WO2024219861A1 - Electronic device including housing and method for manufacturing housing - Google Patents

Abstract

According to an embodiment of the present invention, provided is an electronic device comprising a housing that forms the exterior of the electronic device. The housing includes: a base material; a first layer that is disposed on the base material and contains a color paint; and a second layer, disposed on the first layer, for protecting the first layer. The housing includes a logo formed by irradiating the first layer with a laser beam, and the first layer has a light transmittance of 25% to 35%.

Description

Electronic device including housing and method for manufacturing the housing

Various embodiments of the present disclosure relate to an electronic device including a housing and a method of manufacturing the housing.

An electronic device may refer to a device that performs a specific function according to a loaded program, such as home appliances, electronic notebooks, portable multimedia players, mobile communication terminals, tablet PCs, audio/video devices, desktop/laptop computers, and car navigation systems. For example, these electronic devices can output stored information as audio or video. As the integration of electronic devices increases and ultra-high-speed, large-capacity wireless communications become widespread, recently, a single electronic device such as a mobile communication terminal can be loaded with various functions. For example, in addition to communication functions, entertainment functions such as games, multimedia functions such as music/video playback, communication and security functions for mobile banking, and functions such as schedule management and electronic wallets are being integrated into a single electronic device.

Recently, as the miniaturization, thinning, and portability of electronic devices such as smart phones and/or laptops are emphasized, attempts are being made to adopt glass material parts with aesthetic appeal and apply them to the exterior of electronic devices. In addition, various surface treatment technologies are being developed to impart functional effects in addition to the design effects to the exterior of the glass material parts.

The above information may be provided as related art for the purpose of assisting in understanding the disclosure of the present disclosure. No claim or determination is made as to whether any of the above is applicable as prior art in connection with the disclosure of the present disclosure.

An electronic device according to one embodiment of the present disclosure includes a housing forming an exterior of the electronic device, wherein the housing may include: a base material; a first layer disposed on the base material and containing a color paint; and a second layer disposed on the first layer and protecting the first layer. The housing may include a logo formed by a laser irradiated on the first layer. The first layer may be formed to have a light transmittance of 25% to 35%.

According to one embodiment of the present disclosure, a method for manufacturing an electronic device housing can be provided, including: a process for preparing a base material; a process for forming a first layer containing a color paint on one surface of the base material; a process for forming a second layer on one surface of the first layer for protecting the first layer; and a process for forming a logo by discoloring or etching the first layer using a laser.

According to one embodiment of the present disclosure, a housing can be provided, including: a base material including a synthetic resin material; a first layer disposed on the base material, the first layer containing a color paint and a primer, and having a light transmittance of 25% to 35%; and a second layer disposed on the first layer and coated to protect the first layer. The housing can include a logo formed by a laser irradiated on the first layer.

The above-described aspects or other aspects, configurations and/or advantages of one embodiment disclosed in the present disclosure may be further clarified by the following detailed description taken in conjunction with the accompanying drawings.

FIG. 1 is a front perspective view of an electronic device according to one embodiment of the present disclosure.

FIG. 2 is a rear perspective view of an electronic device according to one embodiment of the present disclosure.

FIG. 3 is a perspective view showing an electronic device according to one embodiment and a portion of a pen input device inserted into the electronic device.

FIG. 4 is a perspective view of a pen input device according to one embodiment.

FIG. 5 is a cross-sectional view of a pen input device according to one embodiment.

Fig. 6 is a cross-sectional view of a housing according to one embodiment (first comparative example).

FIG. 7 is a block diagram of a method for manufacturing a housing according to one embodiment (first comparative example).

Fig. 8 is a cross-sectional view of a housing according to one embodiment (second comparative embodiment).

FIG. 9 is a block diagram of a method for manufacturing a housing according to one embodiment (second comparative embodiment).

Figure 10 is a cross-sectional view of a housing according to one embodiment.

FIG. 11 is a block diagram of a method for manufacturing a housing according to one embodiment.

Throughout the attached drawings, similar reference numbers may be assigned to similar parts, components and/or structures.

As the portability of electronic devices such as smart phones, laptops, or wearable electronic devices is emphasized, high strength is required for the outer material, and design demand for expressing aesthetics through various patterns is increasing. According to one embodiment, the outer material (hereinafter referred to as “housing”) of an electronic device can have a soft texture to enhance design and grip.

In the case where the housing has a soft texture, when forming a logo on the housing for the purpose of indicating the product brand or information such as product specifications, the thickness of the housing may increase due to the inclusion of multiple paint layers in the manufacturing process to ensure the durability of the product. In addition, costs for materials and time due to additional processes are wasted, so efficient productivity cannot be expected.

According to various embodiments of the present disclosure described in detail below, a housing including a smaller number of paint layers than conventional ones and a method for manufacturing the same can be provided, thereby providing a thinner housing. In addition, the mass productivity of the product can be improved through process efficiency, and there is an effect of reducing manufacturing time and costs.

Various embodiments of the present disclosure are described with reference to the accompanying drawings. It should be understood that the embodiments and terms used herein are not intended to limit the technology described in the present disclosure to specific embodiments, but include various modifications, equivalents, and/or substitutes of the embodiments. In connection with the description of the drawings, similar reference numerals may be used for similar components. The singular expression may include the plural expression unless the context clearly indicates otherwise.

In this disclosure, expressions such as "A or B" or "at least one of A and/or B" can include all possible combinations of the listed items. Expressions such as "first", "second", "first", or "second" can describe the components, without regard to order or importance, and are only used to distinguish one component from another component, but do not limit the components. When it is said that a certain (e.g., a first) component is "(functionally or communicatively) connected" or "connected" to another (e.g., a second) component, the certain component can be directly connected to the other component, or can be connected via another component (e.g., a third component).

In this disclosure, the term "configured to" may be used interchangeably with, for example, "suitable for," "capable of," "modified to," "made to," "capable of," or "designed to," in terms of hardware or software. In some contexts, the phrase "a device configured to" may mean that the device is "capable of" doing something together with other devices or components. For example, the phrase "a processor configured to perform A, B, and C" may mean a dedicated processor (e.g., an embedded processor) for performing the operations, or a general-purpose processor (e.g., a CPU or an application processor) that can perform the operations by executing one or more software programs stored in a memory device.

