Vehicle display device

Abstract

The present invention provides a vehicle display device capable of suppressing static electricity from being applied to a display element. The vehicle display device (1) comprises: a display panel (20) formed with an exposure hole (20h); a display element (10) having a display surface (10a), the display surface (10a) being exposed through the exposure hole (20h); a circuit substrate (30) located on the back side of the display element (10) and electrically connected to the display element (10); and a conductive component connected to a ground terminal of the circuit substrate (30). The display panel (20) comprises: a conductive layer (21) formed on the back side of the display panel (20), the conductive layer having a hole edge portion (21e) formed along at least a portion of the periphery of the exposure hole (20h), and a discharge portion connected to the hole edge portion (21e) and opposite to the conductive component; and an insulating layer (25) formed on the back side of the conductive layer (21) in order to hide the conductive layer (21) from the outside.

Description

Technical Field

[0001] The present invention relates to a display device for a vehicle. Background Art

[0002] In the past, a vehicle display device for displaying vehicle information is known. For example, the vehicle display device described in Patent Document 1, i.e., an instrument device, includes: a display panel having an opening; a display element arranged so as to be visually confirmed through the opening; a circuit substrate arranged behind the display panel and electrically connected to the display element; a conductive printed layer provided along the opening on the rear surface of the display panel; and a connecting member electrically connecting the circuit substrate and the conductive printed layer.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2016-205979 Summary of the invention

[0006] In the configuration of Patent Document 1, the distance from the conductive print layer to the display element is short, so there is a concern that static electricity on the display panel may be applied from the conductive print layer to the display element, thereby causing a risk of malfunction of the display element.

[0007] The present invention has been made in view of the above-mentioned actual situation, and an object of the present invention is to provide a vehicle display device capable of suppressing static electricity from being applied to a display element.

[0008] In order to achieve the above-mentioned purpose, the vehicle display device of the present invention comprises: a display panel formed with an exposure hole; a display element having a display surface, the display surface being exposed through the exposure hole; a circuit substrate located on the back side of the display element and electrically connected to the display element; and a conductive component connected to the ground terminal of the circuit substrate, the display panel comprising: a conductive layer formed on the back side of the display panel, the conductive layer having a hole edge portion formed along at least a portion of the periphery of the exposure hole, and a discharge portion connected to the hole edge portion and opposite to the conductive component; and an insulating layer formed on the back side of the conductive layer in order to hide the conductive layer from the outside.

[0009] Effects of the Invention

[0010] According to the present invention, in the vehicle display device, it is possible to suppress the application of static electricity to the display element. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a front view of a vehicle display device according to one embodiment of the present invention.

[0012] Figure 2 yes Figure 1A-A line cross-sectional view.

[0013] Figure 3 yes Figure 1 BB line cross-sectional view.

[0014] Figure 4 This is an enlarged front view of the periphery of the exposure hole of the display panel according to one embodiment of the present invention.

[0015] Figure 5 This is an enlarged front view of a portion of an inner housing that accommodates a display element and a light source according to an embodiment of the present invention.

[0016] Figure 6 This is an enlarged front view of the periphery of the exposure hole of the display panel according to the modified example of the present invention.

[0017] Figure 7 yes Figure 6 C-C line cross-sectional view.

