JP2007156104A - Light-transmitting display panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a light-transmitting display panel whose productivity can be improved. <P>SOLUTION: The light-transmitting display panel 10 comprises an acrylic member 12, a coating section 14 where a black coating part 16 and a light transmission part 18 are formed, a PC sheet 20, an adhesive 22, and a color print layer 28. A light-transmitting display panel 10 is so constituted that the color print layer 28 is fitted to the acrylic member 12 on the side of the coating section 14 across the PC sheet 20 and adhesive 22, so when the light-transmitting display panel 10 is manufactured, the light transmission part 18 need not be provided with a clear coating and the productivity of the light-transmitting display panel 10 can be improved. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a translucent display panel that can be applied to, for example, an upper cover that covers a shift lever device of a vehicle.

  A translucent display panel using black paint is used as an upper cover of the shift lever device.

  This translucent display panel is provided with a light-shielding black coating on the back side of a translucent substrate (for example, acrylic resin). Here, the light transmission part (non-coating part) of display shape is formed in a part in the painting part. A thermal transfer foil for imparting a color to the display shape is pasted on the light transmitting portion and its periphery by a hot stamping method (see, for example, Patent Document 1 as a technique for imparting a thermal transfer foil to a coating portion) ).

  However, in the vicinity of the periphery of the light transmission portion, a step is formed at the boundary between the painted portion and the light transmission portion that is a recess, and in this step portion, there is a gap between the thermal transfer foil and the coating portion. Since the heat transfer foil is thin, it may be bent and peeled off from the painted part, or may be cracked.

  Therefore, the concave portion, which is the light transmitting portion, is filled with a clear coating process to eliminate the above-described stepped portion, and the thermal transfer foil is applied to the portion that has been subjected to the clear coating process so that the unevenness of the surface to which the thermal transfer foil is applied is reduced. is doing.

However, since the clear coating process must be performed on the light transmitting portion, the number of manufacturing processes increases, and the productivity of the light transmitting display panel decreases.
JP 2003-15556 A

  In view of the above problems, an object of the present invention is to obtain a translucent display panel capable of improving productivity.

  According to the first aspect of the present invention, a light-transmitting base material, a light-shielding property, a light-transmitting portion having a display shape formed in part on the one side of the base material is subjected to a coating treatment. A coating portion formed, a transparent sheet formed in a sheet shape and disposed on the coating portion side of the base material, and provided directly or indirectly on the base material side of the transparent sheet, The adhesive that fixes the transparent sheet to the coating part around and the color different from the coating part, provided on one side or the other side of the transparent sheet, and the fixing of the transparent sheet by the adhesive And a color display layer facing the light transmission portion in a state.

  In the first aspect of the invention, since the color display layer is attached to the painted portion side of the base material via a transparent sheet and an adhesive, when the translucent display panel is manufactured, the light transmitting portion is cleared. There is no need to paint, and the productivity of the transmissive display panel can be improved. Further, by making the transparent sheet a separate body, it is easy to adjust the color tone of the color display layer and to adjust the light, thereby improving productivity.

  The invention described in claim 2 is characterized in that, in the invention described in claim 1, the adhesive provided between the transparent sheet and the coating portion is provided in a portion not corresponding to the light transmission portion.

  In the second aspect of the present invention, no adhesive is provided on the portion facing the light transmission portion. For this reason, the color of this color display layer can be clearly displayed on the viewer side opposite to the color display layer with respect to the base material.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the adhesive surrounds the light transmitting portion, and a communication path that communicates a region surrounded by the adhesive with the outside is provided. It is provided.

  In the invention according to claim 3, since the area surrounded by the adhesive is communicated with the outside, the air in this area can escape to the outside, and the abnormality in the area at the time of assembly or temperature change There is no significant pressure increase.

(First embodiment)
FIG. 1 is a plan view showing the main part of a translucent display panel 10 according to an embodiment of the present invention. FIG. 2 shows the main part of the translucent display panel 10 from an oblique direction. It is shown in a sectional view (a sectional view taken along line 2-2 in FIG. 1). 3 is a cross-sectional view (a cross-sectional view taken along the line 3-3 in FIG. 1) of the main part of the translucent display panel 10, and FIG. 4 illustrates the translucent display panel. 10 is shown in a perspective view corresponding to FIG. Hereinafter, a case where the translucent display panel 10 is applied to an upper cover that covers a shift lever device of a vehicle will be described as an example.

  The translucent display panel 10 includes an acrylic member 12 as a base material. The main part of the acrylic member 12 is flat. The acrylic member 12 is made of an acrylic resin material and has translucency.