The electronic device of the present disclosure may include, for example, at least one of a smartphone, a tablet PC, a mobile phone, a video phone, an e-book reader, a desktop PC, a laptop PC, a netbook computer, a workstation, a server, a PDA, a portable multimedia player (PMP), an MP3 player, a medical device, a camera, or a wearable device. A wearable device may include at least one of an accessory (e.g., a watch, a ring, a bracelet, an anklet, a necklace, glasses, contact lenses, or a head-mounted device (HMD)), a fabric or clothing-integrated (e.g., an electronic garment), a body-attached (e.g., a skin pad or tattoo), or an implantable circuit. In some embodiments, the electronic device may include at least one of a television, a digital video disk (DVD) player, an audio system, a refrigerator, an air conditioner, a vacuum cleaner, an oven, a microwave oven, a washing machine, an air purifier, a set-top box, a home automation control panel, a security control panel, a media box (e.g., Samsung HomeSync ^™ , AppleTV ^™ , or Google TV ^™ ), a game console (e.g., Xbox ^™ , PlayStation ^™ ), an electronic dictionary, an electronic key, a camcorder, or an electronic picture frame.

In another embodiment, the electronic device may include at least one of various medical devices (e.g., various portable medical measuring devices (such as a blood sugar meter, a heart rate meter, a blood pressure meter, or a body temperature meter), magnetic resonance angiography (MRA), magnetic resonance imaging (MRI), computed tomography (CT), a camera, or an ultrasound machine), a navigation device, a global navigation satellite system (GNSS), an event data recorder (EDR), a flight data recorder (FDR), an automobile infotainment device, electronic equipment for ships (e.g., a marine navigation device, a gyrocompass, etc.), avionics, a security device, a head unit for a vehicle, an industrial or household robot, a drone, an ATM of a financial institution, a point of sales (POS) of a store, or an Internet of Things device (e.g., a light bulb, various sensors, a sprinkler device, a fire alarm, a thermostat, a streetlight, a toaster, exercise equipment, a hot water tank, a heater, a boiler, etc.). According to some embodiments, the electronic device may include at least one of a piece of furniture, a building/structure, or a part of a vehicle, an electronic board, an electronic signature receiving device, a projector, or various measuring devices (e.g., a water, electricity, gas, or radio wave measuring device, etc.). The electronic device of the present disclosure may be flexible, or may be a combination of two or more of the various devices described above. The electronic device according to an embodiment of the present disclosure is not limited to the devices described above. In the present disclosure, the term user may refer to a person using an electronic device or a device (e.g., an artificial intelligence electronic device) using an electronic device.

FIG. 1 is a front perspective view of an electronic device according to one embodiment of the present disclosure. FIG. 2 is a rear perspective view of the electronic device according to one embodiment of the present disclosure.

In the detailed descriptions below with reference to FIGS. 1 and 2, the length direction of the electronic device (100) may be defined as the 'Y-axis direction', the width direction as the 'X-axis direction', and/or the height direction (thickness direction) as the 'Z-axis direction'. In the detailed description below, references to the length direction, the width direction, and/or the height direction (or thickness direction) may indicate the length direction, the width direction, and/or the height direction (or thickness direction) of the electronic device (100). In some embodiments, with respect to the direction in which a component is directed, 'negative/positive (-/+)' may be mentioned together with the rectangular coordinate system illustrated in the drawings. According to one embodiment, the arrangement relationship in the height direction of a certain component or another component, i.e., the reference of up/down, may follow the Z-axis direction. That is, when a component is placed above another component, it can mean that the component is placed in the Z-axis direction with respect to the other component, and when a component is placed below another component, it can mean that the component is placed in the direction opposite to the Z-axis with respect to the other component. On the other hand, it should be noted that even if a component is placed above or below another component, it does not mean that the entire component is located above or below the entire components of the other component. For example, a part of a component may be placed above a part of another component, but another part of a component may be placed below another part of the other component. In the following description, when a component is said to overlap (or stack) another component, it should be noted that the description of the arrangement relationship in the height direction described above can be applied. In the description of the direction, if 'yin/yang (-/+)' is not described, it can be interpreted as facing the + direction unless otherwise defined. For example, 'Z-axis direction' can be interpreted as facing the +Z direction, 'X-axis direction' can be interpreted as facing the +X-axis direction, and 'Y-axis direction' can be interpreted as facing the +Y-axis direction. In describing directions, facing one of the three axes of the orthogonal coordinate system can include facing in a direction parallel to the axis. This is based on the orthogonal coordinate system described in the drawings for the sake of concise description, and it should be noted that the description of such directions or components does not limit the various embodiments of the present disclosure.

Referring to FIGS. 1 and 2, an electronic device (100) according to one embodiment may include a housing (110) including a front surface (101A), a back surface (101B), and a side surface (101C) surrounding a space between the front surface (101A) and the back surface (101B). In another embodiment (not shown), the housing (110) may refer to a structure forming a portion of the front surface (101A) of FIG. 1, the back surface (101B) of FIG. 2, and the side surface (101C). According to one embodiment, at least a portion of the front surface (101A) may be formed by a substantially transparent front plate (102) (e.g., a glass plate including various coating layers, or a polymer plate). The back surface (101B) may be formed by the back surface plate (111). The back plate (111) may be formed of, for example, glass, ceramic, polymer, metal (e.g., aluminum, stainless steel (STS), or magnesium), or a combination of at least two of the above materials. The side surface (101C) may be formed by a side bezel structure (or “side member”) (112) that is coupled with the front plate (102) and the back plate (111) and includes metal and/or polymer. In some embodiments, the back plate (111) and the side bezel structure (112) may be formed integrally and include the same material (e.g., a metal material such as glass, aluminum, or ceramic). In other embodiments, the front surface (101A) and/or the front plate (102) may be interpreted as a part of the display (110). In one embodiment, the housing (110) may include the front plate (102) and the back plate (111).

According to one embodiment, the electronic device (100) may include at least one of a display (110), an audio module (103, 104, 105), a sensor module, a camera module (106, 207), a key input device (116, 117), and a connector hole (113, 114). In some embodiments, the electronic device (100) may omit at least one of the components (e.g., the connector hole (114)) or may additionally include other components.

In one embodiment, the display (110) may be visually exposed through, for example, a significant portion of the front plate (102). In some embodiments, at least a portion of the display (110) may be exposed through the front plate (102) forming the front surface (101A). In one embodiment, the display (110) may be a flexible display or a foldable display.

In one embodiment, the surface (or front plate (102)) of the housing (110) may include a screen display area formed as the display (110) is visually exposed. As an example, the screen display area may include the front surface (101A).

