Display device

Abstract

To provide a display device capable of making a post card phenomenon inconspicuous.SOLUTION: A display device 1 comprises: a display 10 that emits first light L1 representing an image from a display area 11; a light guide plate 30 that is located in front of the display 10, and guides second light L2 from a light source 21 from the lateral side to the inside; and a decorative part 50 that is located in front of the light guide plate 30, and has a decorative display 520. The display 10 has a non-display area 12 that surrounds the display area 11. The decorative display 520 is provided at a position facing at least the non-display area 12, and is illuminated by the second light L2 guided by the light guide plate 30.SELECTED DRAWING: Figure 1

Description

[Technical field]

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

[0002] For example, Patent Document 1 describes a display device in which the front of a display that emits display light is covered with a screen that transmits the display light, and the surface of the screen is set to the same woodgrain color and pattern as the mounting portion around the display. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2001-331132 A Summary of the Invention [Problem to be solved by the invention]

[0004] In this type of display device, when a display that displays an image using a backlight such as a liquid crystal display is used, a phenomenon in which the boundary between the image display area and the non-display area surrounding the display area becomes obvious due to leakage light from the backlight (hereinafter, this phenomenon will be referred to as the "postcard phenomenon") is likely to occur. When the postcard phenomenon occurs, there is a risk that the aesthetic appearance of the display device will be marred.

[0005] The present disclosure has been made in consideration of the above-mentioned circumstances, and has an object to provide a display device that can make the postcard phenomenon less noticeable. [Means for solving the problem]

[0006] In order to achieve the above object, the display device according to the present disclosure comprises: a display device having a display area for displaying an image and a non-display area surrounding the display area, the display device emitting a first light representing the image from the display area; a light guide plate located in front of the display and configured to guide the second light, which is light from the light source, from a side portion to an inside of the display; A decorative portion is provided in front of the light guide plate and has a decorative display. The decorative display is provided at a position facing at least the non-display area, and is illuminated by the second light guided by the light guide plate. Effect of the Invention

[0007] According to the present disclosure, the postcard phenomenon can be made less noticeable. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram showing a configuration of a display device according to an embodiment of the present disclosure. [Diagram 2] 4A and 4B are diagrams showing an example of the configuration of a decorative portion according to the embodiment; [Diagram 3] 11A and 11B are diagrams showing examples of decorative display according to the embodiment; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] An embodiment of the present disclosure will be described with reference to the drawings.

[0010] 1 is provided, for example, on a dashboard (including an instrument panel) of a vehicle and displays an image. The image includes an information image for notifying a user of predetermined information. For example, the information image shows various information related to the vehicle, such as the vehicle speed and the remaining fuel level.

[0011] The display device 1 includes a display 10, a light source substrate 20, a light guide plate 30, a light-transmitting layer 40, a decorative section 50, and a control section 60. In addition, in Fig. 1 and Fig. 2, the front of the display device 1 is indicated by Fd, and the rear is indicated by Bd. The terms "front" and "rear" used below follow these directions unless otherwise specified.

[0012] The display 10 is composed of, for example, a TFT (Thin Film Transistor) type liquid crystal display. The display 10 has a display area 11 that displays an image, and a non-display area 12 that surrounds the display area 11. The display 10 emits a first light L1, which is light that represents an image, from the display area 11. The first light L1 passes through the light guide plate 30 and the decorative portion 50 and travels forward. The display area 11 corresponds to a pixel formation area 10a of the display 10, and is, for example, rectangular in plan view. On the other hand, the non-display area 12 is an area in which the display 10 cannot display an image.

[0013] The light source substrate 20 is made of a PCB (Printed Circuit Board) on which a light source 21 is mounted. The light source 21 is made of, for example, an LED (Light Emitting Diode) and emits a second light L2 toward the light guide plate 30. In this embodiment, the light source substrate 20 is provided opposite a side portion of the light guide plate 30, and the light source 21 emits the second light L2 toward the side portion.

