JP2019100752A - Display unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device capable of improving design even when a power source is turned off. SOLUTION: A display panel 12 having an on state for displaying information on a display screen 3 and an off state for not displaying information, a speedometer 2 having a pointer 11, and a viewer side surface of the display panel 12. It has a dial 13 provided on a certain front surface side and on the back surface side of the pointer 11. The dial 13 includes a panel-side display area 62 corresponding to the position of the display screen 3 of the display panel 12, an instrument-side display area 61 having an index 41 designated by the pointer 11 and designated by the pointer 11. Have. The dial 13 has a decorative layer on the surface side of the dial 13 in which a transparent pattern 68 that is visible to the viewer when in the off state is formed in the panel side display area 62 and the instrument side display area 61. [Selection diagram] Fig. 1

Description

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

  A vehicle such as a car is equipped with a display device for displaying information necessary for driving, such as a speedometer and an engine revolution number meter. As one of such display devices, there is known a digital display device which turns on and off a light source to display necessary information on a display panel.

JP, 2015-217815, A

  In the digital display device, when the display device is powered on, information is displayed on the display device and viewed by the user. On the other hand, when the power is not turned on, there is generally only a black flat panel. For this reason, compared with the members around the panel, there is no texture, and when the power is not turned on, a sense of discomfort is given.

  In particular, in the case of a display device in which a digital display device and a pointer type (mechanical type) instrument are combined, the difference in texture between the digital display device and the pointer type instrument when the power is not turned on is large, causing a large discomfort. I will give.

  The present invention has been made in consideration of such circumstances, and it is an object of the present invention to provide a display device capable of improving the design even when the power is off.

In order to solve the problems described above, the display device according to the present invention is provided on a display panel that displays information on a display screen, and a surface side that is a viewer-side surface of the display panel, and the display panel A dial plate having a panel side display area corresponding to a position of a display screen, the dial plate comprising a decorative layer having a transmissive pattern formed on the panel side display area, the surface of the dial plate Have on the side.

  In the display device according to the present invention, the design can be improved even when the power is off.

BRIEF DESCRIPTION OF THE DRAWINGS It is a front view which shows the display apparatus which is embodiment of the display apparatus which concerns on this invention, (A) is explanatory drawing which shows the ON state of a display apparatus, (B) is explanatory drawing which shows an OFF state. Sectional drawing which follows the II-II line of FIG. 1 (B). FIG. 3 is a partial enlarged view which is a part of FIG. 2 and which particularly shows the display screen side. Front view of the dial. The front view which shows the modification of a display apparatus. The front view which shows the other modification of a display apparatus. The front view which shows the further another modification of a display apparatus.

  An embodiment of a display device according to the present invention will be described based on the attached drawings. The display device according to the present invention is mounted on, for example, a vehicle such as a car or a two-wheeled vehicle, a ship, an agricultural machine, or a construction machine. In the present embodiment, the display device according to the present invention will be described using an example in which the display device for an automobile has a liquid crystal display panel and a speedometer.

  FIG. 1 is a front view showing a display device 1 which is an embodiment of a display device according to the present invention, (A) is an explanatory view showing an on state of the display device 1, and (B) shows an off state. FIG.

  FIG. 2 is a cross-sectional view taken along the line II-II in FIG.

  FIG. 3 is a part of FIG. 2 and is a partially enlarged view particularly showing the display screen 3 side.

  FIG. 4 is a front view of the dial 13.

  In the following description, the “surface side” means the near side in FIG. 1 and the upper side (upper case 73 side) in FIG. 2 that is viewed by a viewer (driver). "Back side" means the back side in FIG. 1 and the lower side in FIG.

  The display device 1 has a speedometer 2 and a display screen 3 which is a liquid crystal display screen. The speedometer 2 (instrument) is a pointer-type (mechanical) instrument that displays the speed of the vehicle. The display screen 3 displays various information such as travel distance, remaining amount of gasoline, navigation information and the like. The speedometer 2 and the display screen 3 are arranged side by side in the display device 1.

