JP2013221985A - Display cover member and manufacturing method of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a display cover member capable of thinning a display device.SOLUTION: A display cover member 1A used for a display device 200 comprises: a decorative layer 20; and a cover body 10A including a recessed portion 14 having a shape corresponding to the decorative layer 20 on a surface thereof, and provided with the decorative layer 20 in the recessed portion 14.

Description

  The present invention relates to a display cover member used in a display device and a method for manufacturing the same.

  As disclosed in JP 2011-007830 A (Patent Document 1) and JP 2001-125495 A (Patent Document 2), a display cover member is known. The display cover member is used in various display devices such as a mobile phone or a tablet PC (Personal computer).

  The display cover member has transparency. The display cover member is used so as to cover an image display area such as a liquid crystal panel or a touch panel member built in the display device. The light containing the image information is emitted from the image display area, passes through the display cover member, and is observed by the user.

  As disclosed in Japanese Patent Application Laid-Open No. 2006-290960 (Patent Document 3), generally, an adhesive sheet having light transmittance is provided between a display cover member and an image display region such as a liquid crystal panel. Is provided. This pressure-sensitive adhesive sheet has a function of absorbing an impact, and a display cover member is attached to an image display area such as a liquid crystal panel. In a touch panel electronic device such as a so-called smartphone, a display cover member is attached to the surface of the touch panel member using such an adhesive sheet.

  As disclosed in Japanese Patent Application Laid-Open No. 2011-007830 (Patent Document 1), a light-transmitting scattering prevention film may be provided on the surface of the cover member for display that covers the image display region. . This scattering prevention film prevents the fragments of the display cover member from scattering when the display cover member is damaged. One adhesive sheet may have a function of an anti-scattering film.

  Various electronic devices such as a printed circuit board or a wiring pattern exist around the image display area of the liquid crystal panel or around the touch panel member. Generally, from the viewpoint of design and the like, a decorative layer that covers a printed board or the like is provided on the surface of the display cover member on the image display region side. A decoration layer is comprised from a film-like member, or is directly formed in a display cover member by a printing process or a coating process. When film-like members such as a decorative layer and an adhesive sheet are used, generally, a decorative layer is provided on the cover member for display, and the film-like member such as an adhesive sheet covers the decorative layer. Then, it is affixed to the display cover member.

JP 2011-007830 A JP 2001-125495 A JP 2006-290960 A

  When a decorative layer is provided on the display cover glass, the thickness of the display device as a whole is increased by the thickness of the decorative layer, and there is room for improvement in terms of reducing the thickness of the display device.

  An object of the present invention is to provide a display cover member having a decorative layer, which can reduce the thickness of a display device, and a method for manufacturing the same.

  The display cover member based on this invention is a display cover member used for a display apparatus, Comprising: The concave part which has a shape corresponding to a decoration layer and the said decoration layer is included in the surface, The said decoration in the said recessed part A cover body provided with a layer.

  Preferably, the bottom of the recess is subjected to a roughening process. Preferably, the cover body is made of glass. Preferably, the peripheral area of the concave portion of the cover body and the surface of the decorative layer provided in the concave portion are substantially flush with each other.

  The manufacturing method of the display cover member based on this invention is a manufacturing method of the display cover member used for a display apparatus, Comprising: The process which prepares a cover main body raw material and a decoration layer, The shape corresponding to the said decoration layer A step of forming a recess having a surface on the surface of the cover body material, and a step of providing the decorative layer in the recess.

  Preferably, the concave portion is formed by a molding process. Preferably, the recess is formed by blasting or etching. Preferably, the method further includes a step of roughening the bottom of the recess. Preferably, the cover body material is manufactured using glass.

  ADVANTAGE OF THE INVENTION According to this invention, it is a cover member for displays provided with the decorating layer, Comprising: The cover member for displays which can make a display apparatus thin, and its manufacturing method can be obtained.