[0018] Description of Reference Numerals

[0019] 1 Display device for vehicle

[0020] 10 Display components

[0021] 10a Display surface

[0022] 11 LCD

[0023] 12 Backlight

[0024] 13 Lead terminal

[0025] 20 Display Board

[0026] 20h Exposure hole

[0027] 20i shaft through hole

[0028] 21 Conductive layer

[0029] 21a, 21b, 21c Edges

[0030] 21d Discharge unit

[0031] 21e Hole edge

[0032] 21f Extension

[0033] 22 substrate

[0034] 25 Insulation layer

[0035] 28 Shading layer

[0036] 28g, 28i Decorative holes

[0037] 29 Lens cover

[0038] 30 Circuit board

[0039] 35a, 35b Light source

[0040] 40 Upper shell

[0041] 41 Flange

[0042] 45 Middle shell

[0043] 45a Display element storage portion

[0044] 45a1 Through-hole

[0045] 45b Conductive component receiving portion

[0046] 45b1 Support surface

[0047] 45c Light source storage unit

[0048] 45d Shaft housing

[0049] 46 Lower shell

[0050] 60 Conductive parts

[0051] 61 1st end

[0052] 62 2nd end

[0053] 63 Connection

[0054] 65 Ground terminal

[0055] 71, 72, 73 pointer

[0056] 75 Rotation axis DETAILED DESCRIPTION

[0057] An embodiment of a vehicle display device according to the present invention will be described with reference to the accompanying drawings. The vehicle display device is an instrument device mounted on a vehicle such as an automobile or a motorcycle and displays vehicle information such as vehicle speed.

[0058] like Figure 1 As shown, the vehicle display device 1 displays vehicle information such as vehicle speed, engine speed, and remaining fuel by rotating a plurality of analog pointers 71, 72, and 73 relative to scales and numbers not shown. In addition, the vehicle display device 1 displays information different from the pointers 71, 72, and 73, such as the vehicle travel distance, by displaying an image on the display surface 10a of the display element 10.

[0059] Specifically, the vehicle display device 1 is as follows: Figure 1As shown, there are a display element 10, a display panel 20, an upper housing 40, pointers 71, 72, 73, as shown in FIG. Figure 2 As shown, there are a circuit substrate 30, a middle shell 45, and a lower shell 46. Figure 3 A conductive member 60 is shown.

[0060] In the following, from the perspective of a viewer visually viewing the vehicle display device 1 , the left-right direction is defined as the X direction, the up-down direction is defined as the Y direction, and the front-back direction is defined as the Z direction. The front direction is the direction approaching the viewer, and the back direction is the direction away from the viewer. Figure 2 as well as Figure 3 In the figure, the upper direction is the front direction, and the lower direction is the back direction.

[0061] like Figure 2 As shown, the lower case 46 is formed of resin and is formed into a box shape with an opening on the front side. The circuit board 30 and the middle case 45 are accommodated in the lower case 46. Figure 1 The upper housing 40 is shown.

[0062] The upper case 40 is formed of resin and has a frame shape that can be mounted on the upper end of the lower case 46. Figure 1 as well as Figure 2 As shown, the upper case 40 includes a flange portion 41 surrounding the upper portion of the display panel 20 , and a lens cover 29 .

[0063] like Figure 2 As shown, the lens cover 29 is formed into a plate shape by transparent resin or glass and is surrounded by a flange portion 41. The lens cover 29 is located on the surface side of the display panel 20 and faces the display panel 20. The lens cover 29 is inclined in a manner approaching the display panel 20 as it moves toward the downward direction as seen by the viewer. Therefore, the distance between the display element 10 located on the lower side and the lens cover 29 becomes closer when the vehicle display device 1 is viewed from the front. Therefore, the static electricity carried by the lens cover 29 is easily applied to the display element 10. In addition, static electricity is easily stored in the space surrounded by the flange portion 41 of the upper shell 40. Therefore, static electricity is also easily applied to the display element 10 located on the outer peripheral side when the vehicle display device 1 is viewed from the front.

[0064] like Figure 2 as well as Figure 5 As shown, the circuit board 30 includes a printed circuit board on which the backlight 12, light sources 35a, 35b and a control unit (not shown) are mounted. The circuit board 30 is disposed in the lower housing 46. The light sources 35a, 35b are LEDs (Light Emitting Diodes) that illuminate the display panel 20 and the pointers 71, 72, 73.

[0065] like Figure 2As shown, the middle housing 45 is formed of resin and is disposed on the upper surface of the circuit substrate 30 in the lower housing 46. Figure 5 As shown, the middle housing 45 has: a display element receiving portion 45a for receiving the display element 10; a conductive component receiving portion 45b for receiving the conductive component 60; a light source receiving portion 45c for receiving the light source 35a; and a pointer 71 (see Figure 1 )'s rotating shaft 75 and the shaft housing portion 45d of the light source 35b.