  A coating portion 14 is provided on the back surface (one side) of the acrylic member 12. The painted portion 14 has a black painted portion 16, and this black painted portion 16 is formed by applying black coating as a coating process on the back surface of the acrylic member 12 and has a light shielding property. .

  Moreover, the coating part 14 has the light transmissive part 18 of a display shape. The light transmitting portion 18 is formed, for example, by irradiating the black coating with laser light in accordance with the display shape to be formed and peeling off the black coating of the irradiated portion. Here, an example in which the light transmitting portion 18 has a shape corresponding to the alphabet letter “R” as a display shape is illustrated, but the paint portion 14 has other display characters indicating other shift ranges, For example, shapes corresponding to “P”, “N”, “SD”, “+”, and “−” are also formed by the light transmitting portion 18 (not shown).

  In addition, a PC sheet (polycarbonate sheet) 20 as a transparent sheet formed in a sheet shape is disposed on the coating portion 14 side of the acrylic member 12.

  As shown in FIG. 4, the acrylic sheet 12 side of the PC sheet 20 has a frame shape, and as shown in FIG. 3, a position where one side of the thin adhesive 22 corresponds to the periphery of the light transmitting portion 18. It is glued to. The other surface of the adhesive 22 is brought into pressure contact with the coating portion 14 to fix the PC sheet 20 to the coating portion 14 around the light transmission portion 18 and to fix the PC sheet 20 shown in FIGS. As shown in FIG. Thus, the adhesive 22 provided between the PC sheet 20 and the coating part 14 is provided in a part not corresponding to the light transmission part 18. Further, as shown in FIG. 4, the adhesive 22 is provided with a communication path 24 in which a part of the frame shape is cut, and the communication path 24 is formed on the inner side surrounded by the adhesive 22 in a frame shape. The area 26 is in communication with the outside.

  In a region 26 surrounded by the adhesive 22, a color print layer 28 as a color display layer is provided on the acrylic member 12 side of the PC sheet 20, and the color print layer 28 faces the light transmission portion 18. ing. The color print layer 28 has a color (color other than black, such as red or yellow) different from the black paint portion of the paint portion 14, and is fixed to the PC sheet 20 by printing or adhesion. Yes. For this reason, when viewed from the opposite side of the color printing layer 28 with respect to the acrylic member 12 (the surface side of the acrylic member 12 and the vehicle interior P side), the shape corresponding to the display shape is the color of the black painted portion 16. Displayed in different colors. Note that the color printing layer 28 is separated from the black coating portion 16 around the light transmitting portion 18 in a state where the PC sheet 20 is fixed to the black coating portion 16 by deformation such as making the color printing layer 28 thin. Thus, the region 26 surrounded by the adhesive 22 and the region 18A in the light transmission part 18 can be communicated with each other.

  Furthermore, the color printing layer 28 has translucency. Corresponding to the color print layer 28, a lamp 30 as a light source transmits light on the opposite side of the acrylic sheet 12 with respect to the PC sheet 20 (the back side of the acrylic member 12 and the inside M side of the shift lever device). It is provided facing the portion 18. When the light 30 is turned on, on the opposite side of the color printing layer 28 (inside the room P), the shape corresponding to the display shape (characters “R”, “P”, “N”, “S-” indicating the shift range). D ”,“ + ”and“ − ”are clearly displayed.

  Next, the manufacturing procedure of the translucent display panel 10 will be described.

  First, a black coating process is performed on the entire back surface of the acrylic member 12.

  Next, the light transmission portion 18 is formed by irradiating the black coating on the back surface of the acrylic member 12 with the laser beam in accordance with the display shape to be formed, and removing the black coating on the irradiated portion. At this time, the portion other than the light transmission portion 18 where the black coating is left is the black coating portion 16. In this way, the painted portion 14 is formed on the back surface of the acrylic member 12.

  On the other hand, the color printing layer 28 is fixed to one side of the PC sheet 20 by adhering one side of the adhesive 22 and performing printing or adhesion treatment. At this time, the adhesive 22 is formed in a frame shape, and a part 24 of the adhesive 22 is cut out (the communication path 24 is formed) so that the color printing layer 28 is accommodated in the frame of the adhesive 22. Alternatively, the color printing layer 28 may be first fixed to one side of the PC sheet 20 and then one side of the adhesive 22 having the above shape may be adhered so as to surround the color printing layer 28.