It is a perspective view which shows the state which decomposed | disassembled the display apparatus provided with the cover member for displays in a comparative example. It is arrow sectional drawing along the II-II line | wire in FIG. It is a perspective view which shows the assembled state of the display apparatus provided with the cover member for displays in a comparative example. It is arrow sectional drawing along the IV-IV line in FIG. It is sectional drawing which shows the state which the display apparatus provided with the display cover member in Embodiment 1 decomposed | disassembled. It is sectional drawing which shows the assembled state of the display apparatus provided with the display cover member in Embodiment 1. FIG. FIG. 6 is a cross-sectional view showing a disassembled state of a display cover member in a second embodiment. FIG. 5 is a cross-sectional view showing a display cover member in a second embodiment. FIG. 10 is a cross-sectional view showing a disassembled state of a display cover member in a third embodiment. FIG. 6 is a cross-sectional view showing a display cover member in a third embodiment. It is a top view which shows the decorating layer used for the manufacturing method of the cover member for displays in Embodiment 4. FIG. 11 is a cross-sectional view showing a first step of a method for manufacturing a display cover member in the fourth embodiment. It is sectional drawing which shows the 2nd process of the manufacturing method of the cover member for displays in Embodiment 4. FIG. 10 is a cross-sectional view showing a display cover member manufactured by using the display cover member manufacturing method according to Embodiment 4. FIG. 10 is a cross-sectional view showing a method for manufacturing a display cover member in a modification of the fourth embodiment.

[Comparative example]
Before describing each embodiment based on this invention, the comparative example regarding this invention is demonstrated referring FIGS. 1-4 below. In the description of the comparative example, the same parts and corresponding parts are denoted by the same reference numerals, and redundant description may not be repeated.

  FIG. 1 is a perspective view showing a disassembled state of a display device 100 including a display cover member 1 in a comparative example. FIG. 2 is a cross-sectional view taken along line II-II in FIG. FIG. 3 is a perspective view showing an assembled state of the display device 100 including the display cover member 1 in the comparative example. 4 is a cross-sectional view taken along line IV-IV in FIG.

  With reference to FIGS. 1 and 2, the display device 100 includes a display cover member 1, a film member 25, an internal unit 30, and an exterior case 40. The display cover member 1 includes a cover body 10 and a decoration layer 20.

  The cover body 10 has a thin flat plate shape. The cover body 10 is made of glass, for example. The cover body 10 has a plurality of openings 12. The shape of the opening 12 corresponds to the shape of the push button 32 provided in the internal unit 30. When a speaker (not shown) is provided in the internal unit 30, the cover body 10 may have another opening (not shown) corresponding to the shape of the speaker.

  The decorative layer 20 has a thin film shape. The decorative layer 20 is made of, for example, PET (Polyethylene Terephthalate). The color of the decoration layer 20 is, for example, black. The decorative layer 20 has a plurality of openings 22 and window portions 24. The shape of the opening 22 corresponds to the shape of the push button 32 provided in the internal unit 30.

  The shape of the window portion 24 corresponds to the shape of the image display area 34 provided in the internal unit 30. When a speaker (not shown) is provided in the internal unit 30, the decorative layer 20 may have another opening (not shown) corresponding to the shape of the speaker.

  The film member 25 is composed of an adhesive sheet or a scattering prevention film. The film member 25 has a plurality of openings 26. The shape of the opening 26 corresponds to the shape of the push button 32 provided in the internal unit 30. When the internal unit 30 is provided with a speaker (not shown), the film member 25 may have another opening (not shown) corresponding to the shape of the speaker.

  The internal unit 30 includes a plurality of push buttons 32, an image display area 34 including a liquid crystal panel, a recording device (not shown), a rechargeable battery (not shown), and the like. The push button 32 and the image display area 34 are mounted on a printed circuit board (not shown). Various electronic devices (not shown) such as a printed circuit board or a wiring pattern exist in the outer peripheral area 36 of the push button 32 and the image display area 34.

  The outer case 40 has a container shape. The outer case 40 is made of, for example, a metal member. As shown by the arrow AR1, when the display cover member 1, the film member 25, the internal unit 30, and the exterior case 40 are assembled as the display device 100, the internal unit 30 is fitted into the accommodating portion 42 of the exterior case 40. .

  The decorative layer 20 is affixed to the cover body 10. The decorative layer 20 may be previously formed on the cover body 10 by various printing processes such as a mask printing process, a screen printing process, or a pad printing process, or may be previously formed on the cover body 10 by a painting process. It may be. When the display cover member 1 is attached to the outer case 40 using the film member 25 or the like, the display cover member 1 seals the internal unit 30 in the outer case 40.