[0066] like Figure 5 As shown, the display element receiving portion 45a has a rectangular hole when viewed from the front, and in this example, a rectangular hole that is long in the left-right direction. Figure 2 As shown, the display element housing portion 45a has a pair of support portions 45a2 that support the lower surfaces of the left and right ends of the display element 10. In addition, the display element housing portion 45a has a penetration portion 45a1 that penetrates toward the circuit substrate 30 so that the lead terminal 13 of the housed display element 10 can be connected to the circuit substrate 30.

[0067] Figure 5 As shown, the light source housing portion 45c has a through hole that penetrates the middle housing 45 in the Z direction, and surrounds the light source 35a mounted on the circuit substrate 30. The light source housing portion 45c guides the light emitted by the light source 35a toward the display panel 20. The light source housing portion 45c is formed in a range that is included in the movement trajectory of the pointer 71 and is a range that surrounds a part of the periphery of the shaft housing portion 45d.

[0068] like Figure 5 As shown, the shaft receiving portion 45d has a through hole that penetrates the middle housing 45 in the Z direction, and the pointer 71 (see Figure 1 ) and the light source 35b. The shaft housing portion 45d is formed in a circular shape when viewed from the front, is located on the upper side of the display element housing portion 45a, and is located between the conductive component housing portion 45b and the light source housing portion 45c in the X direction. The rotating shaft 75 passes through the circuit substrate 30 and is connected to a motor (not shown) mounted on the back of the circuit substrate 30. Driven by the motor, Figure 1 The pointer 71 shown rotates around the rotation shaft 75. The light source 35b housed in the shaft housing portion 45d emits light to light the pointer 71. The pointer 71 has a transmissive member that transmits the light from the light source 35b.

[0069] like Figure 5As shown, the conductive component receiving portion 45b has a through hole that penetrates the middle housing 45 in the Z direction, and receives the conductive component 60. The conductive component receiving portion 45b is formed in a rectangular shape when viewed from the front, and is located on the upper side of the display element receiving portion 45a, and is located at a position corresponding to the end of the display element receiving portion 45a in the X direction. In this example, it is located at a position corresponding to the right end of the display element receiving portion 45a. Figure 3 As shown in the figure, the conductive component receiving portion 45b has a support surface 45b1 that supports the first end portion 61 of the conductive component 60 described later from the bottom. The support surface 45b1 is formed by using the surface of the middle housing 45 as the bottom surface of the recessed concave portion. The support surface 45b1 intersects the inner side wall of the conductive component receiving portion 45b extending in the Z direction at a right angle. The ground terminal 65 is received in the conductive component receiving portion 45b.

[0070] like Figure 2 As shown, the display element 10 has a display surface 10a for displaying information. The display element 10 is accommodated in the display element accommodating portion 45a of the middle housing 45. The display surface 10a is a rectangular shape elongated in the X direction and is located on the front side of the display element 10.

[0071] The display element 10 has a segmented LCD (Liquid Crystal Display) 11 and a backlight 12 for illuminating the LCD 11. The backlight 12 has a plurality of LEDs and is mounted on the front surface of the circuit board 30. In the LCD 11, the transmission and non-transmission of light from the backlight 12 are switched for each segment. Thus, information is displayed on the display surface 10a of the display element 10.

[0072] In addition, if Figure 5 As shown, the display element 10 has a plurality of lead terminals 13. The plurality of lead terminals 13 are located on the side surface of the lower side of the display element 10 and are arranged along the X direction. The lead terminal 13 is formed of metal in a substantially L-shape. The top of the lead terminal 13 is in contact with the circuit substrate 30. The lead terminal 13 electrically connects the display element 10 and the circuit substrate 30. Various signals such as control signals sent and received between the display element 10 and the circuit substrate 30 pass through the lead terminal 13.

