JP2020038109A - Display board - Google Patents

Abstract

To provide a display board which can improve design performance.SOLUTION: A display board having a plurality of lines for forming a lattice, and a plurality of inside regions formed by the lines, and also having a pattern part in which the lines and the inside regions are alternately arranged with respect to a first direction, comprises: a base material 61; a line forming layer 64 for forming the lines at a front side of the base material 61; an inside region forming layer 65 for forming the inside regions at a front side of the line forming layer 64; a first transparent layer 68 formed in a point corresponding to at least each inside region at a front side of the inside region forming layer 65 while having a gradation so as to become coarse from dense along the first direction; and a second transparent layer 69 formed in a point corresponding to at least each inside region at a front side of the first transparent layer 68 being a range narrower than the first transparent layer 68 at each inside region while having a gradation so as to become coarse from dense along the first direction.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a display panel of a display device mounted on a vehicle or the like.

  2. Description of the Related Art A vehicle such as an automobile is equipped with a display device that displays information necessary for driving, such as a speedometer and an engine speed meter. The display device has a display plate. The display plate is generally manufactured by printing a design such as scales, characters, numbers, and symbols, a pattern serving as a background, and a ground color on a transparent substrate by, for example, screen printing.

JP 2010-216941 A

  With the diversification of today's designs, there is a case where it is required to give a three-dimensional effect according to the pattern serving as the background of the display panel. However, conventional display panels generally have only a single layer of glossy or glossy overcoat layer (transparent layer) over the entire surface of the display panel, and the pattern of the display panel has a three-dimensional appearance. It was not enough to make it happen.

  The present invention has been made in view of such circumstances, and has as its object to provide a display panel capable of improving design.

  In order to solve the above-described problem, the display panel according to the present invention includes a plurality of lines forming a grid, and a plurality of inner regions formed by the lines, and the lines in the first direction, the lines, A display panel having a pattern portion in which inner regions are alternately arranged, the base material, a line forming layer that forms the line on the front side of the base material, and the front side of the line forming layer, An inner region forming layer forming an inner region; and a gradation formed at least at a position corresponding to each of the inner regions on a front surface side of the inner region forming layer, so that the gradation is formed from dense to coarse along the first direction. A first transparent layer formed on the front side of the first transparent layer, at least at a location corresponding to each of the inner regions, and formed in each of the inner regions in a narrower range than the first transparent layer. And in the first direction And a second transparent layer which is formed with a gradation so that in the coarse of fine I.

  In the display panel according to the present invention, design properties can be improved.

FIG. 1 is a front view showing a display device having a display panel as one embodiment of a display panel according to the present invention. FIG. 2 is a sectional view taken along the line II-II in FIG. 1. FIG. 3 is a cross-sectional view taken along the line III-III of FIG. 1, particularly a cross-sectional view showing a display panel. FIG. 4 is an enlarged view of a region IV in FIG. 3. FIG. 5 is a cross-sectional view taken along line VV of FIG. 1, particularly a cross-sectional view showing a display panel. Explanatory drawing of the pattern part when visually recognized by the viewer.

  An embodiment of a display panel according to the present invention will be described with reference to the accompanying drawings. The display panel according to the present invention is mounted on vehicles such as automobiles and motorcycles, ships, agricultural machines, and construction machines, for example. In the present embodiment, an example in which the display panel according to the present invention is a display panel of a display device for a vehicle having a speedometer will be described.

FIG. 1 is a front view showing a display device 1 having a display panel 10 which is one embodiment of a display panel according to the present invention.
FIG. 2 is a sectional view taken along the line II-II in FIG.
FIG. 3 is a cross-sectional view taken along the line III-III of FIG.

  In the following description, “front (front)”, “rear (back)”, “up”, “down”, “right”, and “left” refer to FIGS. 1 to 3 and FIGS. According to the definitions “Fr.”, “Re.”, “To.”, “Bo.”, “R”, and “L” therein.

  The display device 1 has a speedometer 3. The speedometer 3 (instrument) is a pointer-type instrument that displays the speed of the vehicle. The display device 1 mainly includes the hands 20, the display panel 10, the circuit board 30, the case 40, and the dial member 50.