  The display device 1 mainly includes a pointer drive unit 10, a pointer 11, a display panel 12, a dial 13, a circuit board 14, and a case 15.

  The pointer driving unit 10 rotates the pointer shaft 21 in accordance with the speed of the input vehicle. The pointer 11 is connected to the pointer shaft 21 and points on the index 41 formed on the dial 13 corresponding to the speed by rotating on the surface parallel to the surface of the dial 13.

  In the display panel 12, the display panel 12 has a pair of surface glass substrates for sealing a liquid crystal layer. Transparent electrodes are formed on the pair of glass substrates by ITO (Indium Tin Oxide) or the like. The display panel 12 also has a pair of surface polarizing plates (polarizing filters) arranged so as to sandwich the pair of surface glass substrates. The display panel 12 is connected to the circuit board 14 via a flexible substrate such as a flexible printed circuit (FPC). The display panel 12 is controlled by the control unit of the circuit board 14 to apply a driving voltage to the liquid crystal layer through the transparent electrode. Thereby, the alignment of liquid crystal molecules in the liquid crystal layer is controlled, and the individual pixels of the display panel 12 are switched to the transmissive state or the non-transmissive state. The display panel 12 displays predetermined information on the display screen 3 by such a combination of pixels.

  Further, on the back side of the display panel 12, a backlight unit 31 (FIG. 3) is provided. The backlight unit 31 includes a light source such as an LED (Light Emitting Diode) and a light guide, and illuminates the display panel 12 from the back surface.

  The display panel 12 (display device 1) has an on state in which information is displayed on the display screen 3 and an off state in which information is not displayed. In the ON state, when the display device 1 is powered on and the control unit of the circuit board 14 controls the display panel 12, information such as the traveling distance is displayed on the display screen 3. In the on state of the speedometer 2, the indicator 41 is turned on by the light source passing through the dial 13, and the pointer 11 indicates the speed of the vehicle. In the off state, power is not supplied to the display device 1 and no information is displayed on the display screen 3. Moreover, the off state in the speedometer 2 is a state in which the indicator 41 is not lighted and the indicator 41 is not clearly viewed.

  The dial 13 is provided on the surface side of the display panel 12 and covers the display panel 12 including the display screen 3. The dial 13 is provided on the back side of the pointer 11. The dial 13 has an instrument side display area 61 and a panel side display area 62. The instrument-side display area 61 has an index 41 indicated by the pointer 11, and is an area mainly indicated by the index 41 (display area of the speedometer 2). The panel side display area 62 is an area substantially corresponding to the position of the display screen 3 of the display panel 12. The instrument side display area 61 and the panel side display area 62 have the same shape and are arranged symmetrically. In the present embodiment, the instrument-side display area 61 and the panel-side display area 62 have a true circular shape and are disposed symmetrically in the left-right direction.

  Decorative rings 60 and 60 (not shown in FIG. 3) are arranged at the outer edges of the instrument side display area 61 and the panel side display area 62.

  As shown in FIG. 3, the dial 13 has a base 65, a design layer 66, and a decoration layer 67. The substrate 65 is, for example, a plate-like member of polycarbonate resin having transparency (translucency). The design layer 66 is a printing layer printed with a black light-shielding ink formed on the back surface side (or front surface side) of the substrate 65. The design layer 66 has an index 41 such as a scale, numbers, characters, etc. formed in the shape of blank characters. The indicator 41 is lit and displayed by transmitting the light of the light source emitted from the side of the back surface 13 b of the dial 13. The decorative layer 67 is provided on the surface 13 a side of the dial 13, that is, on the substrate 65. Details of the decorative layer 67 will be described later.

  The circuit board 14 mainly includes a display panel 12, a driver and control unit for a light source, a light source, and a pointer driving unit 10.