[0073] like Figure 2 As shown, the display panel 20 is formed in a plate shape and is disposed on the surface of the middle housing 45 .

[0074] like Figure 4 As shown, the display panel 20 is provided with an exposure hole 20h for exposing the display surface 10a of the display element 10 and a rotation shaft 75 (see Figure 5 ) interspersed shaft through hole 20i.

[0075] The shaft through hole 20i is circular and is located above the right side portion of the exposure hole 20h. In addition, in this specification, exposure refers to optical exposure. For example, even if the transparent plate is located in the exposure hole 20h, the display surface 10a is exposed from the exposure hole 20h.

[0076] The exposure hole 20h is a generally rectangular shape that is long in the X direction, and is more precisely a parallelogram whose upper and lower sides extend in the X direction and whose right and left sides extend obliquely in the Y direction. The four corners of the exposure hole 20h are rounded. The exposure hole 20h is smaller than the display surface 10a in such a manner as to include the display surface 10a. Figure 1 As shown, the exposure hole 20 h is located on the lower side of the pointer 71.

[0077] like Figure 2 As shown, the display panel 20 has a substrate 22 , a conductive layer 21 , an insulating layer 25 , and a light shielding layer 28 .

[0078] The substrate 22 is a light-transmitting substrate made of a resin such as polycarbonate.

[0079] The light shielding layer 28 is formed on the surface of the substrate 22, and is composed of, for example, black ink having light shielding properties. The light shielding layer 28 is formed on the entire area of ​​the surface of the substrate 22 except for the transparent portion corresponding to the numbers and scales not shown. The substrate 22 is exposed in the transparent portion. The display panel 20 receives light from the light source 35a and lights up the transparent portion. The light shielding layer 28 is formed on the surface side of the substrate 22 by printing.

[0080] The conductive layer 21 is formed of a conductive material such as silver or copper, and is formed around the exposure hole 20h in the back surface of the substrate 22. The conductive layer 21 is formed on the back surface of the substrate 22 by printing ink containing a metallic paint. The conductive layer 21 discharges static electricity on the display panel 20 to a ground terminal 65 of the circuit substrate 30 described later via the conductive member 60.

[0081] like Figure 4 As shown, the conductive layer 21 has a hole edge portion 21e formed around the exposure hole 20h, and a conductive member 60 (see Figure 5) is formed as a discharge portion 21d extending from the exposure hole 20h. The edge of the hole edge 21e that is close to the exposure hole 20h is formed along the periphery of the exposure hole 20h. The hole edge 21e has edges 21a, 21b, and 21c that surround three sides of the exposure hole 20h. The edge 21a is located at a position corresponding to the right side of the exposure hole 20h. The width Wa of the edge 21a along the X direction is formed to be smaller as it approaches the lower side. The edge 21b is located at a position corresponding to the left side of the exposure hole 20h. The width Wb of the edge 21b along the X direction is formed to be larger as it approaches the lower side. In this example, the left side of the exposure hole 20h is in a curved shape with the lower end side tending to the right side, and the edge 21b has a triangular convex portion 21g with the lower end side protruding to the right side along the left side. The edge 21c is located at a position corresponding to the upper side of the exposure hole 20h, and connects the upper parts of the edges 21a and 21b. The width Wc of the side portion 21c along the Y direction is formed to be constant. The width Wc of the side portion 21c is formed to be smaller than the average value of the width Wa of the side portion 21a and the average value of the width Wb of the side portion 21b. The side portions 21a, 21b, and 21c are generally U-shaped and open downward. The conductive layer 21 is not formed at a position corresponding to the lower side of the exposure hole 20h, that is, it is not formed on the lead terminal 13 of the display element 10 (see Figure 5 )’s relative position in the Z direction.

