a second area among a plurality of areas; a first prism that reflects the first image emitted through the first area; and a second prism that reflects the second image emitted through the second area and transmits the first image reflected from the first prism, and displays the first image and the second image superimposed.

[0008] The first prism may include a first incident surface into which a first image emitted through a first region is incident; a first inclined surface that reflects the first image incident on the first incident surface to a second prism; and a second inclined surface into which the first image reflected from the first inclined surface is emitted.

[0009] The first slope and the second slope can be separated.

[0010] The first inclined plane and the second inclined plane can be parallel.

[0011] The first inclined plane and the first incident plane may be at an acute angle.

[0012] The second inclined plane and the first incident plane may be obtuse.

[0013] The second prism may include a second incident surface into which a second image emitted through a second region is incident; a third inclined surface into which a first image reflected from a first inclined surface is transmitted and which reflects the second image incident on the second incident surface; and an output surface into which the second image reflected from the third inclined surface and the first image transmitted from the second inclined surface are emitted.

[0014] The third slope can be parallel to the first slope.

[0015] The third inclined plane and the second incident plane can be at an acute angle.

[0016] The acute angle can be 40° to 50°.

[0017] The transmittance of the third inclined surface may be 40% to 50%.

[0018] The light absorption rate of the third inclined surface may be less than 10%.

[0019] The polarization deviation of the third inclined plane may be less than 6%.

[0020] The second slope and the third slope can be bonded by a bond.

[0021] The refractive index of the bond can be 1.46 to 1.56.

[0022] The display device may further include a damping member that covers the display unit and on which the first prism and the second prism are seated.

[0023] According to the present embodiment, a three-dimensional stereoscopic image can be realized with a simple structure of a display unit, a first prism, and a second prism, and the configuration is simple and the volume can be minimized.

[0024] In addition, since the first image and the second image are viewed through a prism, there is no sense of incongruity due to the mechanical bezel, and a three-dimensional floating image with a sense of distance can be displayed.

[0025] In addition, the second inclined surface of the first prism and the third inclined surface of the third prism are bonded by a bond, so that the first prism and the second prism can be integrated, and the assembly of the display device is easy.

[0026] In addition, since the refractive index of the bond is 1.46 to 1.56, which is similar to the refractive index of the first prism, the straightness of the light can be ensured.

[0027] In addition, the display unit can be protected by the damping member, and damage caused when the prism and the display unit come into direct contact can be minimized.

[0028] FIG. 1 is a perspective view of an example of a display device according to the present embodiment,

[0029] FIG. 2 is a cross-sectional view of an example of a display device according to the present embodiment,

[0030] FIG. 3 is a drawing showing an optical path of an example of a display device according to the present embodiment.

[0031] FIG. 4 is a side view showing a first prism and a second prism of an example of a display device according to the present embodiment.

[0032] FIG. 5 is a perspective view showing an optical path of an example of a display device according to the present embodiment,

[0033] FIG. 6 is a plan view showing the output surface of the display unit illustrated in FIG. 3,

[0034] FIG. 7 is a diagram showing the first image and the second image of an example of a display device according to the present embodiment when reflected by a prism,

[0035] FIG. 8 is a diagram showing when a first image and a second image of an example of a display device according to the present embodiment are superimposed.

[0036] FIG. 9 is a perspective view of another example of a display device according to the present embodiment,

[0037] FIG. 10 is a cross-sectional view of another example of a display device according to the present embodiment,

[0038] FIG. 11 is a perspective view showing a display unit and a prism of another example of a display device according to the present embodiment.

[0039] FIG. 12 is a figure showing an optical path of another example of a display device according to the present embodiment.

[0040] FIG. 13 is a bottom view showing the output surface of the display unit illustrated in FIG. 12.

[0041] Specific embodiments of the present invention will be described in detail below with reference to the drawings.

[0042] FIG. 1 is a perspective view of an example of a display device according to the present embodiment, FIG. 2 is a cross-sectional view of an example of a display device according to the present embodiment, FIG. 3 is a diagram showing the light path of an example of a display device according to the present embodiment, FIG. 4 is a side view showing the first prism and the second prism of an example of a display device according to the present embodiment, and FIG. 5 is a perspective view showing the light path of an example of a display device according to the present embodiment.

[0043] One example of a display device may include a housing (1), a display unit (2), and a prism (3).

[0044] The housing (1) can form the exterior of an example of a display device. The housing (1) can be placed outside the display unit (2) and the prism (3). The housing (1) can protect the display unit (2) and the prism (3).

[0045] The housing (3) may be composed of a combination of multiple members.

[0046] The housing (3) may include a lower housing (4) and an upper housing (5).

[0047] A lower space (41) can be formed inside the lower housing (4).

[0048] The lower housing (4) may include a lower plate (42), an upper plate (43), a front body (44), and a perimeter body (45).

[0049] The upper plate (43) can be spaced apart from the lower plate (42) in the vertical direction (Z).

[0050] A power unit (46) that supplies power to the display unit (2) can be accommodated in the lower space (41).

[0051] A display unit mounting portion (47) on which a display unit (2) is mounted may be formed in the lower housing (4).

[0052] The display unit mounting portion (47) may be formed on the upper plate (43) of the lower housing (4). The display unit mounting portion (47) may be a display unit receiving portion that accommodates the display unit (2).