  The pointer 20 is connected to the pointer driving unit 32 on the circuit board 30 via the pointer base 21. The pointer 20 indicates the scale 11 of the display panel 10 corresponding to the speed by rotating on a plane parallel to the plane of the display panel 10.

  The display panel 10 is supported on the middle case 42 on the front side of the circuit board 30 and on the rear side of the hands 20. The display panel 10 includes a base material 61 and a plurality of layers 62 to 69 stacked on the base material 61. Details of the base material 61 and the plurality of layers 62 to 69 laminated on the base material 61 will be described later.

  The circuit board 30 mainly includes a plurality of light sources 31, a pointer driving unit 32, and a control unit including a driver of the light source 31 and the pointer driving unit 32 and the like. The circuit board 30 is supported by the lower case 41 and the middle case 42.

  The light source 31 is provided on the front surface 30 a of the circuit board 30. The light source 31 is, for example, a top-view (top-emitting) LED (Light Emitting Diode). A plurality of light sources 31 are provided according to the number and positions of the designs of the display device 1.

  The pointer driving unit 32 is connected to the pointer 20 (the pointer base 21) via the pointer shaft 33, and rotates the pointer 20 according to the input traveling speed of the vehicle.

  The control unit includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like, and executes predetermined arithmetic processing according to, for example, a program written in the ROM. The control unit acquires various vehicle information from, for example, an ECU (Electronic Control Unit) of the vehicle. The control unit turns on the light source 31 and drives the pointer driving unit 32 based on the acquired information.

  The case 40 has a lower case 41 and a middle case 42.

  The lower case 41 covers the rear side of the circuit board 30 and fits with the facing member 50 to form the outer shape of the display device 1. The lower case 41 is a light-shielding resin (for example, black polypropylene).

  The middle case 42 is a light-shielding resin (for example, white polypropylene), and supports the circuit board 30 inside the lower case 41. The middle case 42 has a partition wall 45 surrounding each light source 31 and forming a section 46. The partition wall 45 is a cylindrical wall that extends forward after partitioning the illumination (light emission) area of the light source 31, and the light of the light source 31 passes through the partition 46 from the rear side to the front side. The partition wall 45 has a substrate side opening end 47 and a display panel side opening end 48. The board-side opening end 47 is an opening end located on the rear side, and is in contact with the circuit board 30. The display plate side opening end 48 is an opening end located on the front side, and is in contact with the display plate 10.

  The facing member 50 is a light-shielding resin (for example, a black polypropylene resin), and is disposed on the front side of the display panel 10. The look-back member 50 shields the area other than the display area of the display panel 10 from light. The facing member 50 has an opening 52 to which a cover 51 made of a translucent resin material is attached.

  Next, details of the display panel 10 will be described.

FIG. 4 is an enlarged view of a region IV in FIG.
FIG. 5 is a cross-sectional view taken along the line VV of FIG. 1, and particularly a cross-sectional view showing the display panel.

  The display panel 10 includes a base material 61, a design layer 62, a light shielding layer 63, a line forming layer 64, an inner region forming layer 65, a line gradation forming layer 66, It has an overcoat layer 67, a second overcoat layer 68, and a third overcoat layer 69.

  The display panel 10 having these layers forms a particularly circular pattern portion 70 as shown in FIG. The pattern portion 70 has a plurality of lines 72 forming a lattice 71 and a plurality of inner regions 73 formed by the lines 72. The lattice 71 is formed by crossing a horizontal line 72a extending in the left-right direction and a vertical line 72b extending in the vertical direction at a right angle, and the inner region 73 is formed in a square shape. In the present embodiment, the line 72 and the inner region 73 are alternately arranged with respect to the first direction, with the upward direction being particularly the first direction.

  The base material 61 is a plate-like member made of a resin having translucency (transparency) (for example, polycarbonate resin).

  The design layer 62 is printed with white translucent ink. The design layer 62 is formed at least at a position where the design such as the scale 11 and the numerals / characters 12 is provided and where the light of the light source 31 is transmitted. That is, the design layer 62 expresses the color of the design such as the scale 11 and the numerals / characters 12.

  The light blocking layer 63 is printed with black light blocking ink. The light-shielding layer 63 is formed in a character shape without a design portion. Thereby, the light-shielding layer 63 transmits the light of the light source 31 in the design, and shields the other areas from light.