  The control unit includes a central processing unit (CPU), a read only memory (ROM), a random access memory (RAM), and the like, and executes, for example, predetermined arithmetic processing in accordance with a program written in the ROM. The control unit acquires, for example, the vehicle speed, various vehicle information, and the like from an ECU (Electronic Control Unit) of the vehicle via various sensors and the like. The control unit drives and controls the speedometer 2 and the display screen 3 based on the acquired information.

  A light source is an LED (Light Emitting Diode), and illuminates the dial 13 from the back surface 13 b side.

  The case 15 has a middle case 71, a lower case 72, and an upper case 73. The middle case 71 is made of synthetic resin such as white, and fixes and supports the display panel 12, the dial 13 and the circuit board 14. The middle case 71 has a light shielding wall that surrounds the light source for the dial 13 and guides the light. The light shielding wall forms a cylindrical space by walls dividing the illumination (light emission) region of the light source, and the light passes through the cylindrical space. One end of the light shielding wall is in contact with the circuit board 14, and the other end (the surface of the middle case 71 facing the dial 13) is in contact with the rear surface 13 b of the dial 13.

  The upper case 73 and the lower case 72 are made of a synthetic resin such as black, and form an internal space formed by fitting, and the pointer drive unit 10, the pointer 11, the display panel 12 and the dial 13 are formed in this internal space. And accommodate the circuit board 14.

  Next, the details of the decoration layer 67 of the dial 13 will be described.

  As shown in FIG. 3, the decorative layer 67 is provided on the surface 13 a side of the dial 13. The decorative layer 67 is formed with a pattern 68 which allows the viewer to visually recognize when the display device 1 is in the off state shown in FIG. 1 (B). The pattern 68 is, for example, a concentric hairline pattern printed with transparent transparent ink.

  In the surface 13a of the dial 13, the reflectance of the portion where the pattern 68 is formed is larger than the reflectance of the portion of the dial 13 itself where the pattern 68 is not formed. Thereby, when the display panel 12 is in the off state, the pattern 68 is emphasized and the viewer visually recognizes the pattern 68. Since the pattern 68 is also provided on the speedometer 2 side, the speedometer 2 and the display screen 3 have a uniform appearance.

  On the other hand, when the display panel 12 is in the on state shown in FIG. 1A, since the pattern 68 is printed by the transmissive ink, it transmits the light of the light source. The brightness of the light of the light source transmitted through the pattern 68 (the dial 13) is greater than the brightness of the external light reflected by the pattern 68. For this reason, a viewer becomes difficult to visually recognize the pattern 68, and visually recognizes information displayed on the display screen 3 more clearly. Further, the indicator 41 also lights in the speedometer 2. For this reason, a viewer becomes difficult to visually recognize the pattern 68, and visually recognizes the speed displayed by the speedometer 2 more clearly.

  The display device 1 according to this embodiment can visually recognize the pattern 68 when the display device 1 is in the off state, so that the display panel 12 can feel a texture even in the off state, and the display device 1 Design can be improved. That is, in the off state, the indicator 41 and the pointer 11 exist on the speedometer 2 side, but nothing is displayed on the display screen 3. For this reason, the display screen 3 only has a black flat plate, which may give a sense of incongruity to the lack of texture compared to the speedometer 2 or may lack the appearance as the display device 1. However, since the display device 1 in the present embodiment has the pattern 68 in the panel side display area 62, it is possible to alleviate the discomfort given to the viewer.

  Further, since the pattern 68 is also provided in the instrument-side display area 61, the speedometer 2 and the display screen 3 can have a uniform appearance. Further, in particular, since the patterns 68 of the panel side display area 62 and the instrument side display area 61 are unified (in the same pattern), the display device 1 can have a sense of unity in the entire display device 1.

  Moreover, since the pattern 68 is printed with the permeable ink, the display 68 does not have the pattern 68 visually recognized by the viewer in the ON state. For this reason, the display device 1 does not disturb the visibility of the information on the display screen 3. Moreover, when switching from the off state to the on state, a visual effect that information appears from the pattern 68 can be produced on the display screen 3, and the value as the display device 1 can be increased.