[0053] The upper housing (5) can be placed on the upper side of the lower housing (4).

[0054] An upper space (51) can be formed inside the upper housing (5).

[0055] The upper housing (5) may include a top cover portion (52).

[0056] The top cover part (52) can cover the upper surface of the prism (3).

[0057] The upper housing (5) may include a pair of side cover portions (53)(54).

[0058] A pair of side cover portions (53)(54) may include a left cover portion (53) and a right cover portion (54).

[0059] The left cover portion (53) can be extended from the left end of the top cover portion (52) to the left side of the lower housing (4).

[0060] The left cover part (53) can be concave.

[0061] The right cover portion (54) can be extended from the right end of the top cover portion (52) to the right side of the lower housing (4).

[0062] The right cover part (54) can be concave.

[0063] The upper housing (5) may further include a rear cover portion (55).

[0064] The rear cover portion (55) can be extended from the rear end of the top cover portion (52) to the perimeter body (45) of the lower housing (4).

[0065] The upper housing (5) may further include a front cover portion (56).

[0066] An opening (57) may be formed in the upper housing (5).

[0067] An opening (57) may be formed on the front of the upper housing (5). The opening (57) may be opened in the front-rear direction (X) in the front cover portion (56).

[0068] The display unit (2) can emit an image. The display unit (2) can output an image toward the prism (3).

[0069] The display unit (2) is an image generating unit and may be a display device capable of generating image light by controlling an electrical signal, such as an LCD (Liquid Crystal Display) or an OLED (Organic Light Emitting Diode) panel.

[0070] The display unit (2) can be positioned horizontally or nearly horizontally inside the housing (1). The display unit (2) can emit an image in an upward direction.

[0071] The display unit (2) can be seated on the display unit mounting portion (47) formed in the lower housing (4).

[0072] The display unit (2) may include a plurality of regions (A1) (A2). The plurality of regions (A1) (A2) may be formed on the output surface of the display unit (2).

[0073] The output surface can be formed on the upper surface of the display unit (2).

[0074] Multiple areas (A1) and (A2) can be divided in the front-rear direction (X) on the output surface of the display unit (2).

[0075] Multiple regions (A1)(A2) may include a first region (A1) and a second region (A2).

[0076] The first region (A1) may be a region facing the first prism (6) among the prisms (3).

[0077] The first region (A1) may be located behind the second region (A2).

[0078] The second region (A2) may be a region facing the second prism (7) among the prisms (3).

[0079] The display unit (2) can emit a first image (G1) to the first area (A1) among the multiple areas (A1) (A2).

[0080] The display unit (2) can emit a second image (G2) to the second area (A2) among the multiple areas (A1) (A2).

[0081] The display unit (2) can emit a first image (G1) through a first area (A1) and emit a second image (G2) through a second area (A2).

[0082] The display unit (2) can simultaneously emit a first image (G1) and a second image (G2). That is, the display unit (2) can emit the first image (G1) through the first area (A1) and emit the second image (G2) through the second area (A2).

[0083] The first image (G1) and the second image (G2) can be the same image, or they can be different images.

[0084] The first image (G1) and the second image (G2) may each include images of different types.

[0085] Either one of the first image (G1) and the second image (G2) may include an image such as a drawing, and the other of the first image (G1) and the second image (G2) may include an image such as a number or a character.

[0086] If the first image (G1) includes an image such as a picture, the second image (G2) may include an image such as a number or a character, and if the first image (G1) includes an image such as a number or a character, the second image (G2) may include an image such as a picture.

[0087] The display unit (2) can control the intensity (luminance) of the light source for each area (A1) (A2). The display unit (2) can output a first image (G1) with a first luminance to the first area (A1) and a second image (G2) with a second luminance to the second area (A2). The first luminance may be the same as or different from the second luminance.

[0088] The display unit (2) may be provided as one unit or as multiple units.

[0089] One example of a display unit (2) is that a number of display units can output a first image (G1) incident on the first prism (6) and a second image (G2) incident on the second prism (7) together.

[0090] Another example of the display unit (2) may be equal to the number of prisms (3). Another example of the display unit (2) may include a first display unit that outputs a first image (G1) to the incident surface (61) of a first prism (6), and a second display unit that outputs a second image (G2) to the incident surface (71) of a second prism (7).

[0091] The present embodiment is not limited to the number of display units (2), and various variations are possible.

[0092] The prism (3) can reflect images (G1, G2) emitted from the display unit (2).

[0093] In order to increase the efficiency of the first image (G1) and the second image (G2) being incident on the prism (3) (i.e., incident efficiency), the prism (3) and the display unit (2) can be arranged in the vertical direction (Z).

[0094] The prism (3) can be placed on the upper side of the display unit (2).

[0095] The prism (2) may have an incident surface facing the display unit (2). The incident surface of the prism (2) may be the lower surface of the prism (2).

[0096] The prism (2) may have an exit surface facing forward. The exit surface may be the front surface of the prism (3). The exit surface may be perpendicular to the incident surface.

[0097] Multiple prisms (3) may be provided. Each of the multiple prisms (3) may include an incident surface. Each of the multiple prisms (3) may include an inclined surface that changes the light path of the image.