  The line forming layer 64 is a layer that forms the line 72 on the front side of the base material 61. The line forming layer 64 is a printing layer printed with gray ink. The line forming layer 64 is formed at least at a position where the line 72 of the pattern portion 70 is provided. That is, the line forming layer 64 expresses the color of the line 72.

  The inner region forming layer 65 is a layer that forms a square inner region 73 on the front side of the line forming layer 64. The inner region forming layer 65 is printed with the same black ink as the light shielding layer 63. As a result, in the region where the inner region forming layer 65 is not formed, the line forming layer 64 is exposed, and the gray line 72 is expressed.

  The line gradation forming layer 66 is formed on the front side of the line forming layer 64 at a location corresponding to each line 72 in a color different from the color of the line forming layer 64. Specifically, the line gradation forming layer 66 is printed with the same black ink as the inner region forming layer 65, and is formed in the same step as the inner region forming layer 65. As shown in FIG. 5, the linear gradation forming layer 66 is formed to have a gradation 75 so as to be dense to coarse along the second direction. In the present embodiment, a direction from the periphery 70a of the pattern portion 70 toward the center is defined as a second direction.

  The first overcoat layer 67 (third transparent layer) is formed on at least the pattern portion 70 between the inner region forming layer 65 and the second overcoat layer 68 (first transparent layer). The first overcoat layer 67 is printed with a matte transparent ink. The first overcoat layer 67 is formed on the entire display panel 10 and preferably protects the surface of the display panel 10.

  The second overcoat layer 68 (first transparent layer) is formed on the front side of the first overcoat layer 67 (the inner region forming layer 65) at a position corresponding to each line 72 and each inner region 73. The second overcoat layer 68 is a glossless transparent ink, and is printed with an ink having a glossiness more than the ink of the first overcoat layer 67. That is, the matte degree of the ink of the first overcoat layer 67 is higher than the matte degree of the ink of the second overcoat layer 68. As shown in FIGS. 1 and 4, the second overcoat layer 68 is formed to have a gradation 76 from the dense to the coarse along the first direction.

  Specifically, in the second overcoat layer 68, the line 72 portion becomes the densest in the first direction (the width along the first direction becomes larger in the cross section of FIG. 4), and extends from the line 72 to the inner region 73. It is formed so as to be rough (the width along the first direction is small). In the present embodiment, the second overcoat layer 68a is formed on the entire line 72 (solid coating), and four streak-like second overcoat layers 68b having different widths are formed in each inner region 73. In the second overcoat layer 68, such coarseness and denseness appear repeatedly with the repetition of the line 72 and the inner region 73 in the first direction.

  The third overcoat layer 69 (second transparent layer) is formed on the front side of the second overcoat layer 68 at a location corresponding to each line 72 and each inner region 73. The third overcoat layer 69 is a glossy transparent ink, and is printed with an ink having a glossier feeling than the ink of the second overcoat layer 68. That is, the matte degree of the ink of the second overcoat layer 68 is higher than the matte degree of the ink of the third overcoat layer 69. Like the second overcoat layer 68, the third overcoat layer 69 is formed with a gradation 77 from the dense to the rough along the first direction. Further, the third overcoat layer 69 is formed in a range narrower than the second overcoat layer 68 in each inner region 73.

  More specifically, the third overcoat layer 69 is formed so that the line 72 portion becomes densest in the first direction and becomes rough from the line 72 to the inner region 73. In the present embodiment, the third overcoat layer 69a is formed with a width smaller than the second overcoat layer 68a solidly painted on the line 72, and each inner region 73 has a width smaller than the second overcoat layer 68b. Thus, two stripe-shaped third overcoat layers 69b having a smaller number than the second overcoat layers 68b having different widths were formed. In the third overcoat layer 69, such coarseness and denseness appear repeatedly with the repetition of the line 72 and the inner region 73 in the first direction.

  In the display panel 10 according to the present embodiment, a transparent layer including two layers of the second overcoat layer 68 and the third overcoat layer 69 is formed in each inner region 73 with gradations 76 and 77. Thereby, a three-dimensional effect is created in the lattice-shaped pattern portion 70, and the design property can be improved. Further, the glossiness of the ink of the first overcoat layer 67, the second overcoat layer 68, and the ink of the third overcoat layer 69 were changed so as to change the intensity of light reflection. Thereby, the reflection of light becomes step-like, and the display panel 10 can have a more three-dimensional appearance. In particular, the ink of the third foremost third overcoat layer 69 was a glossy transparent ink having the strongest light reflection. Thereby, the reflection of the light on the foreground stands out, and the display panel 10 can have a more three-dimensional appearance.