  Next, the PC sheet 20 thus provided with the adhesive 22 and the color printing layer 28 is attached to the back side of the acrylic member 12. At this time, the PC sheet 20 is positioned so that the color printing layer 28 faces the light transmitting portion 18, and the other surface of the adhesive 22 is bonded to the periphery of the light transmitting portion 18. In this way, the PC sheet 20 is fixed to the black painted portion 16 of the acrylic member 12. Here, since the area 26 surrounded by the adhesive 22 is communicated with the outside by the communication path 24, the air in the area 26 can escape to the outside, and the inside of the area 26 at the time of assembly or temperature change can be obtained. There is no abnormal pressure rise.

  The translucent display panel 10 can be manufactured by the manufacturing procedure as described above. Here, the translucent display panel 10 has a configuration in which the color print layer 28 is attached to the coating portion 14 side of the acrylic member 12 via the PC sheet 20 and the adhesive 22, so that the translucent display panel 10 is manufactured. In this case, the color printing layer 28 can be attached to the acrylic member 12 via the PC sheet 20 without applying the clear coating to the light transmitting portion 18, and the productivity of the light transmitting display panel 10 can be improved. Further, by making the PC sheet 20 a separate body, it is easy to adjust the color tone and light control of the color printing layer 28, and the productivity is improved.

  Next, the operation of the first embodiment will be described.

  When the light control switch of the vehicle is operated and turned on, on the inside M side of the shift lever device, the lamp 30 is turned on and the PC sheet 20 is irradiated with light. At this time, since the PC sheet 20 is a transparent sheet, the color printing layer 28 is also irradiated with light from the lamp 30 via the PC sheet 20. Since the color printing layer 28 has translucency, the light from the lamp 30 passes through the color printing layer 28 and further through the light transmitting portion 18 of the coating portion 14, passes through the acrylic member 12, and proceeds to the vehicle interior P side. The display shape can be clearly recognized by the passenger on the P side of the vehicle interior. At this time, not only the display shape corresponding to the alphabet letter “R” indicating the shift range but also the letters “P”, “N”, “SD” indicating other shift ranges are displayed by the light irradiated by the lamp 30. Display shapes corresponding to “,” “+” and “−” are also clearly displayed.

  Here, in the translucent display panel 10, the adhesive 22 provided between the PC sheet 20 and the coating portion 14 is provided so as to surround the light transmission portion 18. The adhesive 22 is not provided. For this reason, the color of the color print layer 28 can be displayed more clearly to the passenger on the side of the vehicle interior P.

  Further, in the translucent display panel 10, since the area 26 surrounded by the adhesive 22 is communicated with the outside by the communication path 24, the air in the area 26 can escape to the outside, and the temperature changes. There is no abnormal pressure rise in region 26 at

The translucent display panel 10 of the present embodiment is configured such that the PC sheet 20 is applied as a transparent sheet, but instead, a sheet-like member made of a resin other than polycarbonate is applied as the transparent sheet. It is good also as a structure to be.
(Second Embodiment)
Next, a translucent display panel 10 according to a second embodiment of the present invention will be described. In addition, the same code | symbol is attached | subjected about the location of the same structure as the above-mentioned 1st Embodiment of this invention, and the description is abbreviate | omitted.

  FIG. 5 is a cross-sectional view (a cross-sectional view corresponding to FIG. 3 in the first embodiment described above) showing the main part of the translucent display panel 10 according to the second embodiment of the present invention. ing. In the translucent display panel 10 according to the second embodiment, the adhesive 22 is indirectly attached to the acrylic member 12.

  In the translucent display panel 10 according to the present embodiment, the color printing layer 28 having a larger area than the color printing layer 28 of the first embodiment described above is provided on the acrylic member 12 side of the PC sheet 20. Yes. The peripheral part of the color printing layer 28 on the acrylic member 12 side corresponds to the black coating portion 16 around the light transmitting part 18, and the peripheral part of the color printing layer 28 on the acrylic member 12 side has a frame-like adhesive. One side of 22 is bonded. Therefore, the adhesive 22 is indirectly provided on the PC sheet 20 via the color printing layer 28.

  The other surface of the adhesive 22 is bonded to the black painted portion 16 around the light transmitting portion 18, and the adhesive 22 fixes the PC sheet 20 to the painted portion 14 around the light transmitting portion 18 and is flat. In this state, the light transmitting portion 18 is surrounded with the PC sheet 20 fixed. Further, the adhesive 22 is provided with a communication path 24 (not shown in the present embodiment) similar to that of the first embodiment, and the communication path 24 is a region 26 surrounded by the adhesive 22. Is in communication with the outside.

  Here, the adhesive 22 provided between the PC sheet 20 and the coating part 14 is provided in a part not corresponding to the light transmission part 18, and the adhesive 22 protrudes into the light transmission part 18. There is no such thing. For this reason, the adhesive 22 does not appear through the acrylic member 12 from the opposite side (the room P side) of the color printing layer 28.