  When the display cover member 1 constitutes a touch panel type display surface, a transparent conductive film constituting a resistive film type or capacitive type touch panel (see FIG. 5) is formed between the cover body 10 and the decorative layer 20. (Not shown) may be provided. Such a transparent conductive film may be provided between the decorative layer 20 and the image display region 34.

  With reference to FIG. 3 and FIG. 4, in the state in which display device 100 is assembled, push button 32 of internal unit 30 has openings 26 of film member 25, openings 22 of decorative layer 20, and cover body 10. It penetrates the opening 12 and is exposed to the outside. The decorative layer 20 is sandwiched between the internal unit 30 and the cover body 10 via the film member 25.

  The decorative layer 20 surrounds each of the push button 32 and the image display area 34 provided in the internal unit 30 from the outer periphery thereof. The decorative layer 20 covers and hides various electronic devices (not shown) existing in the outer peripheral region 36 of the internal unit 30. In the region R20 corresponding to the region where the decorative layer 20 is provided in the display cover member 1, the decorative layer 20 is seen through. Since various electronic devices existing in the outer peripheral region 36 of the internal unit 30 are covered with the decorative layer 20, they are not observed by the user.

  On the other hand, in the region R34 corresponding to the region where the decorative layer 20 is not provided in the display cover member 1, the image display region 34 is seen through. The light including the image information is emitted from the image display region 34, passes through the film member 25 and the window portion 24 (see FIGS. 1 and 2) of the decorative layer 20, passes through the display cover member 1, and is used by the user. Can be observed.

  Here, the film member 25 provided so as to sandwich the decorative layer 20 and the cover body 10 are separated by the thickness of the decorative layer 20. In the display device 100, the overall thickness is increased by the amount of the decorative layer 20. Further, a gap 50 exists between the film member 25 and the cover main body 10 due to a step formed by the window portion 24 (see FIGS. 1 and 2) of the decorative layer 20. The gap 50 corresponds to the shape of the window portion 24 (see FIGS. 1 and 2).

  When the cover body 10 is attached to the image display area 34 using the film member 25, the display apparatus 100 is assembled so that the cover body 10 is in close contact with the film member 25 (in other words, the gap 50 is eliminated). Even in such a case, the display device 100 is thicker by the amount of the decorative layer 20, and air bubbles are easily generated between the cover body 10 and the film member 25. Further, in order to reduce (absorb) the gap 50, it is necessary to increase the thickness of the adhesive of the film member 25. As a result, the thickness of the display device 100 is increased. This is the same even when a transparent conductive film (not shown) constituting a resistive film type or capacitive type touch panel is provided between the cover body 10 and the image display region 34.

  Therefore, the display device 100 of the comparative example is thick as a whole by the amount of the decorative layer 20 provided between the film member 25 and the cover body 10, and further, the film member 25 and the cover body 10 is easily generated. In the display device 100 of the comparative example, even when the film member 25 is not used, the overall thickness is increased by the amount of the decorative layer 20. That is, the display device 100 has room for improvement from the viewpoint of reducing the thickness of the entire device by the thickness of the decorative layer 20.

[Embodiment]
Embodiments based on the present invention will be described below with reference to the drawings. In the description of each embodiment, when referring to the number, amount, or the like, the scope of the present invention is not necessarily limited to the number, amount, or the like unless otherwise specified. In the description of each embodiment, parts that are the same as or equivalent to those in the comparative example are given the same reference numerals, and redundant description may not be repeated.

[Embodiment 1]
FIG. 5 is a cross-sectional view showing a disassembled state of the display device 200 including the display cover member 1A in the present embodiment. FIG. 6 is a cross-sectional view showing an assembled state of display device 200 including display cover member 1A in the present embodiment.

  Referring to FIGS. 5 and 6, display device 200 includes display cover member 1 </ b> A, film member 25, internal unit 30, and exterior case 40. The display cover member 1 </ b> A includes a cover body 10 </ b> A and a decoration layer 20.

  The cover main body 10A has a thin flat plate shape as a whole. The cover main body 10A is made of, for example, glass, has a high surface strength, and recalls an excellent aesthetic appearance. The cover body 10A may be made of a resin such as acrylic.