[0098] Multiple prisms (3) may include a first prism (6); and a second prism (7).

[0099] The display unit (2) can emit multiple images (G1) (G2) along the incident surfaces (61) (71) of each of the multiple prisms (3). The display unit (2) can output the first image (G1) and the second image (G2) along the incident surface (61) of the first prism (6) and the incident surface (71) of the second prism (7).

[0100] One example of a display device can display multiple images (G1) (G2) in a superimposed manner.

[0101] The first prism (6) can reflect the first image (G1) emitted through the first area (A1). The first prism (6) can reflect the first image (G1) emitted through the first area (A1) to the opening (57).

[0102] The first image (G1) reflected from the first prism (6) can pass through the second prism (7).

[0103] The first image (G1) reflected from the first prism (6) can be emitted through the opening (57) after passing through the second prism (7).

[0104] The second prism (7) can reflect the second image (G2) emitted through the second area (A2). The second prism (7) can reflect the second image (G2) emitted through the second area (A2) to the opening (57).

[0105] The first image (G1) reflected from the first prism (6) and the second image (G2) reflected from the second prism (7) can be displayed together, and the first image (G1) and the second image (G2) can be superimposed.

[0106] The first image (G1) and the second image (G2) can be emitted together forward, and the display device can display the first image (G1) and the second image (G2) in a superimposed manner.

[0107] The first prism (6) may include a first incident surface (61); a first inclined surface (62); and a second inclined surface (63).

[0108] The first incident surface (61) may face the exit surface of the display unit (2). The first incident surface (61) may face the first region (A1) among the exit surfaces of the display unit (2).

[0109] A first image (G1) emitted through a first region (A1) can be incident on the first incident surface (61).

[0110] The first incident surface (61) may be the bottom surface of the first prism (6).

[0111] The first image (G1) incident on the first incident surface (61) can be formed on the first inclined surface (62).

[0112] The first inclined surface (62) can reflect the first image incident on the first incident surface (61) to the second prism (7). The first inclined surface (62) can change the light path. The first inclined surface (62) can change the direction of the first image (G1). The first inclined surface (62) can change the light path in the up-down direction (Z) to the forward-backward direction (X). The first inclined surface (62) can change the first image (G1) incident in the upward direction to the forward direction.

[0113] The first inclined surface (62) may be the inclined back surface of the first prism (6).

[0114] The first inclined plane (62) and the first incident plane (61) may be at an acute angle (θ1).

[0115] The first image (G2) reflected from the first inclined surface (62) can be emitted to the second inclined surface (63).

[0116] The second inclined plane (63) and the first incident plane (61) may be obtuse angles (θ2).

[0117] The first inclined surface (62) and the second inclined surface (63) may be spaced apart from each other. The first inclined surface (62) and the second inclined surface (63) may be spaced apart in the front-rear direction (X).

[0118] One example of a display device can provide a sense of depth equal to the distance between the first inclined surface (62) and the second inclined surface (63).

[0119] The first inclined surface (62) and the second inclined surface (63) may be parallel. The second inclined surface (63) may be inclined at the same angle as the first inclined surface (62).

[0120] The second inclined surface (63) can be inclined toward the front lower side.

[0121] The second inclined surface (63) may be the inclined front surface of the first prism (6).

[0122] The second prism (7) may include a second incident surface (71); a third inclined surface (72); and an exit surface (73).

[0123] The second incident surface (71) may face the exit surface of the display unit (2). The second incident surface (71) may face the second region (A2) among the exit surfaces of the display unit (2).

[0124] A second image (G2) emitted through the second region (A2) can be incident on the second incident surface (71).

[0125] The second incident surface (71) may be the bottom surface of the second prism (7).

[0126] The second image (G2) incident on the second incident surface (71) can be formed on the third inclined surface (72).

[0127] The third inclined surface (72) can reflect the second image (G2) incident on the second incident surface (71). The third inclined surface (72) can change the light path. The third inclined surface (72) can change the direction of the second image (G2). The third inclined surface (72) can change the light path in the up-down direction (Z) to the forward-backward direction (X). The third inclined surface (72) can change the second image (G2) incident in the upward direction to the forward direction.

[0128] The third inclined surface (72) may be the inclined back surface of the second prism (7).

[0129] The third inclined surface (72) may be parallel to the first inclined surface (62). The third inclined surface (72) may be parallel to the second inclined surface (63). The third inclined surface (72) and the second inclined surface (63) may be inclined at the same angle.

[0130] The third slope (72) can be integrated with the second slope (63).

[0131] The third inclined plane (72) and the second incident plane (71) may be acute angles (θ1).

[0132] The second image (G2) reflected from the third inclined surface (72) can be emitted to the emission surface (73).

[0133] The exit surface (73) and the second incident surface (71) can be orthogonal.

[0134] The exit surface (73) and the third inclined surface (72) may be spaced apart from each other. The exit surface (73) and the third inclined surface (72) may be spaced apart in the front-rear direction (X).

[0135] The effect of the layered floating display can be optimized according to the angle, reflection area, and reflectivity of the first inclined surface (62).

[0136] The effect of the layered floating display can be optimized according to the angle of the second inclined surface (72), the reflection area (transmittance area), and the reflectivity (transmittance).