  While certain embodiments of the present invention have been described, these embodiments have been presented by way of example only, and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and the gist of the invention, and are included in the invention described in the claims and the equivalent scope thereof.

  For example, the pattern 68 is not limited to the concentric hair line described above. For example, FIG. 5 is a front view showing a modified example of the display device 1. The dial 13 may have a carbon-like pattern 80.

  The pattern 68 may be combined with a logo such as a company name or a product name. In this case, the decorative layer 67 can form a logo on the pattern 68 in a letter shape without forming the pattern 68 only in the portion corresponding to the logo. Further, by illuminating only the logo portion with the light source when the display panel 12 is in the on state, the display device 1 can improve the designability in the on state as well as in the off state.

  Further, the pattern 68 can be formed by various methods such as die transfer and scribing processing other than printing.

  The instrument side display area 61 and the panel side display area 62 may have an area having a pattern and an area not having a pattern. For example, FIG. 6 is a front view showing another modified example of the display device 1.

  The display screen 3 has a first display area 3a and a second display area 3b. The second display area 3 b is an area for displaying second information which is relatively important information in the information in the display screen 3. In the example of FIG. 6, the second display area 3 b is an area where a warning to be displayed to the driver is displayed, and is located at the center in the display screen 3. The first display area 3 a is an area other than the first display area 3 a in the display screen 3. In the example of FIG. 6, the first display area 3 a is an area on the outer peripheral side of the display screen 3 in which no information is displayed.

  The panel side display area 62 has a first panel side display area 62a and a second panel side display area 62b. The first panel display area 62a corresponds to the first display area 3a of the display screen 3, and is an area provided at the same position as the first display area 3a. The second panel side display area 62 b corresponds to the second display area 3 b of the display screen 3 and is an area provided at the same position as the second display area 3 b.

  Moreover, the meter side display area 61 has the 1st meter side display area 61a and the 2nd meter side display area 61b. The first instrument-side display area 61a corresponds to the first panel-side display area 62a, and is an area provided at the same position as the first panel-side display area 62a in the first instrument-side display area 61a. . The second instrument-side display area 61b corresponds to the second panel-side display area 62b, and is an area provided at the same position as the second panel-side display area 62b in the second instrument-side display area 61b. . That is, the first panel side display area 62a and the first instrument side display area 61a, and the second panel side display area 62b and the second instrument side display area 61b are symmetrical in the horizontal direction in the display device 1. It is arranged.

  The first panel side display area 62 a and the first instrument side display area 61 a have a pattern 90. On the other hand, the second panel side display area 62 b and the second instrument side display area 61 b do not have the pattern 90. As a result, when the display panel 12 is in the on state, the second information displayed in the second display area 3b, which is more important information, causes the pattern 90 to be viewed due to reflection of external light or the like. There is no hindrance to visibility by

  Further, in order to further enhance the visibility of the second information, the second panel display area 62b may be an opening in which the base material 65 is cut out.

  Furthermore, the first panel side display area 62a and the second panel side display area 62b of FIG. 6 may have different patterns. Similarly, the first instrument side display area 61a and the second instrument side display area 61b may have different patterns. For example, FIG. 7 is a front view showing still another modified example of the display device 1.

  The first display area 3a is an area for displaying the first information which is the state 95a of the battery and the remaining amount of gasoline 95b. The second display area 3b is an area for displaying second information which is a history 96a of energy consumption.

  The first instrument side display area 61a and the first panel side display area 62a have a hairline pattern 97. On the other hand, the second instrument side display area 61 b and the second panel side display area 62 b have a carbon-like pattern 98 different from the pattern 97. As a result, when the display device 1 is in the off state, the viewer can recognize the boundary of the display area based on the fact that the display panel 12 has a plurality of display areas for displaying information and the difference between the patterns 97 and 98. Further, for example, even when information is displayed only in the first display area 3a and information is not displayed in the second display area 3b, the pattern 98 is visually recognized in the second display area 3b. The viewer can be made to recognize that it is an area in which some information is displayed.