  Further, in the display panel 10, a gradation 75 was formed by the linear gradation forming layer 66 from the periphery 70 a of the regular circular pattern portion 70 toward the center. For this reason, the viewer can visually recognize the pattern portion 70 as if it were a curved surface as shown in FIG. 6, for example, and the display panel 10 can have a more three-dimensional appearance. Further, due to the synergistic effect of the gradation 75 of the line 72 by the line gradation forming layer 66 and the gradations 76 and 77 of the inner region 73 of the second overcoat layer 68 and the third overcoat layer 69, the inner region 73 has a dimple shape. It can be visually recognized as if it were a concave 78.

  Although several embodiments of the present invention have been described, these embodiments are provided by way of example and are not intended to limit the scope of the invention. These new embodiments can be implemented in other various forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and their equivalents.

  For example, the grid is not limited to being formed by a plurality of lines extending in two orthogonal directions, and may be formed by a curve. The pattern portion may be a crocodile pattern, a tatami pattern, a scale pattern, or a polygonal pattern other than a square.

  The first direction and the second direction as gradation directions are not limited to the above-described example. The first direction and the second direction may be the same direction.

  The colors of the line forming layer 64 and the inner region forming layer 65 described above are merely examples, and are not limited thereto.

  The gradation of the inner region only needs to be formed at least at a position corresponding to the inner region, and is not essential for a position corresponding to the line. Further, the gradation 75 (the line gradation forming layer 66) is not essential, and the line 72 may be solid.

  The relative relationship of the glossiness of the first to third overcoat layers 67 to 69 described above is not limited to the above, and may be set according to the visual effect of the pattern portion.

DESCRIPTION OF SYMBOLS 1 Display device 3 Speedometer 10 Display board 11 Scale 12 Numbers / characters 20 Hands 21 Hand base 30 Circuit board 30a Front surface 31 Light source 32 Hand drive unit 33 Hand shaft 40 Case 41 Lower case 42 Middle case 45 Partition wall 46 Section 47 Board side Opening end 48 Display panel side opening end 50 Lookout member 51 Cover 52 Opening 61 Base material 62 Design layer 63 Light shielding layer 64 Line forming layer 65 Inner region forming layer 66 Line gradation forming layer 67 First overcoat layer 68, 68a, 68b 2 overcoat layers 69, 69a, 69b third overcoat layer 70 pattern portion 70a peripheral edge 71 lattices 72, 72a, 72b line 73 inner regions 75, 76, 77 gradation 78 recess

Claims (5)

A display panel, comprising: a plurality of lines forming a grid; and a plurality of inner regions formed by the lines, wherein the line and the inner regions are arranged alternately in a first direction. ,
With the base material,
On the front side of the base material, a line forming layer that forms the line,
On the front side of the line forming layer, an inner region forming layer that forms the inner region,
A first transparent layer formed on the front surface side of the inner region forming layer at least at a position corresponding to each of the inner regions, and formed with a gradation from dense to coarse along the first direction;
On the front side of the first transparent layer, at least a portion corresponding to each of the inner regions, formed in each of the inner regions in a narrower range than the first transparent layer, and from a dense area along the first direction. A second transparent layer formed with a gradation so as to be coarse.   The display panel according to claim 1, wherein the second transparent layer is formed of a material having a glossiness different from that of the first transparent layer.   The display panel according to claim 1, wherein the first transparent layer and the second transparent layer are formed such that the line portions are densest in the first direction and are coarse from the lines to the inner region. .   The display panel according to claim 1, further comprising a third transparent layer formed at least on the pattern portion between the inner region forming layer and the first transparent layer.   On the front side of the line forming layer, a color different from the color of the line forming layer is formed at a location corresponding to each of the lines, and formed with a gradation such that the color becomes coarse from dense to coarse along the second direction. The display panel according to claim 1, further comprising a line gradation forming layer.

Images