[0082] The discharge portion 21d is located above the side portion 21a in a manner continuous with the side portion 21a. The discharge portion 21d is rectangular, and in this example, is a rectangular shape that is long in the Y direction. The width Wd of the discharge portion 21d along the X direction is formed to be smaller than the average value of the width Wa of the side portion 21a. The discharge portion 21d is located adjacent to the shaft through hole 20i. Figure 3 As shown in FIG. 1 , the discharge portion 21 d is located at a position facing the conductive member 60 accommodated in the conductive member accommodating portion 45 b in the Z direction. The discharge portion 21 d is provided at a position where static electricity can be discharged from the conductive member 60 .

[0083] like Figure 2 As shown, the insulating layer 25 is formed on the back side of the substrate 22 by an insulating material, for example, black ink. The insulating layer 25 is formed on the entire surface of the substrate 22 except for the transparent portion corresponding to the numbers and scales not shown in the figure, similarly to the light shielding layer 28. The insulating layer 25 is formed on the back side of the substrate 22 by printing. The insulating layer 25 is stacked on the back side of the conductive layer 21 in such a way that the conductive layer 21 is hidden from the outside. The conductive layer 21 is hidden from the outside by the insulating layer 25, thereby suppressing oxidation or sulfurization. The back side of the insulating layer 25 is formed in a flat shape.

[0084] like Figure 3As shown, the insulating layer 25 has a sandwiched portion 25a located between the discharge portion 21d of the conductive layer 21 and the conductive member 60. The sandwiched portion 25a hides the discharge portion 21d of the conductive layer 21 from the outside. The thickness of the sandwiched portion 25a is set to a degree that static electricity can be discharged from the conductive layer 21 to the conductive member 60.

[0085] For example, when the thickness of the clamped portion 25a is too thick, static electricity is difficult to be released from the conductive layer 21 to the conductive member 60. On the other hand, when the thickness of the clamped portion 25a is too thin, the conductive layer 21 is easily exposed to the outside, and there is a concern that the conductive layer 21 may be oxidized or sulfurized. From this point of view, the thickness of the clamped portion 25a is set to, for example, 10 μm to 30 μm, preferably 15 μm to 25 μm, and more preferably 20 μm.

[0086] like Figure 3 As shown, the conductive component 60 is made of a conductive material such as metal and is accommodated in the conductive component accommodating portion 45b of the middle housing 45. The conductive component 60 has a first end 61, a second end 62, and a connecting portion 63. The first end 61 and the second end 62 extend in the X direction. The connecting portion 63 extends in the Y direction. The end of the first end 61 is connected to the upper end of the connecting portion 63, and the end of the second end 62 is connected to the lower end of the connecting portion 63. The first end 61 and the second end 62 extend in a direction away from each other in the X direction. The first end 61 is provided on the supporting surface 45b1 of the conductive component accommodating portion 45b, and the surface side contacts the clamped portion 25a of the insulating layer 25 of the display panel 20. The connecting portion 63 extends along the inner side wall of the conductive component accommodating portion 45b. The second end 62 extends along the upper surface of the grounding terminal 65 described later of the circuit substrate 30. The second end portion 62 is in contact with a ground terminal 65 of the circuit board 30 , which will be described later.

[0087] like Figure 3 As shown, the circuit board 30 has a ground terminal 65. The ground terminal 65 is composed of, for example, a metal on-board contact having an overall Z-shaped shape. The ground terminal 65 has elasticity to expand and contract in the Z direction and is fixed to the upper surface of the circuit board 30 by soldering.

[0088] The static electricity carried by the display panel 20 is discharged in the order of the hole edge 21e of the conductive layer 21 → the discharge portion 21d → the conductive member 60 → the ground terminal 65. When the weak current generated by static electricity flows in the hole edge 21e of the conductive layer 21, the insulating layer 25 exists between the hole edge 21e and the display surface 10a of the display element 10, thereby suppressing the application of static electricity to the display element 10. Therefore, malfunction of the display element 10 is suppressed.

[0089] (Effect)

[0090] According to one embodiment described above, the following effects are achieved.