In another embodiment (not shown), the electronic device (100) may include a recess or opening formed in a portion of a screen display area (e.g., a front surface (101A)) of the display (110), and may include at least one of an audio module (105), a sensor module (not shown), a light-emitting element (not shown), and a camera module (106) aligned with the recess or opening. In another embodiment (not shown), the electronic device (100) may include at least one of an audio module (105), a sensor module (not shown), a camera module (106), a fingerprint sensor (not shown), and a light-emitting element (not shown) on a back surface of the screen display area of the display (110).

In other embodiments (not shown), the display (110) may be coupled with or positioned adjacent to a touch sensing circuit, a pressure sensor capable of measuring the intensity (pressure) of a touch, and/or a digitizer that detects a magnetic field-type stylus pen.

In some embodiments, at least a portion of the key input device (116, 117) may be disposed in the side bezel structure (112).

According to one embodiment, the audio module (103, 104, 105) may include, for example, a microphone hole (103) and a speaker hole (104, 105). The microphone hole (103) may have a microphone disposed inside for acquiring external sound, and in some embodiments, multiple microphones may be disposed so as to detect the direction of the sound. The speaker hole (104, 105) may include an external speaker hole (104) and a receiver hole (105) for calls. In some embodiments, the speaker hole (104, 105) and the microphone hole (103) may be implemented as a single hole, or a speaker may be included without the speaker hole (104, 105) (e.g., a piezo speaker).

According to one embodiment, a sensor module (not shown) may generate an electrical signal or a data value corresponding to, for example, an internal operating state of the electronic device (100) or an external environmental state. The sensor module (not shown) may include, for example, a first sensor module (not shown) (e.g., a proximity sensor) and/or a second sensor module (not shown) (e.g., a fingerprint sensor) disposed on a front side (101A) of the housing (110), and/or a third sensor module (not shown) (e.g., an HRM sensor) and/or a fourth sensor module (not shown) (e.g., a fingerprint sensor) disposed on a rear side (101B) of the housing (110). In some embodiments (not shown), the fingerprint sensor may be disposed on the rear side (101B) as well as the front side (101A) (e.g., the display (110)) of the housing (110). The electronic device (100) may further include at least one of a sensor module (not shown), for example, a gesture sensor, a gyro sensor, a pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a color sensor, an infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor (not shown).

In one embodiment, the camera module (106, 107) may include, for example, a front camera module (106) disposed on the front (101A) of the electronic device (100), a rear camera module (107) disposed on the rear (101B), a flash (108), and/or a laser light source (109). The camera module (106, 107) may include one or more lenses, an image sensor, and/or an image signal processor. The flash (108) may include, for example, a light-emitting diode or a xenon lamp. The laser light source (109) may include, for example, a vertical-cavity surface-emitting laser (VCSEL). In some embodiments, two or more lenses (infrared camera, wide-angle and telephoto lenses) and image sensors may be disposed on one side of the electronic device (100).

In one embodiment, the key input devices (116, 117) may be positioned on a side (101C) of the housing (110). In other embodiments, the electronic device (100) may not include some or all of the above-mentioned key input devices (116, 117), and the key input devices (116, 117) that are not included may be implemented in other forms, such as soft keys, on the display (110).

In one embodiment, a light-emitting element (not shown) may be disposed, for example, on the front surface (101A) of the housing (110). The light-emitting element (not shown) may provide, for example, status information of the electronic device (100) in the form of light. In another embodiment, the light-emitting element (not shown) may provide, for example, a light source that is linked to the operation of the front camera module (106). The light-emitting element (not shown) may include, for example, an LED, an IR LED, and/or a xenon lamp.

According to one embodiment, the connector hole (113, 114) may include a first connector hole (113) that can accommodate, for example, a connector for transmitting and receiving power and/or data with an external electronic device (e.g., a USB connector) or a connector for transmitting and receiving audio signals with an external electronic device (e.g., an earphone jack), and/or a second connector hole (114) that can accommodate a storage device (e.g., a subscriber identification module (SIM) card). According to one embodiment, the first connector hole (113) and/or the second connector hole (114) may be omitted.

According to one embodiment, the electronic device (100) may further include a pen input device (115). The pen input device (115) (e.g., a stylus pen) may be guided into or removed from the housing (110) through a hole formed in a side surface (112) of the housing (110) of the electronic device (100) and may include a button for easy removal. The pen input device (115) may have a separate resonance circuit built into it and may be linked with an electromagnetic induction panel (e.g., a digitizer) included in the electronic device (100). The pen input device (115) may include an EMR (electro-magnetic resonance) method, an AES (active electrical stylus), and an ECR (electric coupled resonance) method.

FIG. 3 is a perspective view showing an electronic device according to one embodiment and a portion of a pen input device inserted into the electronic device. FIG. 4 is a perspective view of a pen input device according to one embodiment.

Referring to FIG. 3, a hole (116) may be formed in a portion of a housing (110) of an electronic device (100), for example, a portion of a side (112). The electronic device (100) may include a storage space (119) formed through the hole (118), and a pen input device (115) may be inserted into the electronic device (100) through the storage space (119).

According to various embodiments, the pen input device (115) may include a first button (115a) at a first end as a configuration for taking the pen input device (115) out of the storage space (119) of the electronic device (100). When a user presses the first button (115a), repulsive force providing elements (e.g., at least one spring) configured in conjunction with the first button (115a) are operated, so that the pen input device (115) may be removed from the storage space (119).

According to various embodiments, the pen input device (115) may include an antenna device capable of communicating (e.g., BLE (Bluetooth low energy) communication) with the electronic device (100) when stored in the storage space (119) or when removed from the storage space (119) and positioned outside the electronic device (100).

Referring to FIG. 4, the pen input device (115) may include a pen housing (115c) that constitutes the outer shape of the pen input device (115). The pen input device (115) may include an inner assembly (e.g., an inner assembly (120) of FIG. 5 below) that is surrounded by the pen housing (115c) inside the pen housing (115c). The inner assembly may be retractable into the pen housing (115c) and may be integrally provided to be inserted into the pen housing (115c) in a single assembly operation to constitute a complete pen input device (115).