[0137] The acute angle (θ1) may be 40° to 50°. A preferred example of the acute angle (θ1) may be 45°.

[0138] The third inclined surface (72) may be a reflective surface that reflects the second image (G2) forward and a transparent surface through which the first image (G1) is transmitted forward.

[0139] The third inclined surface (72) may be a reflective and transparent surface.

[0140] The reflection and transmission surfaces can reflect a second image (G2) in the vertical direction (Z).

[0141] A first image (G1) in the front-rear direction (X) can be transmitted through the reflection and transmission surfaces.

[0142] When the acute angle (θ1) is 45°, the transmittance of the third inclined surface (72) can be 40% to 50%.

[0143] When the acute angle (θ1) is 45°, the light absorption rate of the third inclined surface (72) may be less than 10%.

[0144] When the acute angle (θ1) is 45°, the polarization deviation of the third inclined surface (72) may be less than 6%.

[0145] Visible light with a wavelength of 430 to 670 nm can be transmitted through the third inclined surface (72).

[0146] The first image (G1) reflected from the first inclined surface (61) can pass through the second inclined surface (63) and the third inclined surface (72).

[0147] The second image (G2) reflected from the third inclined surface (72) and the first image (G1) transmitted through the second inclined surface (63) and the third inclined surface (72) can be emitted together through the output surface (73).

[0148] With the first prism (6) and the second prism (7) as described above, the display device may be a layered floating display that displays the first image (G1) and the second image (G2) by stacking them layer by layer.

[0149] That is, the second prism (7) can be configured to transmit the first image (G1) and reflect the second image (G2).

[0150] The display size of the display device can be optimized according to the distance between the display unit (2) and the first inclined surface (62) and the distance between the display unit (2) and the third inclined surface (72).

[0151] The image quality of the display device can be determined by the surface treatment of the first inclined surface (62) and the surface treatment of the third inclined surface (72).

[0152] The first area (A1) may be a first display source, and the second area (A2) may be a second display source.

[0153] The area of ​​the first display source may be the same as the area of ​​the second display source.

[0154] For example, if the left-right length of the first area (A1) is 70 mm and the front-back length of the first area (A1) is 70 mm, the area of ​​the first display source may be 4900 mm and the area of ​​the first inclined surface (62) may be approximately 6929.65 mm.

[0155] If the left-right length of the second area (A2) is 70mm and the front-back length of the second area (A2) is 70mm, the area of ​​the second display source may be 4900mm and the area of ​​the third inclined surface (72) may be 6929.65.

[0156] The angle of the first inclined surface (62), the angle of the third inclined surface (72), the left-right length of the first area (A1), the front-back length of the first area (A1), the left-right length of the second area (A2), and the front-back length of the second area (A2) can be varied as needed, and the display device can be optimized.

[0157] The second prism (7) may include a prism body (74) and a deposition layer (75).

[0158] The prism body (74) can be formed with a slanted back surface, a vertical front surface, and a horizontal bottom surface.

[0159] The second incident surface (71) may be the lower surface of the prism body (74).

[0160] The emission surface (73) may be the front surface of the prism body (74).

[0161] The deposition layer (75) can be deposited on the inclined back surface of the prism body (74), and the deposition layer (75) deposited on the inclined back surface of the prism body (74) can form a third inclined surface (72).

[0162] The first prism (6) and the second prism (7) can be bonded. The first prism (6) and the second prism (7) can be bonded by an optical bond.

[0163] The second inclined surface (63) and the third inclined surface (72) can be bonded by a bond (8).

[0164] The bond (8) can be bonded to the second inclined surface (63) of the first prism (6) and to the deposition layer (75) of the second prism (7).

[0165] The first image (G1) reflected forward by the first inclined surface (62) can pass through the bond (8) and be incident on the deposition layer (75).

[0166] An example of a bond (8) can be an optical bond.

[0167] It is desirable that the required physical properties of the bond (8) have a refractive index similar to that of glass.

[0168] Each of the first prism (6) and the second prism (7) can be glass.

[0169] It is preferable that the refractive index of the bond (8) be the same as or similar to the refractive index of the first prism (6), and in this case, the bond (8) can secure a transmittance similar to that when the first image (G1) passes through the first prism (6).

[0170] The refractive index of the bond (8) may be 1.46 to 1.56. It is preferable that the refractive index of the bond (8) be 1.51.

[0171] When a deposition layer (75) is deposited on the inclined back surface of the prism body (74) and the second inclined surface (62) of the first prism (6) is bonded to the deposition layer (75) with a bond (8), the manufacturing of the prism (3) can be completed and the prism (3) can become a beam splitter.

[0172] One example of a display device may further include a damping member (9).

[0173] The damping member (9) can cover the display unit (2). The damping member (9) can cover the display unit (2) from the upper side of the display unit (2).

[0174] The damping member (9) may be transparent. Examples of the damping member (9) may be a transparent film or a transparent plastic injection molded product.

[0175] The first image (G1) emitted from the display unit (2) can pass through the damping member (9) and then be incident on the first incident surface (61).

[0176] The second image (G2) emitted from the display unit (2) can pass through the damping member (9) and then be incident on the second incident surface (71).

[0177] The prism (3) can be seated on the damping member (9).