[0014] The light guide plate 30 is a plate-shaped member made of a light-transmitting and light-guiding material such as acrylic. The light guide plate 30 covers the display area 11 and the non-display area 12.

[0015] The light guide plate 30 is located in front of the display device 10 and guides the second light L2 from the light source 21 from the side to the inside. The light guide plate 30 has a reflecting portion 31 that reflects the second light L2 guided from the light source 21 to the inside of the light guide plate 30 forward. A reflecting layer 32 is formed on the side (left end in FIG. 1) of the light guide plate 30 opposite to the side (right end in FIG. 1) facing the light source 21. The reflecting layer 32 may be a known reflecting layer such as an aluminum deposition layer. The reflecting layer 32 reflects the second light L2 that reaches the left end of the light guide plate 30 to the right, thereby reducing the loss of the second light L2 that illuminates the decorative display 520 as described later. In addition, the light guide plate 30 is provided with light-shielding layers S1 and S2. The reflecting portion 31 and the light-shielding layers S1 and S2 will be described later together with the details of the decorative display 520.

[0016] The light-transmitting layer 40 is located between the display 10 and the light guide plate 30. In this embodiment, the light-transmitting layer 40 is made of an optically clear adhesive (OCA), and the light guide plate 30 is fixed to the front surface of the display 10 via the light-transmitting layer 40. That is, the light guide plate 30 is fixed to the display 10 by optical bonding.

[0017] The decorative part 50 is a part that adds decoration to the display device 1, and is located in front of the light guide plate 30. The decorative part 50 has at least a degree of translucency that allows a user to visually recognize an image displayed by the display device 10. As shown in Fig. 2, the decorative part 50 includes a translucent plate 51, a decorative layer 52, and a hard coat layer 53. The translucent plate 51 is formed into a plate shape from inorganic glass or organic glass.

[0018] The decorative layer 52 is, for example, a printed layer formed on the front surface of the light-transmitting plate 51, and imparts a pattern (not shown) such as a grain pattern, a metallic pattern, or a carbon pattern to the entire area of ​​the light-transmitting plate 51. In addition, the decorative layer 52 forms an arbitrary decorative display 520 (see FIG. 3). That is, the decorative portion 50 has the decorative display 520. Details of the decorative display 520 will be described later.

[0019] The hard coat layer 53 is formed on the front surface of the decorative part 50 and contains silica or the like to ensure scratch resistance. The decorative layer 52 may be formed on at least one of the front surface and the back surface of the light-transmitting plate 51. The decorative layer 52 may also be formed on the front surface of the light guide plate 30. The decorative layer 52 is not limited to a printed layer, and may be formed of a thin film of wood or the like. The hard coat layer 53 may also be omitted. The decorative part 50 is not limited to a plate shape, and at least a part of it may be three-dimensional or have a curved surface.

[0020] The control unit 60 is composed of, for example, a microcontroller, and controls the operation of each of the display device 10 and the light source substrate 20. For example, the control unit 60 communicates with various electronic components such as an ECU (Electronic Control Unit) of the vehicle, and monitors various vehicle conditions. The control unit 60 also generates an image to be displayed on the display device 10 based on various vehicle conditions and image data for drawing stored in the memory.

[0021] (About decorative displays) Fig. 3 is a plan view of the display device 1, looking from the front near the display area 11. In Fig. 3, the rectangular area indicated by a dashed line is the display area 11. The figure also shows an example in which the image displayed in the display area 11 includes an information image indicating the vehicle speed of "89km / h".

[0022] The decorative display 520, as shown in FIG. 3, is designed to resemble an ivy. The decorative display 520 is formed across the boundary between the display area 11 and the non-display area 12. The decorative display 520 is provided at a position facing at least the non-display area 12, and is illuminated by the second light L2 guided by the light guide plate 30. If no measures are taken, the postcard phenomenon may be significantly observed at the outer edge of the display area 11. However, the display device 1 according to the present embodiment can make the postcard phenomenon less noticeable by illuminating the decorative display 520 with the second light L2. The design of the decorative display 520 is arbitrary as long as it can make the postcard phenomenon less noticeable, and is of course not limited to the example shown in FIG. 3.