  Next, a manufacturing procedure of the translucent display panel 10 according to the second embodiment will be described.

  First, the coating portion 14 provided on the back surface of the acrylic member 12 is the same as in the above embodiment.

  On the other hand, the color printing layer 28 is fixed to one side of the PC sheet 20 by performing printing or adhesion treatment. At this time, the color print layer 28 is provided on the PC sheet 20 so that one side periphery of the color print layer 28 corresponds to the black coating portion 16 around the light transmitting portion 18.

  Next, one side of the adhesive 22 is adhered to one side of the color printing layer 28 and indirectly provided on one side of the PC sheet 20. At this time, the adhesive 22 is formed in a frame shape and a part 24 thereof is cut out (the communication path 24 is formed).

  Next, the PC sheet 20 provided with the adhesive 22 is attached to the back surface side of the acrylic member 12. At this time, the PC sheet 20 is positioned so that the color printing layer 28 faces the light transmitting portion 18, and the other surface of the adhesive 22 is bonded to the periphery of the light transmitting portion 18. In this way, the PC sheet 20 is fixed to the black painted portion 16 of the acrylic member 12.

  The translucent display panel 10 according to the second embodiment can be manufactured by the manufacturing procedure as described above. Here, in the translucent display panel 10, the color printing layer 28 is fixed to the coating portion 14 side of the PC sheet 20, and the PC sheet 20 is attached to the coating portion 14 side of the acrylic member 12 by the adhesive 22. Since the configuration, in other words, the color printing layer 28 is attached to the coating portion 14 side of the acrylic member 12 via the PC sheet 20 and the adhesive 22, when the translucent display panel 10 is manufactured, the light transmission portion It is not necessary to apply clear coating to 18 and the productivity of the translucent display panel 10 can be improved as in the above embodiment. Further, the use of the PC sheet 20 as a separate body facilitates color tone adjustment and light control of the color printing layer 28, and is similar to the above embodiment in that productivity is improved.

  About the effect | action of 2nd Embodiment, since it is the same as that of the said embodiment, description is abbreviate | omitted.

  The translucent display panel 10 according to the second embodiment of the present invention is configured such that the PC sheet 20 is applied as a transparent sheet, but instead, a sheet-like member made of a resin other than polycarbonate is used. It is good also as a structure applied as a transparent sheet.

  As described above, the example in which the present invention is applied to the upper cover that covers the shift lever device of the vehicle has been described, but the present invention is not limited thereto. INDUSTRIAL APPLICABILITY The present invention is used in various product fields such as mobile instruments, home appliances, office automation related equipment, inspection equipment in the industrial field and medical field, and sports equipment such as mobile phones and fishing gears. be able to.

It is a top view which shows the principal part of the translucent display panel which concerns on the 1st Embodiment of this invention. It is the expanded sectional view which looked at the principal part of the translucent display panel from the diagonal direction (sectional drawing along line 2-2 in FIG. 1). FIG. 3 is an enlarged cross-sectional view (a cross-sectional view taken along line 3-3 in FIG. 1) showing a main part of the translucent display panel. FIG. 2 is a perspective view of a translucent display panel corresponding to FIG. 1. It is sectional drawing corresponding to FIG. 3 which shows the principal part of the translucent display panel which concerns on the 2nd Embodiment of this invention.

Explanation of symbols

10 Translucent display panel 12 Acrylic member (base material)
14 Coating part 18 Light transmission part 20 PC sheet (transparent sheet)
22 Adhesive 24 Communication path 26 Area (area surrounded by adhesive)
28 Color printing layer (color display layer)

Claims (3)

A substrate having translucency,
A coating part having a light-shielding property, a light-transmitting part having a display shape formed in part on one side of the base material and a coating treatment;
A transparent sheet formed in a sheet shape and disposed on the coating portion side of the substrate;
An adhesive that is provided directly or indirectly on the substrate side of the transparent sheet, and fixes the transparent sheet to the coating portion around the light transmission portion;
A color display layer having a color different from that of the coating portion, provided on one side or the other side of the transparent sheet, and facing the light transmission portion in the fixed state of the transparent sheet by the adhesive;
Translucent display panel with   The translucent display panel according to claim 1, wherein the adhesive provided between the transparent sheet and the coating portion is provided in a portion not corresponding to the light transmission portion.   3. The translucent display panel according to claim 1, wherein the adhesive surrounds the light transmitting portion, and the adhesive is provided with a communication path that communicates the surrounded area with the outside. .

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