[0178] The first prism (6) and the second prism (7) can be seated on the damping member (9).

[0179] The damping member (9) may be a mounting member on which the prism (3) is mounted. The damping member (9) may be a mounting member on which the beam splitter is mounted.

[0180] FIG. 6 is a plan view showing the emission surface of the display unit illustrated in FIG. 3, FIG. 7 is a view when the first image and the second image of an example of a display device according to the present embodiment are reflected by a prism, and FIG. 8 is a view when the first image and the second image of an example of a display device according to the present embodiment are superimposed.

[0181] A display unit (2) of one example of a display device can emit multiple images (G1) (G2) along the incident surfaces (61) (71) of multiple prisms (3). A display unit (2) of one example of a display device can emit a first image (G1) and a second image (G2) together along the incident surfaces of multiple prisms (3).

[0182] As shown in FIG. 6, the display unit (2) may include a first area (A1) located at the rear of the output surface and a second area (A2) located at the front of the first area (A1).

[0183] The distance between the second area (A2) and the opening (57) may be shorter than the distance between the first area (A1) and the opening (57).

[0184] As shown in FIG. 6, the display unit (2) can emit a first image (G1) through a first area (A1) and emit a second image (G2) through a second area (A2).

[0185] A first image (G1) emitted through a first area (A1) of a display unit (2) can be incident on a first prism (6) and formed on a first inclined surface (62) as shown in FIG. 7, and a second image (G2) emitted through a second area (A2) of a display unit (2) can be incident on a second prism (7) and formed on a third inclined surface (72) of a second prism (7) as shown in FIG. 7.

[0186] The first image (G1) formed on the first inclined surface (62) of the first prism (6) can be inverted vertically with respect to the first image (G1) emitted to the first area (A1) of the display unit (2).

[0187] The second image (G2) formed on the third inclined surface (72) of the second prism (7) can be inverted vertically with the second image (G2) emitted to the second area (A2) of the display unit (2).

[0188] Considering that the first image (G1) and the second image (G2) are vertically inverted, when the display unit (2) outputs, the display unit (2) can display each of the first image (G1) and the second image (G2) by vertically inverting them as shown in FIG. 6.

[0189] The first image (G1) formed on the first inclined surface (62) of the first prism (6) and the second image (G2) formed on the third inclined surface (72) of the second prism (7) can be displayed by overlapping them forward, and can be displayed as a single image as shown in FIG. 8.

[0190] The occupant can see the superimposed image of the first image (G1) and the second image (G2) through the second prism (7).

[0191] The display unit (2) can control the intensity (luminance) of the light source for each area (A1) (A2), and can control the luminance of the first image (G1) reflected by the first inclined surface (62) and the luminance of the second image (G2) reflected by the third inclined surface (72) of the second prism (7).

[0192] FIG. 9 is a perspective view of another example of a display device according to the present embodiment, FIG. 10 is a cross-sectional view of another example of a display device according to the present embodiment, FIG. 11 is a perspective view showing a display unit and a prism of another example of a display device according to the present embodiment, FIG. 12 is a diagram showing a light path of another example of a display device according to the present embodiment, and FIG. 13 is a bottom view showing the emission surface of the display unit shown in FIG. 12.

[0193] Another example of a display device may include a housing (1'), a display unit (2'), and a prism (3').

[0194] The housing (1') can form the exterior of another example of a display device. The housing (1') can be placed outside the display unit (2') and the prism (3'). The housing (1') can protect the display unit (2') and the prism (3').

[0195] The housing (1') may be composed of a combination of multiple members.

[0196] The housing (1') may include a lower housing (4') and an upper housing (5') positioned above the lower housing (4').

[0197] A lower space (41') can be formed inside the lower housing (4').

[0198] The lower housing (4') may include a lower plate (42'), a front body (44'), and a circumference body (45').

[0199] An inner supporter (43') that supports the prism (3') may be formed on the lower plate (42'). The inner supporter (43') may be formed on the upper surface of the lower plate (42').

[0200] The lower space (41') can accommodate a power unit that supplies power to the display unit (2').

[0201] An upper space (51') can be formed inside the upper housing (5').

[0202] The upper housing (5') may include a top cover portion (52').

[0203] The top cover portion (52') can cover the display unit (2').

[0204] The upper housing (5') may include a pair of side cover portions (53')(54').

[0205] A pair of side cover portions (53') and (54') may include a left cover portion (53') extending from the left end of the top cover portion (52') to the left of the lower housing (4'), and a right cover portion (54') extending from the right end of the top cover portion (52') to the right of the lower housing (4').

[0206] The upper housing (5') may further include a rear cover portion (55').

[0207] The rear cover portion (55') can be extended from the rear end of the top cover portion (52') to the perimeter body (45') of the lower housing (4').

[0208] The upper housing (5') may include a control panel (56') on which input units such as buttons are placed.

[0209] An opening (57') may be formed in the upper housing (5').

[0210] An opening (57') can be formed in the control panel (56'). The opening (57) can be opened in the control panel (56') in the forward upward direction (FU).

[0211] The display unit (2') can emit an image. The display unit (2') can emit an image toward the prism (3').

[0212] The display unit (2') is an image generating unit and may be a display device capable of generating image light by controlling an electrical signal, such as an LCD (Liquid Crystal Display) or an OLED (Organic Light Emitting Diode) panel.