According to various embodiments, the pen housing (115c) may have a body having an overall thin and long shape, and may include a first end and a second end positioned on opposite sides with the body therebetween. The first end may be provided with the first button (115a) mentioned above, and the second end may be provided with a pen tip. Here, the second end may have a shape in which the width becomes narrower as it goes toward the end. An opening may be provided in a part of the pen housing (115c) and a second button (115d) may be provided. When a user presses the second button (115d), various functions (e.g., power on/off and/or pen input, etc.) may be performed by various electronic components included in an internal assembly (e.g., the internal assembly (120) of FIG. 5). The interior of the pen housing (115c) may include an internal space surrounded by the body, the first end, and the second end. According to various embodiments, at least a portion of the pen housing (115c), for example, the body, may be made of a synthetic resin (e.g., plastic) material. And another portion of the pen housing (115c) may be made of, for example, a metallic material (e.g., aluminum).

The pen housing (115c) according to various embodiments may have an elliptical cross-section consisting of a long axis and a short axis, and may be formed in the shape of an elliptical column as a whole. The storage space (119) of the electronic device (100) may also have an elliptical cross-section corresponding to the shape of the pen housing (115c).

Referring to FIG. 4, a logo for indicating product specifications or a brand may be formed on the pen housing (115c). According to the present disclosure, a housing including a logo on an outer surface and a method for manufacturing the housing will be described. Hereinafter, the housing of the present disclosure and the method for manufacturing the housing will be described in detail with reference to the drawings of FIGS. 5 to 7.

FIG. 5 is a cross-sectional view of a pen input device according to one embodiment.

In describing the housing of the present disclosure and the method for manufacturing the housing, the target housing may include the housing (110) and the pen housing (115c) of the electronic device of the above-described embodiment. In the following description, for convenience, the description may be centered on the pen housing (115c). For example, the cross-sectional view of the housing of FIG. 5 may represent a cross-sectional view when the pen housing (115c) of FIG. 4 is cut along the imaginary line A-A'.

As mentioned above, at least a portion (S) of the housing may be formed with a logo to indicate product specifications or a brand. Referring to FIGS. 6 to 11 below, a method of forming a logo on at least a portion (S) of the housing will be described in various embodiments.

First, let's look at the embodiments of FIGS. 6 and 7 (the first comparative embodiment). FIG. 6 is a cross-sectional view of a housing according to one embodiment (the first comparative embodiment). FIG. 7 is a block diagram of a method for manufacturing a housing according to one embodiment (the first comparative embodiment).

Referring to FIG. 6, the housing (200) may include a base material (201). The base material (201) may be formed using at least one of a synthetic resin, glass, glass fiber (GF), metal, and a composite material, or may be formed by combining at least two or more materials. According to one embodiment, when the base material (201) includes a metal material, the base material (201) may be formed through casting, a press method, or the like. According to one embodiment, when the base material (201) is a synthetic resin material, it may be formed through injection. According to one embodiment, when the base material (201) is a heterogeneous material of a synthetic resin and a metal, it may be formed through double injection. According to one embodiment, the base material (201) may include a synthetic resin material. For example, the base material (201) may include PC (polycarbonate) and ABS (acrylonitrile butadiene styrene). In addition, according to an embodiment, the base material (201) may include glass fiber (GF) to increase the rigidity of the product. For example, the base material (201) may include PC, ABS, and glass fiber (GF). According to one embodiment, the base material (201) may be formed of a combination of 10% by weight of glass fiber (GF) and the remaining 90% by weight of PC and ABS.

The housing (200) may include a first primer layer (202). The first primer layer (202) may be a 'material primer' layer for covering a defect in the material. For example, the first primer layer (202) may cover a defect in the material, such as a gas mark generated during injection molding, when the parent material (201) includes a synthetic resin material formed through an injection molding method. In addition, the first primer layer (202) may play a role in increasing the adhesion of the paint of the color layer (203) laminated on the first primer layer (202). According to one embodiment, when the parent material (201) includes PC, ABS, and glass fiber (GF), the glass fiber may include fine protrusions, and the first primer layer (202) may play a role in allowing the color paint to be applied and fixed evenly and smoothly during the subsequent process of forming the color layer (203). According to one embodiment, the first primer layer (202) may include a resin of acrylic, olefin, epoxy, or urethane series, and may include a paint of UV curing method or thermal curing method depending on the curing method. According to one embodiment, the base material (201) to which the first primer layer (202) is applied may be cured through natural drying, thermal curing such as in an oven, or UV curing method.

The housing (200) may include a color layer (203). The color layer (203) may be a layer including a color that is visible on the exterior of the product. The color layer (203) may be laminated on the first primer layer (202) after the first primer layer (202) is cured. According to one embodiment, the color layer (203) may be formed by depositing a color paint on the first primer layer (202). According to one embodiment, the color layer (203) may be formed of various materials depending on the material and environment. For example, a fluid color paint composed of a resin, a solvent, a pigment/dye, an additive, etc. may form the color layer. According to one embodiment, the color layer (203) may be composed of one layer or multiple layers depending on a pre-designated color or material. According to one embodiment, the color paint of the color layer (203) may use a paint containing an organic/inorganic pigment, an organic dye, a silver series or a pearl series powder. According to one embodiment, the color layer (203) may be deposited including at least one series of a material from the Sn series, the Ti series, the Cr series, and the Al series together with the color paint. For example, the color layer (203) may include at least one material from the silicon oxide film (SiO2), the titanium oxide film (TiO2), the aluminum oxide film (Al2O3), the zirconium oxide film (ZrO2), and the tantalum oxide film (Ta2O5) together with color paints of various colors.

The housing (200) may include a second primer layer (204). The second primer layer (204) may be laminated on the color layer (203). The second primer layer (204) may be a layer provided to protect the housing from external stimuli such as scratches and dust before printing of the logo printing layer (205) to be described later. As the second primer layer (204), at least one of a CPO (Chlorinated Polyolefine) series resin, an acrylic resin, and a UV-curable resin may be used.

The housing (200) may include a logo printing layer (205). The logo printing layer (205) may be laminated on the second primer layer (204). The embodiment of FIG. 6 (the first comparative embodiment) may adopt, for example, a silk screen printing method as a method of forming a logo on the housing (200). The logo printing layer (205) may be formed before the coating layer (206) is formed because it cannot be formed on, for example, a coating layer (206) having a soft texture.

The housing (200) may include a coating layer (206). The coating layer (206) may be laminated on a logo printing layer (205). The coating layer (206) may be formed to protect the appearance of a product including a color layer (203) and/or to express a texture of a surface. According to one embodiment, the coating layer (206) may be formed through a coating treatment such as a silicone-based SF (soft feeling) coating, a urethane coating, and/or a UV coating. For example, when the coating layer (206) is formed as a soft-feeling SF coating, logo printing is not possible on the coating layer (206), so the logo printing layer (205) is formed under the coating layer (206).