  A concave portion 14 having a shape corresponding to the decorative layer 20 is provided on the surface of the cover main body 10A. By providing the concave portion 14, a convex portion 16 is formed on the surface of the cover body 10 </ b> A. The formation depth of the concave portion 14 from the convex portion 16 is, for example, 50 μm. A roughening process may be performed on the bottom of the recess 14. The decorative layer 20 has a window portion 24. The thickness of the decorative layer 20 is, for example, 50 μm.

  As shown by the arrow AR2, when the display cover member 1A, the film member 25, the internal unit 30, and the exterior case 40 are assembled as the display device 200, the internal unit 30 is fitted into the accommodating portion 42 of the exterior case 40. . The decorative layer 20 is affixed to the recess 14 of the cover body 10A. The decorative layer 20 may be formed in advance in the concave portion 14 of the cover main body 10A by various printing processes such as a mask printing process, a screen printing process, or a pad printing process, or by a coating process. It may be formed in advance.

  As shown in FIG. 6, the convex portion 16 of the cover main body 10 </ b> A is disposed in the window portion 24 of the decorative layer 20. In the state in which the decorative layer 20 is provided in the concave portion 14, the peripheral region (the convex portion 16) of the concave portion 14 in the cover body 10 </ b> A and the surface of the decorative layer 20 provided in the concave portion 14 are substantially the same. It is good that the relationship is in the same level.

  When the thickness of the decoration layer 20 is t, the formation depth of the recess 14 from the protrusion 16 is formed by the decoration layer 20 by forming the recess 14 with a value greater than 0 and less than 2 × t. It is possible to make the difference in level as compared with the case where the recess 14 is not provided. Although the bottom of the recess 14 in the present embodiment has a flat shape, it may be formed in a staircase shape or a tapered shape.

  In the case where the display cover member 1A constitutes a touch panel display surface, a resistive film type or electrostatic capacity type is provided between the convex portion 16 of the cover main body 10A and the image display region 34 (film member 25). A transparent conductive film (not shown) constituting the touch panel is provided. When the display cover member 1A is attached to the outer case 40 using the film member 25 or the like, the display cover member 1A seals the internal unit 30 in the outer case 40.

  The decorative layer 20 covers and hides various electronic devices (not shown) existing in the outer peripheral area of the image display area 34 of the internal unit 30. When the bottom surface of the recess 14 is roughened, the light shielding property in the recess 14 is improved, and various electronic devices are more difficult for the user to see. On the other hand, the image display area 34 is seen through the display cover member 1A. The light including the image information is emitted from the image display region 34 and can be observed by the user through the display cover member 1A.

  In the display device 200, unlike the display device 100 in the comparative example described above, the film member 25 and the cover body 10 are not separated by the amount of the decorative layer 20. The film member 25 and the cover main body 10A are close to each other, the decorative layer 20 is disposed or formed in the concave portion 14, and the convex portion 16 of the cover main body 10A is in close contact with the film member 25. Therefore, in the display device 200, the overall thickness is not increased by the amount of the decorative layer 20, and the thickness can be reduced as compared with the display device 100.

  That is, in recent years, electronic devices such as smartphones and mobile phones are increasingly required to be thin. For example, the thickness of each member is required to be as thin as possible on the order of 0.1 mm or less. The display device 200 can sufficiently satisfy such a request, and by disposing the decorative layer 20 in the recess 14, the gap between the decorative layer 20 and the cover body 10 is reduced. Therefore, it is possible to contribute to thinning of electronic devices.

  Further, in the display device 200, the convex portion 16 of the cover main body 10 </ b> A is in close contact with the film member 25. There is little or no gap between the film member 25 and the cover body 10A. In the display device 200, bubbles are hardly generated between the cover main body 10A and the film member 25. This is the same even when a transparent conductive film (not shown) constituting a resistive film type or capacitive type touch panel is provided between the cover body 10A and the image display region 34.

  Therefore, when the film member 25 is used, the display device 200 of the present embodiment can also suppress the generation of bubbles between the film member 25 and the display cover member 1A.

  When the concave portion 14 is roughened, it is preferable that the average roughness is about 10 nm to 1000 nm and the PV value is about 20 nm to 2000 nm. If average roughness and PV value are the range of these values, high light-shielding property can be acquired and an external appearance will not be impaired.

  In addition to the concave portion 14, if the required performance is not a mirror surface, it is preferable to perform a roughening treatment. For example, the side opposite to the display surface of the cover main body 10A may be used without impairing the transmittance even if it is not a mirror surface when a film is pasted. By making the surface rough, it is possible to expect an improvement in the adhesion between the cover main body 10A and the film.