[0213] The display unit (2') can be positioned at an angle inside the housing (1'). The display unit (2') can emit an image in the forward downward direction (FL).

[0214] The display unit (2') may include a plurality of regions (A1')(A2'). The plurality of regions (A1')(A2') may be formed on the output surface of the display unit (2').

[0215] The emission surface can be formed on the inclined lower surface (hereinafter referred to as the lower surface) of the display unit (2').

[0216] Multiple regions (A1')(A2') can be divided in the front-rear direction (X) on the output surface of the display unit (2').

[0217] Multiple regions (A1')(A2') may include a first region (A1') and a second region (A2').

[0218] The first region (A1') may be a region facing the first prism (6') among the prisms (3').

[0219] The second region (A2') may be a region facing the second prism (7') among the prisms (3').

[0220] The display unit (2') can emit a first image (G1) to the first area (A1') among the multiple areas (A1') (A2').

[0221] The display unit (2') can emit a second image (G2) to the second area (A2') among the multiple areas (A1') (A2').

[0222] The display unit (2') can emit a first image (G1) through a first area (A1') and emit a second image (G2) through a second area (A2').

[0223] The display unit (2') can simultaneously emit a first image (G1) and a second image (G2). The display unit (2') can emit the first image (G1) through the first area (A1') and emit the second image (G2) through the second area (A2').

[0224] The first image (G1) and the second image (G2) may be the same image, or they may be different images.

[0225] The first image (G1) and the second image (G2) may each include images of different types, and either the first image (G1) or the second image (G2) may include an image such as a drawing, and the other of the first image (G1) and the second image (G2) may include an image such as a number or a character.

[0226] If the first image (G1) includes an image such as a picture, the second image (G2) may include an image such as a number or a character, and if the first image (G1) includes an image such as a number or a character, the second image (G2) may include an image such as a picture.

[0227] The prism (3') can reflect images (G1, G2) emitted from the display unit (2').

[0228] The prism (3') can be placed on the lower front side of the display unit (2').

[0229] The prism (2') may have an incident surface facing the display unit (2'). The incident surface of the prism (2') may be the inclined upper surface (hereinafter referred to as the upper surface) of the prism (3').

[0230] Multiple prisms (3') may be provided. Each of the multiple prisms (3') may include an incident surface. Each of the multiple prisms (3') may include an inclined surface that changes the light path of the image.

[0231] Multiple prisms (3') may include a first prism (6'); and a second prism (7').

[0232] The display unit (2') can emit multiple images (G1)(G2) along the incident surfaces (61')(71') of each of the multiple prisms (3').

[0233] Another example of a display device can display multiple images (G1) (G2) in a superimposed manner.

[0234] The first prism (6') can reflect the first image (G1) emitted through the first region (A1'). The first prism (6') can reflect the first image (G1) emitted through the first region (A1') to the opening (57').

[0235] The first image (G1) reflected from the first prism (6') can pass through the second prism (7').

[0236] The first image (G1) reflected from the first prism (6') can be emitted through the opening (57') after passing through the second prism (7').

[0237] The second prism (7') can reflect the second image (G2) emitted through the second region (A2'). The second prism (7') can reflect the second image (G2) emitted through the second region (A2) to the opening (57').

[0238] The display device can display the first image (G1) and the second image (G2) by overlapping them.

[0239] The first image (G1) reflected from the first prism (6') and the second image (G2) reflected from the second prism (7') can be displayed together, and the first image (G1) and the second image (G2) can be superimposed.

[0240] The first prism (6') may include a first incident surface (61'); a first inclined surface (62'); and a second inclined surface (63').

[0241] The first incident surface (61') may face the exit surface of the display unit (2'). The first incident surface (61') may face the first region (A1') among the exit surfaces of the display unit (2').

[0242] A first image (G1) emitted through a first region (A1') can be incident on the first incident surface (61').

[0243] The first incident surface (61') may be the inclined upper surface (hereinafter referred to as the upper surface) of the first prism (6).

[0244] The first image (G1) incident on the first incident surface (61') can be formed on the first inclined surface (62').

[0245] The first inclined surface (62') can reflect the first image (G1) incident on the first incident surface (61') to the second prism (7'). The first inclined surface (62') can change the light path. The first inclined surface (62') can change the direction of the first image (G1). The first inclined surface (62') can change the light path in the forward lower direction (FL) to the forward upper direction (FU). The first inclined surface (62') can change the first image (G1) incident in the forward lower direction (FL) to the forward upper direction (FU).

[0246] The first inclined surface (62') may be the inclined back surface of the first prism (6') or the bottom surface of the first prism (6').

[0247] The first inclined plane (62') and the first incident plane (61') may be acute angles (θ1).

[0248] The first image (G1) reflected from the first inclined surface (62') can be emitted to the second inclined surface (63').

[0249] The second inclined plane (63') and the first incident plane (61') may be obtuse angles (θ2).

[0250] The first inclined surface (62') and the second inclined surface (63') may be spaced apart from each other. The first inclined surface (62') and the second inclined surface (63') may be spaced apart in the forward upward direction (FU).

[0251] Another example of a display device can provide a sense of depth as much as the distance between the first inclined surface (62') and the second inclined surface (63').