Referring to FIGS. 6 and 7 together, a housing according to one embodiment (first comparative embodiment) may include four layers in addition to a base material (201) and a logo printing layer (205) on which a logo is formed. A housing according to one embodiment (first comparative embodiment) may include a base material (201), a first primer layer (202), a color layer (203), a second primer layer (204), a logo printing layer (205), and a coating layer (206), and may have a film thickness corresponding thereto.

As illustrated in FIG. 7, a method for manufacturing a housing according to one embodiment (first comparative example) may include a process of preparing a base material (310), a process of forming a first primer layer (320), a process of forming a color layer (330), a process of forming a second primer layer (340), a process of printing a logo (350), and a process of forming a coating layer (360).

With respect to process 310, the process (310) of preparing the base material (201) may be performed in various ways depending on the specified material. For example, the base material (201) may include a synthetic resin, and further, may include glass fiber (SF). In the case where the base material (201) includes a synthetic resin and glass fiber, the process (310) of preparing the base material (201) may include, for example, a process of mixing and stirring glass fiber (SF) and a synthetic resin material, and/or a double injection process.

With respect to process 320, the process (320) of forming the first primer layer (202) is to even out the surface of the base material (201) before deposition of the color layer (203), and may be performed before formation of the color layer (203). The process (330) of forming the first primer layer (202) may be a process of forming a coating film by coating, according to an embodiment, a UV-curable paint or a thermally curable paint on an acrylic, olefin, epoxy, or urethane series resin. According to one embodiment, the process of forming the first primer layer (202) may include a natural drying process, a thermal curing process, or a UV-curing process after applying the resin and the paint.

With respect to the process 330, the process (330) of forming the color layer (203) may be formed by depositing a color paint on the first primer layer (202). A PVD (Physical Vapor Deposition) or CVD (Chemical Vapor Deposition) method may be used as a deposition method of forming the color layer (203). According to one embodiment, the process of forming the color layer (203) may be performed as a single process or may be performed multiple times according to a pre-designated color or material. According to one embodiment, the process (330) of forming the color layer (203) may be deposited by including a material of at least one series among the Sn series, the Ti series, the Cr series, and the Al series together with the color paint.

With respect to process 340, the process (320) of forming the second primer layer (204) may be a process of forming a second primer for protecting the color layer (203) before logo printing. The process (340) of forming the second primer layer (204) may also be a process of forming a film by coating, similarly to the process (320) of forming the first primer layer (202), a UV-curable paint or a heat-curable paint on an acrylic, olefin, epoxy, or urethane series resin according to an embodiment.

With respect to process 350, the logo printing process (350) can be implemented by forming a logo printing layer (205) on the second primer layer (204). As a representative example of a method for printing the logo (L), silk screen printing was mentioned above, but the silk screen printing method is not necessarily the only method for printing the logo (L). For example, in addition to the silk screen printing method, various types of printing methods such as DDP (Direct Digital Printing), gravure printing, thermal transfer printing, water transfer printing, and pad printing can be applied. For convenience, the following description will focus on the silk screen printing method.

In relation to process 360, the process for forming a coating layer (206) (360) may include a process for forming a coating layer (206) by applying a coating solution on a logo printing layer (205) and curing the same. In the process for forming a coating layer (360), the coating layer (206) may be formed through a coating treatment such as a silicone-based SF (soft feeling) coating, a urethane coating, and/or a UV coating.

Referring to FIGS. 6 and 7 together, in a method for manufacturing a housing according to one embodiment (first comparative embodiment), the logo printing process (350) cannot be performed later than the subsequent coating layer forming process (360) because it is difficult to apply a silk screen printing process on a soft-textured coating layer (206). In addition, since the logo printing process (350) is performed between the color layer forming process (330) and the coating layer forming process (360), it is essential to include a second primer layer forming process (340) that forms a second primer layer (204) for protecting the color layer (203).

When there are many processes, such as in the housing manufacturing method according to one embodiment (Comparative Example 1), the thickness of the coating film may increase, and problems may arise in which the quality of the housing surface deteriorates due to variations existing in each process. In addition, as an example, since the housing manufacturing method according to one embodiment (Comparative Example 1) includes at least two primer forming processes (320, 340), the primer forming process procedure must be repeated twice, which may take a long time to manufacture, and as the cost increases, mass productivity may also decrease.

Next, let's look at the embodiments of Figs. 8 and 9 (the second comparative embodiment). Fig. 8 is a cross-sectional view of a housing according to one embodiment (the second comparative embodiment). Fig. 9 is a block diagram of a method for manufacturing a housing according to one embodiment (the second comparative embodiment).

Referring to FIG. 8, the housing (400) may include a base material (401). The base material (401) may be formed using at least one of a synthetic resin, glass, glass fiber (GF), metal, and a composite material, or may be formed by combining at least two or more materials. According to one embodiment, when the base material (401) includes a metal material, the base material (401) may be formed through casting, a press method, or the like. According to one embodiment, when the base material (401) is a synthetic resin material, it may be formed through injection. According to one embodiment, when the base material (401) is a heterogeneous material of a synthetic resin and a metal, it may be formed by double injection. According to one embodiment, the base material (401) may include a synthetic resin material. For example, the base material (401) may include PC (polycarbonate) and ABS (acrylonitrile butadiene styrene). In another embodiment, the base material (401) may include glass fiber (GF) to increase the rigidity of the product. In one embodiment, the base material (401) may include PC, ABS, and glass fiber (GF). In one embodiment, the base material (401) may be formed of a combination of 10% by weight glass fiber (GF) and the remaining 90% by weight PC and ABS.

According to one embodiment (the second comparative embodiment), the housing (400) may be implemented by forming a logo (L) by a laser process, whereby the laser passes through a multilayer coating on the base material (401) and then discolors or etches the color paint included in the color layer (403). The laser used at this time may include various types of lasers such as infrared, ultraviolet, gas, YAG, and fiber (diode) types.