  In addition, although the display apparatus 200 of this Embodiment is provided with the film member 25, even if it is a case where the film member 25 is not used, by arrange | positioning the decoration layer 20 in the recessed part 14, The overall thickness does not increase by the amount of the decorative layer 20, and the thickness can be reduced as compared with the display device 100.

[Embodiment 2]
FIG. 7 is a cross-sectional view showing a disassembled state of the display cover member 1B in the present embodiment. FIG. 8 is a cross-sectional view showing the display cover member 1B in the present embodiment.

  As shown in FIG. 7, the display cover member 1 </ b> B includes a cover body 10 </ b> B and a decoration layer 20. The cover body 10B is made of glass, for example. The cover body 10B is formed in a substantially cap shape as a whole, and is used so as to cover an internal unit (not shown) of the display device. The cover main body 10 </ b> B has a main surface portion 13, a connection portion 15, and a side surface portion 17.

  The main surface portion 13 has a substantially flat plate shape. The connecting portion 15 is connected to the outer edge of the main surface portion 13. The connecting portion 15 curves in a direction away from the main surface portion 13 as it goes outward from the main surface portion 13. The side surface portion 17 is connected to the outer edge of the connection portion 15. The side surface portion 17 is located on the opposite side of the main surface portion 13 with the connection portion 15 interposed therebetween. The cover body 10 </ b> B is formed to be curved with a 3D (three dimension) shape at the connection portion 15 as it goes from the main surface portion 13 side to the side surface portion 17 side.

  Here, a concave portion 14 having a shape corresponding to the decorative layer 20 is provided on the surface of the main surface portion 13. By providing the concave portion 14, a convex portion 16 is formed on the surface of the cover main body 10 </ b> B. The formation depth of the concave portion 14 from the convex portion 16 is, for example, 50 μm. A roughening process may be performed on the bottom of the recess 14. The decorative layer 20 has a window portion 24. The thickness of the decorative layer 20 is, for example, 50 μm. As shown by the arrow AR3, the decorative layer 20 is attached to the recess 14 of the cover body 10B. The decorative layer 20 may be previously formed in the concave portion 14 of the cover body 10B by various printing processes such as a mask printing process, a screen printing process, or a pad printing process, or may be formed by a coating process. It may be formed in advance.

  As shown in FIG. 8, the convex portion 16 of the cover body 10 </ b> B is disposed in the window portion 24 of the decorative layer 20. In the state in which the decorative layer 20 is provided in the concave portion 14, the peripheral region (the convex portion 16) of the concave portion 14 in the cover body 10 </ b> B and the surface of the decorative layer 20 provided in the concave portion 14 are substantially the same. It is good that the relationship is in the same level.

  Also with the display cover member 1B configured as described above, the same operations and effects as those of the display cover member 1A in the first embodiment described above can be obtained. That is, even when the display cover member 1B is assembled as a display device (not shown), the overall thickness does not increase by the amount of the decorative layer 20, and the display device 100 Compared to this, it is possible to reduce the thickness. Further, when a film-like member such as an adhesive sheet is provided in the display device, bubbles may be generated between the film-like member and the display cover member 1B. It can be suppressed.

[Embodiment 3]
FIG. 9 is a cross-sectional view showing a disassembled state of the display cover member 1C in the present embodiment. FIG. 10 is a cross-sectional view showing the display cover member 1C in the present embodiment.

  As shown in FIG. 9, the display cover member 1C includes a cover main body 10C and a decorative layer 20A. The cover body 10C is made of glass, for example. A concave portion 14 having a shape corresponding to the decorative layer 20A is provided on the surface of the cover body 10C. A roughening process may be performed on the bottom of the recess 14. By providing the concave portion 14, a convex portion 16 is formed on the surface of the cover main body 10 </ b> C. The surface of the convex portion 16 in the present embodiment is curved so as to bulge outward.

  The decorative layer 20 </ b> A has a window portion 24. As shown by the arrow AR4, the decorative layer 20 is attached to the concave portion 14 of the cover main body 10C. The decorative layer 20A may be formed in advance in the concave portion 14 of the cover main body 10C by various printing processes such as a mask printing process, a screen printing process, or a pad printing process, or may be formed by a coating process. It may be formed in advance.