[0091] (1) The vehicle display device 1 includes: a display panel 20 having an exposure hole 20h formed therein; a display element 10 having a display surface 10a, the display surface 10a being exposed through the exposure hole 20h; a circuit substrate 30 located on the back side opposite to the display surface 10a of the display element 10 and electrically connected to the display element 10; and a conductive member 60 connected to a ground terminal 65 of the circuit substrate 30. The display panel 20 includes: a conductive layer 21 formed on the back side of the display panel 20, the conductive layer 21 having a hole edge portion 21e formed along at least a portion of the periphery of the exposure hole 20h, and a discharge portion 21d connected to the hole edge portion 21e and facing the conductive member 60 at a distance capable of discharging static electricity; and an insulating layer 25 formed on the back side of the conductive layer 21 in order to hide the conductive layer 21 from the outside.

[0092] According to this configuration, the insulating layer 25 suppresses static electricity from being applied from the conductive layer 21 to the display element 10. Thus, malfunction of the display element 10 due to static electricity is suppressed.

[0093] (2) The display element 10 has a plurality of lead terminals 13 connected to the circuit substrate 30 and located opposite to one side, i.e., the lower side, of the periphery of the exposure hole 20h. The hole edge portion 21e of the conductive layer 21 is formed along the other sides, i.e., the right side, the left side, and the upper side, of the periphery of the exposure hole 20h other than the one side.

[0094] According to this configuration, the conductive layer 21 is not formed at a position facing the plurality of lead terminals 13. This prevents static electricity on the display panel 20 from being released from the conductive layer 21 to the lead terminals 13. This prevents interference from being superimposed on signals transmitted and received between the display element 10 and the circuit board 30.

[0095] (3) The insulating layer 25 has the sandwiched portion 25 a which is located between the discharge portion 21 d of the conductive layer 21 and the conductive member 60 so as to contact the conductive member 60 , and is set to a thickness that allows static electricity on the display panel 20 to be discharged from the conductive layer 21 to the conductive member 60 .

[0096] According to this configuration, since the sandwiched portion 25a hides the discharge portion 21d of the conductive layer 21, oxidation or sulfurization of the discharge portion 21d is suppressed.

[0097] Furthermore, static electricity on the display panel 20 is discharged from the discharge portion 21d of the conductive layer 21 to the conductive member 60 via the sandwiched portion 25a. Therefore, even if the sandwiched portion 25a exists between the discharge portion 21d of the conductive layer 21 and the conductive member 60, the discharge of static electricity is unlikely to be hindered.

[0098] (4) The vehicle display device 1 includes the lens cover 29 which is located on the front side of the display panel 20, tilted toward the display panel 20 as it goes downward, and faces the display panel 20. The exposure hole 20h is located on the lower side of the display panel 20 and has a rectangular shape.

[0099] According to this configuration, since the distance between the display element 10 and the lens cover 29 is short, static electricity on the lens cover 29 is easily applied to the display element 10. Therefore, it is particularly helpful to discharge static electricity to the outside via the conductive layer 21.

[0100] The present invention is not limited to the above-described embodiments and drawings, and modifications (including deletion of components) may be appropriately implemented without changing the gist of the present invention. An example of modification is described below.

[0101] (Variation Example)

[0102] In the above-described embodiment, a portion of the conductive layer 21 is exposed on the surface of the display panel 20 , and thus a portion of the conductive layer 21 can also be used as a decorative portion.

[0103] Specifically, Figure 6 As shown in FIG. 1 , the conductive layer 21 further includes an extension portion 21f in addition to the side portions 21a, 21b, 21c and the discharge portion 21d. The extension portion 21f is formed on the upper side of the side portion 21c in a manner connected to the side portion 21c. The extension portion 21f is formed along the Figure 1 The direction of rotation of the pointer 71 is an arc shape. Figure 6 as well as Figure 7 As shown, the light shielding layer 28 has decorative holes 28i and 28g that allow a portion of the conductive layer 21 to be visually exposed from the front side. The decorative hole 28i extends along the edge 21c. The decorative hole 28i is in the shape of a rod pointed to the right. The decorative hole 28g is formed along the Figure 1 The decorative hole 28g is formed at a position included in the extension portion 21f. In this example, the decorative holes 28i and 28g are formed independently. In addition, the lower end of the decorative hole 28g may also be connected to the decorative hole 28i without being limited to this example.