[0252] The first inclined surface (62') and the second inclined surface (63') may be parallel. The first inclined surface (62') and the second inclined surface (63') may be inclined at the same angle.

[0253] The second inclined surface (63') may be the inclined front surface of the first prism (6') or the inclined upper surface of the first prism (6').

[0254] The second prism (7') may include a second incident surface (71'); a third inclined surface (72'); and an exit surface (73').

[0255] The second incident surface (71') may face the exit surface of the display unit (2'). The second incident surface (71') may face the second region (A2') among the exit surfaces of the display unit (2').

[0256] A second image (G2) emitted through the second region (A2') can be incident on the second incident surface (71').

[0257] The second incident surface (71') may be the inclined upper surface (hereinafter referred to as the upper surface) of the second prism (7').

[0258] The second image (G2) incident on the second incident surface (71') can be formed on the third inclined surface (72').

[0259] The third inclined surface (72') can reflect the second image (G2) incident on the second incident surface (71'). The third inclined surface (72') can change the optical path. The third inclined surface (72') can change the direction of the second image (G2). The third inclined surface (72') can change the optical path in the forward lower direction (FL) to the forward upper direction (FU). The third inclined surface (72') can change the second image (G2) incident in the forward lower direction (FL) to the forward upper direction (FU).

[0260] The third inclined surface (72') may be the inclined back surface of the second prism (7') or the bottom surface of the second prism (7').

[0261] The third inclined surface (72') may be parallel to the first inclined surface (62'). The third inclined surface (72') may be parallel to the second inclined surface (63'). The third inclined surface (72') and the second inclined surface (63') may be inclined at the same angle.

[0262] The third inclined surface (72') can overlap with the first inclined surface (62') in the forward upper inclined direction (FU).

[0263] The height of the third slope (72') may differ from the height of the first slope (62'). The height of the third slope (72') may be higher than the height of the first slope (62').

[0264] The third inclined surface (72') and the first inclined surface (62') may be spaced apart in the vertical direction. At least a portion of the third inclined surface (72') may be located above the first inclined surface (62').

[0265] Each of the third inclined surface (72') and the first inclined surface (62') may include an overlap area that overlaps in the vertical direction.

[0266] The third inclined surface (72') may include an overlap area that overlaps with the first inclined surface (62') in the vertical direction and a non-overlap area that does not overlap with the first inclined surface (62') in the vertical direction.

[0267] The first inclined surface (62') may include an overlap area that overlaps with the third inclined surface (72') in the vertical direction and a non-overlap area that does not overlap with the third inclined surface (72') in the vertical direction.

[0268] The third inclined surface (72') can be integrated with the second inclined surface (63').

[0269] The third inclined plane (72') and the second incident plane (71') can be acute angles (θ1).

[0270] The second image (G2) reflected from the third inclined surface (72') can be emitted to the exit surface (73').

[0271] The exit plane (73') and the second incident plane (71') can be orthogonal.

[0272] The exit surface (73') and the third inclined surface (72') may be spaced apart from each other. The exit surface (73') and the third inclined surface (72') may be spaced apart in the forward upward direction (FU).

[0273] The acute angle (θ1) may be 40° to 50°. A preferred example of the acute angle (θ1) may be 45°.

[0274] The third inclined surface (72') may be a reflective surface that reflects the second image (G2) in the forward and upward direction, and may be a transparent surface through which the first image (G1) is transmitted.

[0275] The third inclined surface (72') may be a reflective and transparent surface.

[0276] The second image (G2) in the forward lower direction (FL) can be reflected in the forward upper direction (FU) by the reflection and transmission surface.

[0277] The first image (G1) in the forward upper direction (FU) can pass through the reflection and transmission surfaces.

[0278] When the acute angle (θ1) is 45°, the transmittance of the third inclined surface (72') can be 40% to 50%.

[0279] When the acute angle (θ1) is 45°, the light absorption rate of the third inclined surface (72') may be less than 10%.

[0280] When the acute angle (θ1) is 45°, the polarization deviation of the third inclined surface (72') may be less than 6%.

[0281] Visible light with a wavelength of 430 to 670 nm can be transmitted through the third inclined surface (72').

[0282] That is, the first image (G1) reflected from the first inclined surface (61') can pass through the second inclined surface (63') and the third inclined surface (72').

[0283] The second image (G2) reflected from the third inclined surface (72') and the first image (G1) transmitted through the second inclined surface (63') and the third inclined surface (72') can be emitted together to the emission surface (73').

[0284] The second prism (7') may include a prism body and a deposition layer, as in the second prism (7) of an example of a display device, and the deposition layer may be deposited on the prism body.

[0285] The first prism (6') and the second prism (7') can be bonded. The first prism (6') and the second prism (7') can be bonded by an optical bond, such as the first prism (6) and the second prism (7) of an example of a display device.

[0286] An example of a bond may be an optical bond, such as in a display device, and a detailed description thereof is omitted below to avoid redundancy.

[0287] Another example of a display device may further include a damping member (9').

[0288] The damping member (9') can cover the display unit (2'). The damping member (9) can cover the display unit (2') from the lower side of the display unit (2').