The housing (400) may include a first primer layer (402). The first primer layer (402) may be a 'material primer' layer for covering a defect in a material. For example, the first primer layer (402) may cover a defect in a material, such as a gas mark generated during injection molding, when the parent material (401) includes a synthetic resin material formed through an injection molding method. In addition, the first primer layer (402) may also serve to increase the adhesion of a color paint included in a color layer (403) laminated on the first primer layer (402). According to one embodiment, when the base material (401) includes PC (polycarbonate), ABS (acrylonitrile butadiene styrene), and glass fiber (e.g., glassfiber; GF), the glass fiber may include fine protrusions, and the first primer layer (402) may play a role in allowing the color paint to be applied and fixed evenly and smoothly during the formation of the color layer (403), which is a subsequent process. According to one embodiment, the first primer layer (402) may include an acrylic, olefin, epoxy, or urethane series resin, and may include a UV-curable paint or a thermally curable paint depending on the curing method. According to one embodiment, the base material (401) to which the first primer layer (402) is applied may be cured through natural drying, thermal curing such as in an oven, or UV-curing.

The housing (400) may include a color layer (403). The color layer (403) may be a layer including a color shown on the exterior of the product. The color layer (403) may be laminated on the first primer layer (402) after the first primer layer (402) is cured. According to one embodiment, the color layer (403) may be formed by depositing a color paint on the first primer layer (402). According to one embodiment, the color layer (403) may be formed of various materials depending on the material and environment. For example, a fluid color paint composed of a resin, a solvent, a pigment/dye, an additive, etc. may form the color layer (403). According to one embodiment, the color layer (403) may be composed of one layer or multiple layers depending on a pre-designated color or material. According to one embodiment, the color paint of the color layer (403) may use a paint containing an organic/inorganic pigment, an organic dye, a silver series or a pearl series powder. According to one embodiment, the color layer (403) may be deposited including at least one series of a material from the Sn series, the Ti series, the Cr series, and the Al series together with the color paint. For example, the color layer (403) may include at least one material from the silicon oxide film (SiO2), the titanium oxide film (TiO2), the aluminum oxide film (Al2O3), the zirconium oxide film (ZrO2), and the tantalum oxide film (Ta2O5) together with color paints of various colors. The color layer (403) according to one embodiment (the second comparative embodiment) may include a color paint having a light transmittance of approximately 0%.

The housing (400) may include a second primer layer (404). As the second primer layer (404), at least one of a CPO (Chlorinated Polyolefine) series resin, an acrylic resin, and a UV-curable resin may be used. The second primer layer (404) may be laminated on the color layer (403). The second primer layer (404) may be essentially provided as a buffer layer to prevent a high-energy laser from burning the color layer (403) when the laser is transmitted. The second primer layer (404) according to one embodiment (the second comparative embodiment) may have a light transmittance of approximately 90% or more. For example, the second primer layer (404) may be formed to have a light transmittance close to approximately 100%.

The housing (400) may include a coating layer (406). The coating layer (406) may be laminated on the second primer layer (404). The coating layer (406) may be formed to protect the appearance of the product including the color layer (403) and/or to express the texture of the surface. According to one embodiment, the coating layer (406) may be formed through a coating treatment such as a silicone-based SF (soft feeling) coating, a urethane coating, and/or a UV coating. The coating layer (406) may also have a light transmittance of about 90% or more together with the second primer layer (404). For example, the coating layer (406) may also be formed to have a light transmittance close to about 100%.

Referring to FIGS. 8 and 9 together, a housing according to one embodiment (the second comparative embodiment) may include four layers excluding a base material (401). A housing according to one embodiment (the second comparative embodiment) may include a base material (401), a first primer layer (402), a color layer (403), a second primer layer (404), and a coating layer (406), and may have a film thickness corresponding thereto.

As illustrated in FIG. 9, a method for manufacturing a housing according to one embodiment (second comparative embodiment) may include a process of preparing a base material (510), a process of forming a first primer layer (520), a process of forming a color layer (530), a process of forming a second primer layer (540), a process of forming a coating layer (550), and a process of forming a logo using a laser (560).

With respect to process 510, the process (510) of preparing the base material (401) may be performed in various ways depending on the specified material. For example, the base material (401) may include a synthetic resin, and further, may include glass fiber (SF). In the case where the base material (401) includes a synthetic resin and glass fiber, the process (510) of preparing the base material (401) may include, for example, a process of mixing and stirring glass fiber (SF) and a synthetic resin material, and/or a double injection process.

In relation to process 520, the process (520) of forming the first primer layer (402) is a color layer

(403) The process of leveling the surface of the substrate (401) before deposition of the first primer layer (403) may be performed before the formation of the color layer (403). The process (530) of forming the first primer layer (402) may be a process of forming a coating film by coating a resin of acrylic, olefin, epoxy, or urethane series with a UV-curable paint or a thermally curable paint, depending on the embodiment. According to one embodiment, the process of forming the first primer layer (402) may include a natural drying process, a thermal curing process, or a UV curing process after applying the resin and the paint.

With respect to the process 530, the process (530) of forming the color layer (403) may be formed by depositing a color paint on the first primer layer (402). A PVD (Physical Vapor Deposition) or CVD (Chemical Vapor Deposition) method may be used as a deposition method of forming the color layer (403). According to one embodiment, the process of forming the color layer (403) may be performed as a single process or may be performed multiple times according to a pre-designated color or material. According to one embodiment, the process (530) of forming the color layer (403) may be deposited by including a material of at least one series among the Sn series, the Ti series, the Cr series, and the Al series together with the color paint.

With respect to process 540, the process (520) of forming the second primer layer (404) may be a process of forming a second primer for protecting the color layer (403) from a laser. The process (540) of forming the second primer layer (404) may also be a process of forming a film by coating, similarly to the process (520) of forming the first primer layer (402), a UV-curable paint or a heat-curable paint on an acrylic, olefin, epoxy, or urethane series resin according to an embodiment.

In relation to process 550, the process for forming a coating layer (406) (550) may include a process for forming a coating layer by applying a coating solution on a second primer layer and curing the same. The process for forming a coating layer may be formed through a coating treatment such as a silicone-based SF (soft feeling) coating, a urethane coating, and/or a UV coating.

With respect to process 560, the logo forming process (560) using a laser can be performed by sequentially stacking a base material (401), a first primer layer (402), a color layer (403), a second primer layer (404), and a coating layer (406), and irradiating a laser on the color layer (403) to discolor or etch at least part of the color paint included in the color layer (403). According to one embodiment (the second comparative embodiment), in order to protect the color layer (403) from the high energy of the laser, the second primer layer (404) must be provided on the color layer (403); however, in order not to limit the discoloration or etching process itself, the second primer layer (404) and the coating layer (406) can be formed to have a laser transmittance of approximately 90% or more (90% to 100%).