  When the decorative layer 67 is a printing layer, not only the patterns are different between the first panel side display area 62a and the second panel side display area 62b, but also the color of the transmissive ink is made different (transmission) The same effect as described above can be obtained by printing a pattern with different rate ink.

  Furthermore, the dial 13 may have a dial side pattern continuously formed with the pattern 68 provided in the instrument side display area 61 and the panel side display area 62. Thereby, a sense of unity (seamlessness) between the speedometer 2 and the display screen 3 and the dial 13 in the vicinity of the speedometer 2 and the display screen 3 can be obtained, and the designability in the off state is further improved. Can.

  The panel side display area 62 of the dial 13 may be separate from the dial 13. That is, the panel side display area 62 may have an opening or transparency in the dial 13 and a plate member or film in which a layer corresponding to the decorative layer 67 is formed may be provided on the surface side of the display panel 12 .

  The display panel 12 may be a segment-type liquid crystal display panel, an organic EL (Electro-Luminescence) panel, a matrix-type liquid crystal display panel such as a TFT (Thin Film Transistor), or an organic EL panel.

  In the present embodiment, the instrument-side display area 61 and the panel-side display area 62 have a true circular shape and are disposed symmetrically in the left-right direction, but the instrument side display area 61 having a true circular shape is located at the center, A panel-side display area 62 having a right circular shape may be disposed symmetrically on the left and right. Also, the instrument display area 61 may have a panel display area different from the panel display area 62.

1 Display 2 Speedometer (Instrument)
3 Liquid Crystal Display Screen (Display Screen)
3a first display area 3b second display area 10 pointer drive unit 11 pointer 12 display panel 13 dial 13a front surface 13b back surface 14 circuit board 15 case 21 pointer shaft 31 back light unit 41 index 60 decoration ring 61 instrument side display area 61a first instrument side display area 61b second instrument side display area 62 panel side display area 62a first panel side display area 62b second panel side display area 65 base 66 design layer 67 decorative layer 68, 80, 90, 97, 98 Pattern 71 Middle Case 72 Lower Case 73 Upper Case

Claims (5)

A display panel that displays information on the display screen,
A dial provided on a front surface side which is a viewer-side surface of the display panel and having a panel side display area corresponding to the position of the display screen of the display panel;
The display device, wherein the dial has a decorative layer in which a transmissive pattern is formed in the panel side display area, on the surface side of the dial. Further equipped with an instrument with a pointer,
The dial is provided on the back side of the pointer, has an indicator indicated by the pointer, and has an instrument-side display area which is an area indicated by the pointer.
The display device according to claim 1, wherein the dial has the decoration layer on the surface side of the dial in the instrument-side display area.   The display device according to claim 2, wherein the panel side display area and the instrument side display area are symmetrically arranged in the same shape. The display screen has a first display area for displaying first information and a second display area for displaying second information,
The panel side display area includes a first panel side display area corresponding to the first display area, and a second panel side display area corresponding to the second display area.
The instrument side display area has a first instrument side display area corresponding to the first panel side display area, and a second instrument side display area corresponding to the second panel side display area. ,
The first panel side display area and the first instrument side display area have the pattern, and the second panel side display area and the second instrument side display area have the pattern. The display device according to claim 3. The display screen has a first display area for displaying first information and a second display area for displaying second information,
The panel side display area includes a first panel side display area corresponding to the first display area, and a second panel side display area corresponding to the second display area.
The instrument side display area has a first instrument side display area corresponding to the first panel side display area, and a second instrument side display area corresponding to the second panel side display area. ,
The pattern of the first panel side display area and the first instrument side display area is different from the pattern of the second panel side display area and the second instrument side display area. Display device.

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