[0289] The damping member (9') may be transparent. Examples of the damping member (9') may be a transparent film or a transparent plastic injection molded product.

[0290] The first image (G1) emitted from the display unit (2') can pass through the damping member (9') and then be incident on the first incident surface (61').

[0291] The second image (G2) emitted from the display unit (2') can pass through the damping member (9') and then be incident on the second incident surface (71').

[0292] The display unit (2') can be seated on the damping member (9').

[0293] A display unit (2') can be seated on the damping member (9').

[0294] The damping member (9') may be a seating member on which the display unit (2') is seated.

[0295] In another example of a display device, the display unit (2') can emit a first image (G1) and a second image (G1) together along the incident surface of a plurality of prisms (3').

[0296] As shown in FIG. 13, the display unit (2') may include a first area (A1') located at the rear of the output surface and a second area (A2') located at the front of the first area (A1').

[0297] The distance between the second area (A2') and the opening (57) may be shorter than the distance between the first area (A1') and the opening (57).

[0298] As shown in FIG. 13, the display unit (2') can emit a first image (G1) through a first area (A1') and emit a second image (G2) through a second area (A2').

[0299] A first image (G1) emitted through the first area (A1') of the display unit (2') can be incident on the first prism (6') and formed on the first inclined surface (62'), and a second image (G2) emitted through the second area (A2') of the display unit (2') can be incident on the second prism (7') and formed on the third inclined surface (72') of the second prism (7').

[0300] The first image (G1) formed on the first inclined surface (62') of the first prism (6') can be horizontally inverted with the first image (G1) emitted to the first area (A1') of the display unit (2').

[0301] The second image (G2) formed on the third inclined surface (72') of the second prism (7') can be horizontally inverted with the second image (G2) emitted to the second area (A2') of the display unit (2').

[0302] Considering that the first image (G1) and the second image (G2) are flipped left and right, the display unit (2') can display each of the first image (G1) and the second image (G2) by flipping them left and right as shown in FIG. 13.

[0303] A first image (G1) formed on the first inclined surface (62') of the first prism (6') and a second image (G2) formed on the third inclined surface (72') of the second prism (7') can be displayed by overlapping them forward, and can be displayed as a single image, as in an example of a display device.

[0304] The occupant can see the superimposed image of the first image (G1) and the second image (G2) through the second prism (7').

[0305] The display unit (2') can control the intensity (luminance) of the light source for each area (A1) (A2), and can control the luminance of the first image (G1) reflected by the first inclined surface (62') and the luminance of the second image (G2) reflected by the third inclined surface (72') of the second prism (7).

[0306] The above description is merely an illustrative explanation of the technical concept of the present invention, and those skilled in the art to which the present invention pertains will be able to make various modifications and variations within the scope of the essential characteristics of the present invention.

[0307] Accordingly, the embodiments disclosed in this invention are intended to explain, not limit, the technical concept of the invention, and the scope of the technical concept of the invention is not limited by these embodiments.

[0308] The scope of protection of the present invention shall be interpreted by the claims below, and all technical ideas within an equivalent scope shall be interpreted as being included within the scope of rights of the present invention.

Claims

1. A display unit that emits a first image to a first area among multiple areas and emits a second image to a second area among multiple areas; A first prism that reflects a first image emitted through the first region; and It includes a second prism that reflects a second image emitted through the second region and transmits a first image reflected from the first prism. A display device that displays the first image and the second image superimposed.

2. In Paragraph 1, The above first prism is A first incident surface into which a first image emitted through the above first region is incident; A first inclined surface that reflects a first image incident on the first incident surface to the second prism; and A display device comprising a second inclined surface on which a first image reflected from the first inclined surface is emitted.

3. In Paragraph 2, The above-mentioned first inclined surface and second inclined surface are spaced apart display devices.

4. In Paragraph 2, The above first inclined surface and the second inclined surface are parallel display devices.

5. In Paragraph 2, A display device in which the first inclined plane and the first incident plane are at an acute angle.

6. In Paragraph 2, A display device in which the second inclined plane and the first incident plane are obtuse angles.

7. In Paragraph 2, The above second prism is A second incident surface into which a second image emitted through the above second region is incident; A third inclined surface that reflects the second image incident on the second incident surface and transmits the first image reflected from the first inclined surface; and A display device comprising an output surface through which a second image reflected from the third inclined surface and a first image transmitted through the second inclined surface are emitted.

8. In Paragraph 7, The third inclined surface is a display device parallel to the first inclined surface.

9. In Paragraph 7, A display device in which the third inclined plane and the second incident plane are at an acute angle.

10. In Paragraph 9, The above acute angle is 40° to 50°, and A display device in which the transmittance of the third inclined surface is 40% to 50%.

11. In Paragraph 9, The above acute angle is 40° to 50°, and A display device in which the light absorption rate of the third inclined surface is less than 10%.

12. In Paragraph 9, The above acute angle is 40° to 50°, and A display device in which the polarization deviation of the third inclined plane is less than 6%.

13. In Paragraph 7, The above second inclined surface and third inclined surface are a display device bonded by a bond.

14. In Paragraph 13, A display device in which the refractive index of the bond is 1.46 to 1.

56.

15. In Paragraph 1, A display device further comprising a damping member that covers the display unit and on which the first prism and the second prism are seated.

Images