  As shown in FIG. 10, the convex portion 16 of the cover body 10C is disposed in the window portion 24 of the decorative layer 20A. In the state in which the decorative layer 20A is provided in the concave portion 14, the peripheral area (convex portion 16) of the concave portion 14 in the cover body 10C and the surface of the decorative layer 20A provided in the concave portion 14 are substantially the same. It is good that the relationship is in the same level.

  Also with the display cover member 1C configured as described above, the same operations and effects as those of the display cover members 1A and 1B in the first and second embodiments can be obtained. That is, even when the display cover member 1 </ b> C is assembled as a display device (not shown), the overall thickness is not increased by the amount of the decorative layer 20. Compared to this, it is possible to reduce the thickness. Further, in the case where the display cover member 1C is provided with a film-like member such as an adhesive sheet inside the display device, bubbles may be generated between the film-like member and the display cover member 1C. It can be suppressed.

[Embodiment 4]
FIG. 11 is a plan view showing a decorative layer 20B used in the method for manufacturing a display cover member in the present embodiment. The decorative layer 20B as a whole has a rectangular shape in which four corners are rounded. The width W1 in the short side direction of the decorative layer 20B is 50 mm to 60 mm. The width W2 outside the window 24 is 3 mm. The width W3 of the window part 24 is 44 mm to 54 mm. The width H1 in the longitudinal direction of the decorative layer 20B is 100 mm to 120 mm. The width H2 outside the window 24 is 10 mm. The thickness of the decorative layer 20B is 50 μm.

  With reference to FIG. 12, in order to manufacture the display cover member having a shape corresponding to the decorative layer 20B, a molding die 60 is used. The molding die 60 includes a lower die 61 and an upper die 62. The molding surface 63 of the lower mold 61 has a flat shape. The molding surface of the upper mold 62 has a molding surface 64 for forming the concave portion 14 and a molding surface 66 for forming the convex portion 16.

  The width W2 of the molding surface 64 corresponds to the width W2 of the decorative layer 20B. The width W3 of the molding surface 66 corresponds to the width W3 of the decorative layer 20B. After the molding die 60 is prepared, molten glass 70 (cover body material) for manufacturing the cover body is supplied onto the molding surface 63 of the lower mold 61.

  Referring to FIG. 13, molten glass 70 is press-molded as upper mold 62 moves downward as indicated by arrow DR. In the present embodiment, since the recess 14 is formed in the molten glass 70 (cover body material) by molding, the process is not complicated, and the manufacturing cost can be reduced.

  Referring to FIG. 14, when molten glass 70 is cured, cover body 10 </ b> A having recess 14 is obtained. A roughening process may be performed on the bottom of the recess 14. By providing the decoration layer 20 on the cover main body 10A, a display cover member is obtained. According to the method for manufacturing a display cover member in the present embodiment, a display cover member capable of realizing a thin display device as a whole can be obtained by a decorative layer forming process similar to the conventional one. Furthermore, according to the manufacturing method of the display cover member in the present embodiment, when a film-like member such as an adhesive sheet is provided inside the display device by the same decorative layer forming process as the conventional case, It is possible to obtain a display cover member capable of suppressing the generation of bubbles between the film-like member and the display cover member.

  In the case where the bottom surface of the recess 14 is roughened, the decorative layer 20 can be firmly adhered to the recess 14. Further, when forming the recess 14, the molding surface 64 of the upper mold 62 may be roughened in advance. The releasability of the upper mold 62 can be improved, and the production efficiency is increased.

  Referring to FIG. 15, the recess 14 may be formed by blasting or etching. In this case, after the cover main body material 10 </ b> R is prepared, the mask member 80 is placed on a portion corresponding to the convex portion 16. By performing an etching process using a predetermined solution, the recess 14 can be easily formed in the cover main body material 10R.

[Example]
An example performed to confirm the effect of the recess 14 will be described.

Example 1
This example is based on the above-described fourth embodiment. In the present embodiment, a molten glass 70 having a high strength and whose composition was developed for molding was used as the material of the cover main body 10A. The molding die 60 was machined to form a molding surface. The molding surface 64 corresponding to the recess 14 had a depth of about 50 μm in advance, and the surface was roughened by microblasting.

