Toppan Printing Co., Ltd.

Toppan Inc.

Kiyoaki Nishitsuji

Takehiro Nishi

Naoko Mikami

Daisei Fujito

Reiji Terada

Mikio Shinno

Sumika Tamura

Shinichi Shimamura

Masashi Kurata

Kenta Takeda

Hiroyasu Aizawa

Sumika Akiyama

A light shielding plate includes a front surface that is located on a light incident side, a rear surface that is a surface facing away from the front surface, and an aperture that penetrates through the front surface and the rear surface. The aperture has a first aperture portion and a second aperture portion that is connected to the first aperture portion via a central opening, and the first aperture portion extends from a rear opening in the rear surface toward the central opening and has a shape tapered from the rear surface toward the front surface. The second aperture portion extends from a rear opening in the front surface to the central opening and has a shape tapered from the front surface toward the rear surface. The front opening is larger than the rear opening.

Light shielding plate, camera unit, electronic device, and method of producing the light shielding plate

A light shielding plate includes a front surface located on a light incident side, a rear surface opposite to the front surface, and a hole passing through the light shielding plate between the front surface and the rear surface. The hole has a first hole portion and a second hole portion connected to the first hole portion at an intermediate opening thereof. The first hole portion extends from a rear surface opening on the rear surface to the intermediate opening and is shaped so as to taper from the rear surface toward the front surface. The second hole portion extends from a front surface opening on the front surface to the intermediate opening and is shaped so as to taper from the front surface toward the rear surface. The front surface opening is larger than the rear surface opening. The intermediate opening has a circularity of 3 μm or less.

Light shielding plate, camera unit, electronic device, and method of manufacturing light shielding plate

A light shielding plate including a front surface located on a light incident side, a rear surface facing away from the front surface, and an aperture penetrating through the front and rear surfaces. The aperture includes a first aperture portion and a second aperture portion connected to the first aperture portion via a central opening. The first aperture portion extends from a rear opening in the rear surface toward the central opening and has a shape tapered from the rear surface toward the front surface. The second aperture portion extends from a front opening in the front surface toward the central opening and has a shape tapered from the front surface toward the rear surface. The front opening is larger than the rear opening.

Light shielding plate, camera unit, and electronic device

A light shielding member formed of an annular metal base material includes a front surface, a rear surface facing away from the front surface, and an outer peripheral surface connecting the front and rear surfaces in an outer periphery of the light shielding member. The outer peripheral surface includes a ridge that is protruded outward furthest therein in a radial direction of the light shielding member, in a cross section that is parallel to a plane perpendicular to the front surface.

Light shielding member, lens unit, camera module, and electronic device

A light shielding plate includes: a front surface located on a light entry side; a rear surface facing away from the front surface; and a hole extending through between the front surface and the rear surface. The hole includes a first hole portion and a second hole portion connected to the first hole portion at a center opening. The first hole portion extends from a rear surface opening in the rear surface to the center opening and is tapered in shape from the rear surface toward the front surface. The second hole portion extends from a front surface opening in the front surface to the center opening and is tapered in shape from the front surface toward the rear surface. The front surface opening is larger in size than the rear surface opening.

Light shielding plate, camera unit, and electronic apparatus

A rolled metal sheet includes an obverse surface and a reverse surface that is a surface located opposite to the obverse surface. At least either one of the obverse surface and the reverse surface is a processing object. A method for manufacturing a metal mask substrate includes reducing a thickness of the rolled metal sheet to 10 &#x3bc;m or less by etching the processing object by 3 &#x3bc;m or more by use of an acidic etching liquid, and roughening the processing object so that the processing object becomes a resist formation surface that has a surface roughness Rz of 0.2 &#x3bc;m or more, thereby obtaining a metal mask sheet.

Method for producing base for metal masks, method for producing metal mask for vapor deposition, base for metal masks, and metal mask for vapor deposition

A metal mask substrate includes a metal obverse surface configured such that a resist is placed on the obverse surface. The obverse surface has a three-dimensional surface roughness Sa of less than or equal to 0.11 &#x3bc;m. The obverse surface also has a three-dimensional surface roughness Sz of less than or equal to 3.17 &#x3bc;m.

Metal mask base, metal mask and method for producing metal mask

A vapor deposition metal mask substrate includes a nickel-containing metal sheet including a obverse surface and a reverse surface, which is opposite to the obverse surface. At least one of the obverse surface and the reverse surface is a target surface for placing a resist layer. The target surface has a surface roughness Sa of less than or equal to 0.019 &#x3bc;m. The target surface has a surface roughness Sz of less than or equal to 0.308 &#x3bc;m.

Metal mask substrate for vapor deposition, metal mask for vapor deposition, production method for metal mask substrate for vapor deposition, and production method for metal mask for vapor deposition

The ratio of the difference between a surface distance L at each of the different positions in a width direction DW of a metal sheet and a minimum surface distance Lm to the minimum surface distance Lm is an elongation difference ratio. The elongation difference ratio in a center section in the width direction DW of the metal sheet is less than or equal to 3&#xd7;10. The elongation difference ratios in two edge sections in the width direction DW of the metal sheet are less than or equal to 15&#xd7;10. The elongation difference ratio in at least one of the two edge sections in the width direction DW of the metal sheet is less than the elongation difference ratio in the center section in the width direction of the metal sheet.

Vapor deposition mask base material, vapor deposition mask base material manufacturing method, and vapor deposition mask manufacturing method

The percentage of a height of each undulation with respect to a length of the undulation is a unit steepness. A steepness is an average value of unit steepnesses of all undulations in a longitudinal direction at each of different positions in a width direction of a metal sheet. The maximum value of steepnesses in a center section in the width direction is less than or equal to 0.3%. The maximum value of steepnesses in a first edge in the width direction and a maximum value of steepnesses in a second edge section in the width direction are less than or equal to 0.6%. The maximum value of steepnesses in at least one of the first edge section and the second edge section in the width direction is less than the maximum value of steepnesses in the center section in the width direction.

Vapor deposition mask substrate, vapor deposition mask substrate manufacturing method, vapor deposition mask manufacturing method, and display device manufacturing method

A metal mask substrate includes a metal surface to which a resist is to be disposed. A specular reflectance of incident light to the surface is 45.2% or more.

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Tokyo, Japan

Kiyoaki Nishitsuji