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CN-121995636-A - Display device

CN121995636ACN 121995636 ACN121995636 ACN 121995636ACN-121995636-A

Abstract

The present disclosure relates to a display device capable of visually recognizing one of two images different from each other as a virtual image and improving visibility of the virtual image. The display device (1) is provided with a first light source device (10) which emits first emission light (SL 1) along a first direction (W1), a second light source device (20) which emits second emission light (SL 2) along a second direction (W2) which is different from the first direction (W1), and a liquid crystal panel (30) on which the first emission light (SL 1) and the second emission light (SL 2) are incident. The liquid crystal panel (30) modulates the first emission light (SL 1) and emits the first emission light (SL 3) in a first direction (W1) toward the transparent body (2) as third emission light (SL 3) corresponding to the first image (G1), and modulates the second emission light (SL 2) and displays a second image (G2) on the display surface (30 a). The first outgoing light (SL 1) has a higher brightness than the second outgoing light (SL 2).

Inventors

  • Nakauchi Tomokazu

Assignees

  • 株式会社日本显示器

Dates

Publication Date
20260508
Application Date
20251104
Priority Date
20241106

Claims (7)

  1. 1. A display device is provided with: A first light source device for emitting first outgoing light along a first direction; a second light source device for emitting a second outgoing light in a second direction different from the first direction, and A liquid crystal panel, the first emergent light and the second emergent light are incident on the liquid crystal panel, The liquid crystal panel modulates the first outgoing light to be emitted in the first direction toward the light transmitting body as third outgoing light corresponding to the first image, modulates the second outgoing light to display a second image on a display surface, The brightness of the first emergent light is higher than that of the second emergent light.
  2. 2. The display device according to claim 1, wherein, The second outgoing light is more diffuse than the first outgoing light.
  3. 3. The display device according to claim 1, wherein, The first light source device includes: A plurality of first light emitters for emitting first light, and And a lens for refracting the first light in the first direction and emitting the first light as the first emitted light.
  4. 4. The display device according to claim 1, wherein, The second light source device includes: A plurality of second light emitters emitting second light; A light guide body having a side plate surface on which the second light is incident and a plate surface for emitting the second light incident from the side plate surface, and And a prism sheet for refracting the second light emitted from the plate surface so as to extend in the second direction and emitting the second light as the second emitted light.
  5. 5. The display device according to claim 4, wherein, The plate surface is inclined with respect to the second direction, The second light source device is disposed in a state in which the plate surface is parallel to the first direction.
  6. 6. The display device according to claim 4, wherein, The second light source device further includes a diffusion sheet disposed on one side of the plate surface.
  7. 7. The display device according to claim 1, wherein, The liquid crystal panel includes a plurality of first sub-pixels corresponding to the first image and a plurality of second sub-pixels corresponding to the second image, which are arranged in a matrix in a plan view, and further includes a parallax barrier that passes the first emission light transmitted through the first sub-pixels and passes the second emission light transmitted through the second sub-pixels, and blocks the second emission light transmitted through the first sub-pixels and the first emission light transmitted through the second sub-pixels.

Description

Display device Technical Field The present disclosure relates to a display device. Background As an example of a display device, patent document 1 discloses an information display device having a display capable of displaying two pieces of information on one screen. In the display device of patent document 1, one piece of information is obtained by looking directly at the display, and the other piece of information is obtained via a projection plane located above the display surface of the display. Patent document 1 Japanese patent laid-open No. 2006-259043 In the display device of patent document 1, information obtained through a projection surface is visually recognized as a virtual image. The virtual image is difficult to be visually recognized when the surroundings are bright, for example, in the daytime. Disclosure of Invention The present disclosure aims to improve visibility of a virtual image in a display device capable of visually recognizing one of two images different from each other as the virtual image. The display device includes a first light source device that emits first light in a first direction, a second light source device that emits second light in a second direction different from the first direction, and a liquid crystal panel that irradiates the liquid crystal panel with the first light and the second light, modulates the first light to emit the first light in the first direction as third light corresponding to a first image, modulates the second light to display a second image on a display surface, and modulates the first light to have a higher brightness than the second light. Drawings Fig. 1 is a schematic view of a display device according to a first embodiment of the present disclosure. Fig. 2 is a plan view of the first light source device shown in fig. 1. Fig. 3 is a cross-sectional view of the first light source device taken along line III-III shown in fig. 2. Fig. 4 is a cross-sectional view of the second light source device shown in fig. 1. Fig. 5 is a cross-sectional view of the first prism sheet and the second prism sheet along the V-V line shown in fig. 4. Fig. 6 is a conceptual diagram of the liquid crystal panel shown in fig. 1. Fig. 7 is a plan view of the liquid crystal panel shown in fig. 1. Fig. 8 is a diagram showing the arrangement of the first subpixel and the second subpixel shown in fig. 7. Fig. 9 is a diagram showing a circuit configuration of the liquid crystal panel shown in fig. 7. Fig. 10 is a cross-sectional view of the liquid crystal panel shown in fig. 7. Fig. 11 is a top view of the parallax barrier shown in fig. 10. Fig. 12 is a view showing luminance distributions of the first and second emitted lights. Fig. 13 is a schematic view of a display device according to a second embodiment of the present disclosure. Fig. 14 is a cross-sectional view of the second light source device shown in fig. 13. Fig. 15 is a diagram showing the arrangement of the first sub-pixel and the second sub-pixel in the liquid crystal panel provided in the display device according to the modification of each embodiment of the present disclosure. Fig. 16 is a plan view of a parallax barrier in a liquid crystal panel provided in a display device according to a modification of each embodiment of the present disclosure. Description of the reference numerals 1, Display device, 2, light transmitting body, 10, first light source device, 12, first illuminant, 14, second lens (lens), 20, second light source device, 21, second illuminant, 22, light guiding body, 22a, side plate, 22b, first plate (plate surface), 24, diffusion sheet, 25, first prism sheet (prism sheet), 26, second prism sheet (prism sheet), 30, liquid crystal panel, 30a, parallax barrier, L1, second light, SL1, first emergent light, SL2, second emergent light, SL3, third emergent light, SP1, first sub-pixel, SP2, second sub-pixel, W1, first direction, W2, second direction. Detailed Description Embodiments of the present disclosure will be described below with reference to the drawings. The present disclosure is not limited by the following description of the embodiments. The constituent elements described below include elements that can be easily understood by those skilled in the art, and substantially the same elements. Further, the constituent elements described below may be appropriately combined. It is to be noted that the disclosure is merely an example, and that appropriate modifications which can be easily made by those skilled in the art to maintain the gist of the disclosure are of course also included in the scope of the disclosure. In addition, for the sake of clarity of the description, the width, thickness, shape, and the like of each portion may be schematically represented as compared with the actual embodiment, but this is merely an example, and does not limit the explanation of the present disclosure. In the present specification and the drawings, the same elements as those described with respect to the