The method for manufacturing a housing according to one embodiment (the second comparative embodiment) also includes, like the method for manufacturing a housing according to the previously discussed embodiment (the first comparative embodiment), a process of forming a primer at least twice (520, 540). Therefore, since the primer forming process procedure must be repeated twice, the manufacturing time may be long, and since the cost is high, mass productivity may also be reduced.

Let us examine embodiments of the present disclosure of FIGS. 10 and 11. FIG. 10 is a cross-sectional view of a housing according to one embodiment. FIG. 11 is a block diagram of a method for manufacturing a housing according to one embodiment.

Referring to FIG. 10, the housing (600) may include a base material (601). The base material (601) may be formed using at least one of a synthetic resin, glass, glass fiber (GF), metal, and a composite material, or may be formed by combining at least two or more materials. According to one embodiment, when the base material (601) includes a metal material, the base material (601) may be formed through casting, a press method, or the like. According to one embodiment, when the base material (601) is a synthetic resin material, it may be formed through injection. According to one embodiment, when the base material (601) is a heterogeneous material of a synthetic resin and a metal, it may be formed through double injection. According to one embodiment, the base material (601) may include a synthetic resin material. For example, the base material (601) may include PC (polycarbonate) and ABS (acrylonitrile butadiene styrene). In another embodiment, the base material (601) may include glass fiber (GF) to increase the rigidity of the product. In one embodiment, the base material (601) may include PC, ABS, and glass fiber (GF). In one embodiment, the base material (601) may be formed of a combination of 10% by weight glass fiber (GF) and the remaining 90% by weight PC and ABS.

According to one embodiment of the present disclosure, the housing (600) may be implemented by forming a logo (L) by a laser process, whereby the laser penetrates a film on a base material (601) and then discolors or etches the color paint included in the first layer (607). The laser used at this time may include various types of lasers such as infrared, ultraviolet, gas, YAG, and fiber (diode) types.

The housing (600) may include a first layer (607). The first layer (607) may be a mixed layer including a 'material primer' and a color paint for covering a defect in the material. For example, the first layer (607) may include a primer to cover a defect in the material, such as a gas mark generated during injection molding, when the parent material (601) includes a synthetic resin material formed through an injection molding method. In addition, the first layer (607) may include a primer to increase the adhesion of a second layer (603) laminated on the first layer (607). According to one embodiment, when the parent material (601) includes PC (polycarbonate), ABS (acrylonitrile butadiene styrene), and glass fiber (GF), the glass fiber may include fine protrusions, and the first layer (607) may include a primer to keep the smoothness constant. According to one embodiment, the first layer (607) may include a resin of acrylic, olefin, epoxy, or urethane series, and may include a paint of a UV curing method or a thermal curing method depending on the curing method. According to one embodiment, the base material (601) on which the first layer (607) is applied may be cured through natural drying, thermal curing such as an oven, or UV curing.

The first layer (607) may also be a layer including a color shown in the appearance of the product. The first layer (607) may be configured to express a color as the color paint is mixed with a primer and then applied onto the base material (601). For example, the first layer (607) may include a fluid color paint composed of a resin, a solvent, a pigment/dye, an additive, etc. According to one embodiment, the first layer (607) may be configured to form a single-color layer or a multi-color layer according to a pre-designated color or material. According to one embodiment, the color paint of the first layer (707) may use a paint including an organic/inorganic pigment, an organic dye, a silver series or a pearl series powder. According to one embodiment, the first layer (607) may be deposited including at least one series of a material from the Sn series, the Ti series, the Cr series, and the Al series together with the color paint. For example, the first layer (607) may include at least one material among a silicon oxide film (SiO2), a titanium oxide film (TiO2), an aluminum oxide film (Al2O3), a zirconium oxide film (ZrO2), and a tantalum oxide film (Ta2O5) together with color paints of various colors.

According to one embodiment of the present disclosure, the first layer (607) is formed by mixing a primer and a color paint in a specific ratio, and can be formed to have a light transmittance of about 30%±5%, that is, about 25% to about 35%. According to one embodiment of the present disclosure, by including the first layer (607) having a light transmittance of about 25% to about 35%, discoloration or etching of the logo by a laser can be facilitated, while a phenomenon in which the color paint is burned off by a high-energy laser can be prevented. If the light transmittance of the first layer (607) is less than 25%, a phenomenon in which the color paint inside the first layer (607) is burned off may occur, and if the laser transmittance of the first layer (607) is 35% or more, the base material may not be sufficiently etched, so that an unclear logo may be formed.

According to one embodiment of the present disclosure, there is an advantage in that a logo can be effectively formed by irradiating a high-energy laser without including the second primer (204, 404) of the previously described embodiments (first comparative embodiment and second comparative embodiment).

The housing (600) may include a second layer (606). The second layer (606) may be laminated on the first layer (607). The second layer (606) may be formed to protect the appearance of the product and/or express the texture of the surface of the first layer (607). According to one embodiment, the second layer (606) may be a layer formed through a coating treatment such as a silicone-based SF (soft feeling) coating, a urethane coating, and/or a UV coating. According to one embodiment, the second layer (606) may have a light transmittance of about 90% or more. For example, the second layer (606) may be formed to have a light transmittance of about 100% or closer.

Referring to FIGS. 10 and 11 together, a housing according to one embodiment of the present disclosure may include only two layers, including a first layer (607) and a second layer (606), excluding a base material (601). A housing according to one embodiment of the present disclosure may include a base material (601), a first layer (607), and a second layer (606), and may have film thicknesses corresponding thereto.

As illustrated in FIG. 11, a method for manufacturing a housing according to one embodiment of the present disclosure may include a process (710) of preparing a base material (701), forming a primer & color mixture layer (720) (hereinafter, referred to as “the process (720) of forming a first layer”), forming a coating layer (730) (hereinafter, referred to as “the process (730) of forming a second layer”), and forming a logo using a laser (740).

With respect to process 710, the process (710) of preparing the base material (601) may be performed in various ways depending on the specified material. For example, the base material (601) may include a synthetic resin, and further, may include glass fiber (SF). In the case where the base material (601) includes a synthetic resin and glass fiber, the process (710) of preparing the base material (601) may include, for example, a process of mixing and stirring glass fiber (SF) and a synthetic resin material, and/or a double injection process.

With respect to process 720, the process (720) of forming the first layer (607) may be a process of mixing a primer including a UV-curable paint or a heat-curable paint and a color paint including at least one color with a resin of an acrylic, olefin, epoxy, or urethane series, and coating the same on a base material d to form a coating film. According to one embodiment, the process (720) of forming the first layer (607) may include a natural drying process, a heat curing process, or a UV curing process after applying the resin and the paint.