[0023] As described above, the reflecting portion 31 of the light guide plate 30 reflects the second light L2 toward the decorative display 520. The reflecting portion 31 according to this embodiment is formed from a collection of fine concave shapes formed on the front surface of the light guide plate 30. This reflecting portion 31 can effectively illuminate the decorative display 520, and can effectively make the postcard phenomenon less noticeable. The reflecting portion 31 may be formed on at least one of the front surface and the back surface of the light guide plate 30, and may be a convex portion formed on the light guide plate 30. In other words, the reflecting portion 31 may be a portion formed on the light guide plate 30 and formed with at least one of a concave shape and a convex shape.

[0024] Specifically, decorative display 520 has first portion 521 facing non-display area 12 and second portion 522 facing display area 11 and adjacent to first portion 521, as shown in Fig. 1 and Fig. 3. In this case, reflecting section 31 is provided at a position facing each of first portion 521 and second portion 522. As a result, decorative display 520 is formed across the boundary between display area 11 and non-display area 12, so that it is possible to reduce the user's attention being drawn to the frame of display area 11 where the postcard phenomenon may occur, and it is possible to effectively make the postcard phenomenon less noticeable.

[0025] As shown in FIG. 1, a light-shielding layer S1 is provided on the rear surface of the light guide plate 30 in a portion facing the first portion 521 and the second portion 522. The light-shielding layer S1 may be made of a print layer, a film material, a tape material, or the like having light-shielding properties. This allows the user to more clearly view the decorative display 520 illuminated by the second light L2, and covers the frame of the display area 11 where the postcard phenomenon may occur, making the postcard phenomenon less noticeable. In addition, the light-shielding layer S1 may be formed in a dot-like or slit-like shape to cover the frame of the display area 11, providing a light-transmitting portion and blurring the portion corresponding to the frame of the display area 11. This makes it possible to more effectively make the postcard phenomenon less noticeable.

[0026] 1, a light-shielding layer S2 may be provided on the front surface of the light guide plate 30 in a portion corresponding to the gap in the shape indicated by the decorative display 520 (for example, a portion corresponding to a portion between the vines or between the vines and the leaves in the decorative display 520 in FIG. 3). In this way, the shape indicated by the decorative display 520 can be clearly visually recognized by the user. The light-shielding layer S2 may also be made of a printed layer, a film material, a tape material, or the like having light-shielding properties.

[0027] The present invention is not limited to the above-described embodiment and drawings, and can be modified (including the deletion of components) as appropriate without departing from the spirit of the present invention.

[0028] (Modification) The display 10 may be capable of displaying a decorative image related to the decorative display 520 as an image. If the decorative image is explained using the example of FIG. 3, it means that the leaves and vines shown in the display area 11 are decorative images displayed by the display 10. In this way, the decorative display 520 in the non-display area 12 and the decorative image in the display area 11 can cooperate to display any design. As a result, it is possible to reduce the user's attention being drawn to the frame of the display area 11 where the postcard phenomenon may occur, and it is possible to effectively make the postcard phenomenon less noticeable. Note that the form of the decorative image related to the decorative display 520 is not limited to an example in which the decorative display 520 and the decorative image show the same type of design, and includes a form in which the two designs are related to each other and give the user a sense of unity, such as when the design shown by the decorative display 520 is a "tree" while the design shown by the decorative image is a "leaf" or "nut". In addition, even when the display 10 displays a decorative image, the decorative display 520 may be provided at a position facing the display area 11.

[0029] The configuration for guiding the second light L2 from the light source 21 to the light guide plate 30 may be any configuration as long as the second light L2 is guided from the side of the light guide plate 30 to the inside of the light guide plate 30. For example, the side of the light guide plate 30 may be inclined. Also, a light guide section (not shown) for guiding the second light L2 to the side of the light guide plate 30 may be provided. This light guide section may be integrated with the light guide plate 30 or may be separate. Also, a plurality of light sources 21 may be provided. The plurality of light sources 21 may emit light of the same color, or may include LEDs that emit light of different colors. In this case, the control unit 60 may be capable of controlling the light emission pattern of the plurality of light sources 21 via the light source substrate 20. Also, the light guide plate 30 and the decoration section 50 may not cover the entire display area 11, but may cover at least the non-display area 12. For example, the light guide plate 30 and the decoration section 50 may be formed in a frame shape in a plan view.