  The molten glass 70 was pressed using the produced molding die 60 to obtain a cover main body 10A. The formation depth of the recess 14 is about 50 μm. When a film is pasted to provide the decorative layer 20 on the cover body 10A, and then the display cover member is pasted to the liquid crystal panel using a transparent double-sided adhesive sheet, the thickness can be reduced and bubbles are not generated. The appearance was good.

(Example 2)
In this embodiment, a plate glass having a high strength and whose composition was developed for molding was used as the material of the cover main body 10A. The molding die 60 was machined to form a molding surface. The molding surface 64 corresponding to the recess 14 had a depth of about 50 μm in advance, and the surface was roughened by microblasting.

  The plate glass was heated using the produced molding die 60, and the plate glass was pressed when the temperature of the plate glass reached the vicinity of the softening point, thereby obtaining a cover body 10A. The formation depth of the recess 14 is about 50 μm. When a film is pasted to provide the decorative layer 20 on the cover body 10A, and then the display cover member is pasted to the liquid crystal panel using a transparent double-sided adhesive sheet, the thickness can be reduced and bubbles are not generated. The appearance was good.

(Example 3)
In the present embodiment, commercially available glass was used as the material of the cover main body 10A. A concave portion 14 having a formation depth of about 50 μm was formed on the glass by microblasting. The bottom of the recess 14 is roughened. When a film is pasted to provide the decorative layer 20 on the cover body 10A, and then the display cover member is pasted to the liquid crystal panel using a transparent double-sided adhesive sheet, the thickness can be reduced and bubbles are not generated. The appearance was good.

Example 4
In the present embodiment, commercially available glass was used as the material of the cover main body 10A. A mask having a predetermined pattern was applied to the glass, and a recess 14 having a formation depth of about 50 μm was formed by wet etching. When a film is pasted to provide the decorative layer 20 on the cover body 10A, and then the display cover member is pasted to the liquid crystal panel using a transparent double-sided adhesive sheet, the thickness can be reduced and bubbles are not generated. The appearance was good.

(Example 5)
Forming the decorative layer 20 using the screen printing process on the cover body 10 of Example 1 described above, and applying the anti-scattering film thereon, thinning can be realized, no bubbles are generated, Appearance was good.

  As mentioned above, although each embodiment and each Example based on this invention were described, each embodiment and each Example disclosed this time are illustrations in all points, and are not restrictive. The technical scope of the present invention is defined by the terms of the claims, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  1, 1A, 1B, 1C Display cover member, 10, 10A, 10B, 10C Cover body, 10R Cover body material, 12, 22, 26 Opening part, 13 Main surface part, 14 Recessed part, 15 Connection part, 16 Convex part, 17 Side part, 20, 20A, 20B Decoration layer, 24 Window part, 25 Film member, 30 Internal unit, 32 Push button, 34 Image display area, 36 Outer peripheral area, 40 Exterior case, 42 Housing part, 50 Gap, 60 Mold for molding, 61 Lower mold, 62 Upper mold, 63, 64, 66 Molding surface, 70 Molten glass, 80 Mask member, 100, 200 Display device, AR1, AR2, AR3, AR4, DR arrow, H1, H2, W1, W2, W3 width, R20, R34 region.

Claims (9)

A display cover member used in a display device,
A decorative layer,
Including a concave portion having a shape corresponding to the decorative layer on the surface, and a cover body provided with the decorative layer in the concave portion,
Cover member for display. The bottom of the recess is subjected to a roughening treatment,
The display cover member according to claim 1. The cover body is made of glass.
The display cover member according to claim 1 or 2. The peripheral area of the concave portion of the cover body and the surface of the decorative layer provided in the concave portion are substantially flush with each other.
The display cover member according to claim 1. A method for manufacturing a display cover member used in a display device,
Preparing a cover body material and a decorative layer;
Forming a recess having a shape corresponding to the decorative layer on the surface of the cover body material;
Providing the decorative layer in the recess, and
A method for manufacturing a display cover member. The recess is formed by a molding process.
The manufacturing method of the cover member for displays of Claim 5. The recess is formed by blasting or etching.
The manufacturing method of the cover member for displays of Claim 5. Further comprising a step of roughening the bottom of the recess.
The manufacturing method of the cover member for displays in any one of Claim 5 to 7. Manufacturing the cover body material using glass,
The manufacturing method of the cover member for displays in any one of Claim 5 to 8.

Images