In relation to process 730, the process (730) for forming the second layer (606) may include a process of forming a coated layer by applying a coating solution on the first layer (607) and curing the same. The process (730) for forming the second layer (606) may be formed through a coating treatment such as a silicone-based SF (soft feeling) coating, a urethane coating, and/or a UV coating.

In relation to process 740, the logo forming process (740) using a laser can form a logo (L) by irradiating a laser toward the first layer (607) while the base material (601), the first layer (607), and the second layer (606) are laminated. At this time, the logo (L) can be formed by discoloring or etching the color paint included in the first layer (607) by the laser. In one embodiment (the second comparative embodiment), a second primer layer (404) had to be provided on the color layer (403) in order to protect the color layer (403) from the high energy of the laser. However, in the present embodiment, the transmittance of the first layer (607) is formed to be 30%±5%, that is, approximately 25% to approximately 35%, so that the process of providing a separate primer layer may not be included.

According to the present disclosure, a housing including a smaller number of paint layers than in one embodiment (the first comparative embodiment, the second comparative embodiment) and a method for manufacturing the same are provided, thereby providing a thinner housing. In addition, the mass productivity of the product can be improved through process efficiency, and there is an effect of reducing manufacturing time and costs.

According to one embodiment, an electronic device (e.g., an electronic device (100) of FIG. 1, or a pen input device (115) of FIG. 4) includes a housing (e.g., a housing (600) of FIG. 10) forming an exterior of the electronic device, wherein the housing (600) comprises: a base material (e.g., a base material (601) of FIG. 10); a first layer (e.g., a first layer (607) of FIG. 10) disposed on the base material (601) and containing a color paint; And a second layer (e.g., the second layer (606) of FIG. 10) disposed on the first layer (607) and for protecting the first layer (607), the housing (606) includes a logo formed by a laser irradiated on the first layer (607), and the first layer (607) can provide an electronic device having a light transmittance of 25% to 35%.

In one embodiment, the second layer (606) may have a laser transmittance of 90% or greater.

In one embodiment, the logo may be formed by discoloring or etching the first layer by a laser.

According to one embodiment, the parent material (601) may include a synthetic resin material.

According to one embodiment, the parent material (601) may include PC (polycarbonate) and ABS (acrylonitrile butadiene styrene).

According to one embodiment, the parent material (601) may include glass fiber (GF).

In one embodiment, the first layer (607) may further include a primer.

According to one embodiment, the second layer (606) may be coated using at least one of a silicone-based softfeeling (SF) coating, a urethane-based coating, and a UV (ultra violet) coating.

According to one embodiment, a method for manufacturing an electronic device housing may be provided, including: a process for preparing a base material (e.g., 710 of FIG. 11); a process for forming a first layer containing a color paint on one surface of the base material (e.g., 720 of FIG. 11); a process for forming a second layer for protecting the first layer on one surface of the first layer (e.g., 730 of FIG. 11); and a process for forming a logo by discoloring or etching the first layer using a laser (e.g., 740 of FIG. 11).

According to one embodiment, a housing (e.g., a housing (101) of FIG. 1, a pen housing (115c) of FIG. 4, or a housing (600) of FIG. 10) may be provided, comprising: a base material (e.g., a base material (601) of FIG. 10) comprising a synthetic resin material; a first layer (e.g., a first layer (607) of FIG. 10) disposed on the base material (601), containing a color paint and a primer, and having a light transmittance of 25% to 35%; and a second layer (e.g., a second layer (606) of FIG. 10) disposed on the first layer (607) and coated to protect the first layer, and including a logo formed by a laser irradiated on the exterior.

The embodiments of the present disclosure are presented for the purpose of explaining and understanding the disclosed technical content, and are not intended to limit the scope of the technology described in the present disclosure. Accordingly, the scope of the present disclosure should be interpreted to include all modifications or various other embodiments based on the technical idea of the present disclosure.

Although the detailed description of the present disclosure has described specific embodiments, it will be apparent to those skilled in the art that various modifications may be made without departing from the scope of the present disclosure.

Claims (15)

In an electronic device (100; 115), It includes a housing (600) forming the appearance of the electronic device, The above housing, Mother material (601); A first layer (607) is placed on the above-mentioned base material and contains a color paint; and It is placed on the first layer (607) and includes a second layer (606) for protecting the first layer, The above housing (600) includes a logo (L) formed by a laser irradiated to the first layer (607), An electronic device in which the first layer (607) is formed with a light transmittance of 25% to 35%. In paragraph 1, The second layer (606) is an electronic device having a light transmittance of 90% or more. In claim 1 or 2, The above logo is an electronic device formed by discoloring or etching the first layer by a laser. In any one of claims 1 to 3, The above-mentioned parent material (601) is an electronic device including a synthetic resin material. In paragraph 4, The above-mentioned parent material (601) is an electronic device including glass fiber. In paragraph 5, An electronic device wherein the first layer (607) further includes a primer. In any one of claims 1 to 6, The second layer (606) is an electronic device coated with at least one of a silicone-based softfeeling (SF) coating, a urethane-based coating, and a UV (ultra violet) coating. In a method for manufacturing an electronic device housing, Process of preparing the parent material (710); A process (720) for forming a first layer containing color paint on one surface of the above-mentioned base material; A process (730) for forming a second layer on one side of the first layer to protect the first layer; and A method for manufacturing an electronic device housing, comprising: a process (740) of forming a logo by discoloring or etching the first layer using a laser. In Article 8, A method for manufacturing an electronic device housing, wherein the first layer is formed to have a light transmittance of 25% to 35%. In Article 8, The above second layer is a method for manufacturing a housing having a light transmittance of 90% or more. In Article 8, The above-mentioned parent material is a method for manufacturing a housing including a synthetic resin material. In Article 11, The above-mentioned parent material is a method for manufacturing a housing including PC (polycarbonate) and ABS (acrylonitrile butadiene styrene). In Article 11, The above-mentioned parent material is a method for manufacturing a housing including glass fiber. In Article 13, A method for manufacturing a housing, wherein the first layer further comprises a primer. In any one of paragraphs 8 to 14, A method for manufacturing a housing in which the second layer is coated using at least one of a SF (soft feeling) coating containing a silicone series, a coating containing a urethane series, and a UV (ultra violet) coating.

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