[0104] By partially exposing the conductive layer 21 from the decorative holes 28i and 28g, a metallic design can be realized. In addition, the extended portion 21f increases the area of ​​the conductive layer 21. Thus, static electricity in a wide range of the display panel 20 is discharged to the outside.

[0105] The number and shape of the decorative holes 28i and 28g can be changed as appropriate. For example, the decorative holes may be in a shape corresponding to numbers and scales.

[0106] In the above embodiment, the display element 10 includes the LCD 11 and the backlight 12 , but the present invention is not limited thereto and may be a self-luminous display element such as an organic EL (Electro-Luminescence) display element.

[0107] In the above embodiment, the hole edge portion 21e has a substantially U-shape surrounding three sides of the exposure hole 20h, but the present invention is not limited thereto and may have a rectangular shape surrounding the entire periphery of the exposure hole 20h.

[0108] In the above embodiment, the sandwiched portion 25 a of the insulating layer 25 is formed of an insulating material, but the present invention is not limited thereto and may be formed of a conductive material.

[0109] In addition, the clamped portion 25a may be omitted, and the discharge portion 21d of the conductive layer 21 may be exposed to the outside. In this case, the discharge portion 21d may be in direct contact with the conductive member 60, or a double-sided adhesive tape made of a conductive material or an insulating material may be provided between the discharge portion 21d and the conductive member 60. When the double-sided adhesive tape is made of an insulating material, the thickness of the double-sided adhesive tape is set to a degree that allows static electricity to be discharged from the conductive layer 21 to the conductive member 60.

[0110] In the above embodiment, the exposure hole 20h for exposing the display surface 10a is provided at a corner of the display plate 20 , but the position of the exposure hole 20h is not limited thereto. For example, the display surface 10a and the exposure hole 20h may be located below the pointer 72 or the pointer 73 .

[0111] In the above embodiment, the insulating layer 25 is formed over the entire area of ​​the back surface of the substrate 22 , but the present invention is not limited thereto and the insulating layer 25 may be formed only in an area corresponding to the conductive layer 21 .

Claims

1. A vehicle display device, characterized in that: have: a display panel formed with an exposure hole; A display element having a display surface, wherein the display surface is exposed through the exposure hole; A circuit substrate located at the back side of the display element and electrically connected to the display element; and a conductive member connected to a ground terminal of the circuit substrate, The display panel has: a conductive layer formed on the back side of the display panel, the conductive layer having a hole edge portion formed along at least a portion of the periphery of the exposure hole, and a discharge portion connected to the hole edge portion and facing the conductive member; and An insulating layer is formed on the back side of the conductive layer in order to hide the conductive layer from the outside.

2. The vehicle display device according to claim 1, characterized in that: The display element includes a lead terminal connected to the circuit substrate and located at a position opposite to one side of the periphery of the exposure hole. The hole edge portion of the conductive layer is formed along sides other than the one side around the exposure hole.

3. The vehicle display device according to claim 1, characterized in that: The display panel includes a light shielding layer formed on the surface side of the conductive layer. The light shielding layer has a decorative hole that allows the conductive layer to be visually exposed from the front side.

4. The vehicle display device according to claim 3, characterized in that: The decorative hole is formed in at least a portion of a periphery of the exposure hole.

5. The vehicle display device according to claim 3, characterized in that: With pointer, The decorative hole is formed in an arc shape along the rotation direction of the pointer.

6. The vehicle display device according to any one of claims 1 to 5, characterized in that: The vehicle display device includes a lens cover, which is located on the front side of the display panel, is inclined so as to approach the display panel as it goes downward, and faces the display panel. The exposure hole is located at the lower side of the display panel and is rectangular.

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