[0030] Display 10 is not limited to a liquid crystal display, and may be a projector-type display using a DMD (Digital Micromirror Device) etc. In this case, a screen onto which an image is projected is defined as display area 11, and an area surrounding display area 11 is defined as non-display area 12.

[0031] (Additional Note) (Appendix 1) a display device having a display area for displaying an image and a non-display area surrounding the display area, the display device emitting a first light representing the image from the display area; a light guide plate located in front of the display and configured to guide the second light, which is light from the light source, from a side portion to an inside of the display; A decorative portion is provided in front of the light guide plate and has a decorative display. the decorative display is provided at a position facing at least the non-display area, and is illuminated by the second light guided by the light guide plate. Display device.

[0032] (Appendix 2) the light guide plate has a reflecting portion that reflects the second light guided therein toward the decorative display, The reflecting portion is a portion formed on the light guide plate and having at least one of a concave and a convex shape. 2. A display device according to claim 1.

[0033] (Appendix 3) the light guide plate covers the display area and the non-display area, The first light is transmitted through the light guide plate and the decorative portion and directed forward, The decorative display has a first portion facing the non-display area and a second portion facing the display area and adjacent to the first portion. 3. The display device according to claim 1 or 2.

[0034] (Appendix 4) a light-shielding layer is provided on a portion of the rear surface of the light guide plate that faces the first portion and the second portion; 4. The display device according to claim 3.

[0035] (Appendix 5) The display device is capable of displaying, as the image, a decorative image related to the decorative display. The display device according to any one of claims 1 to 4.

[0036] In the above description, descriptions of well-known technical matters have been omitted as appropriate in order to facilitate understanding of the present disclosure.

[0037] Various embodiments and modifications of the present invention are possible without departing from the broad spirit and scope of the present invention. The above-described embodiments are for the purpose of explaining the present invention and do not limit the scope of the present invention. That is, the scope of the present invention is indicated by the claims, not the embodiments. Various modifications made within the scope of the claims and the scope of the invention equivalent thereto are considered to be within the scope of the present invention. [Explanation of symbols]

[0038] 1...Display device 10...display, 10a...pixel formation area 11...display area, L1...first light 12…Hidden area 20: light source substrate, 21: light source, L2: second light 30...Light guide plate, 31...Reflection part, 32...Reflection layer 40...Transparent layer 50...decorative portion, 51...translucent plate, 52...decorative layer, 53...hard coat layer 520...decoration display, 521...first part, 522...second part 60...Control unit S1,S2...light shielding layer

Claims

1. a display device having a display area for displaying an image and a non-display area surrounding the display area, the display device emitting a first light representing the image from the display area; a light guide plate located in front of the display and configured to guide the second light, which is light from a light source, from a side portion to an inside of the display; A decorative portion is provided in front of the light guide plate and has a decorative display. the decorative display is provided at a position facing at least the non-display area, and is illuminated by the second light guided by the light guide plate; Display device.

2. the light guide plate has a reflecting portion that reflects the second light guided therein toward the decorative display, The reflecting portion is a portion formed on the light guide plate and having at least one of a concave and a convex shape. The display device according to claim 1 .

3. the light guide plate covers the display area and the non-display area, The first light is transmitted through the light guide plate and the decorative portion and directed forward, the decorative display has a first portion facing the non-display area and a second portion facing the display area and adjacent to the first portion; The display device according to claim 1 .

4. a light-shielding layer is provided on a portion of the rear surface of the light guide plate that faces the first portion and the second portion; The display device according to claim 3 .

5. The display device is capable of displaying, as the image, a decorative image related to the decorative display. The display device according to claim 1 .

Images