WO2019170125A1

WO2019170125A1 - Electronic device and manufacturing method

Info

Publication number: WO2019170125A1
Application number: PCT/CN2019/077314
Authority: WO
Inventors: 李�杰
Original assignee: Oppo广东移动通信有限公司
Priority date: 2018-03-09
Filing date: 2019-03-07
Publication date: 2019-09-12
Also published as: CN108600420A

Abstract

An electronic device (100), comprising a light-transmitting display screen (13) and infrared light sensors (14). The light-transmitting display screen (13) comprises an upper surface (131) and a lower surface (132) facing away from the upper surface (131). The upper surface (131) comprises a corner-missing rectangular area (1311) and first areas (1312), and the corner-missing rectangular area (1311) and the first areas (1312) are complementary to form a rectangle. The infrared light sensors (14) each comprises a transmitter (141) and a receiver (142). The transmitter (141) transmits infrared rays through a first area (1312), and the receiver (142) is used for receiving the infrared rays transmitted by the transmitter.

Description

Electronic device and manufacturing method

Priority information

The present application claims priority to and the benefit of the patent application No. 201101193185.0 filed on Jan.

Technical field

The present application relates to the field of electronic technologies, and in particular, to an electronic device and a manufacturing method.

Background technique

As mobile phone products move toward the era of full screens, the proportion of screens for mobile phones is increasing, bringing higher demands on hardware and structural technology. Generally, the existing mobile phone sets the infrared light sensor on the top of the screen, but the infrared light sensor cannot be placed in the original position with less space outside the screen. Therefore, how to set the infrared light sensor on the comprehensive screen has become an urgent need to be solved. Puzzle.

Summary of the invention

Embodiments of the present application provide an electronic device and a manufacturing method.

The electronic device of the embodiment of the present application includes:

a light transmissive display screen comprising an upper surface and a lower surface opposite the upper surface, the upper surface comprising a notched rectangular area and a first area complementary to the notch forming a rectangle, a light transmissive display for displaying through the upper surface; and

An infrared light sensor includes a transmitter that emits infrared light through the first region and a receiver that receives the infrared light.

The electronic device of the embodiment of the present application includes:

a light transmissive display screen comprising an upper surface and a lower surface opposite the upper surface;

Wherein, the upper surface comprises a notched rectangular area and a first area complementary to the notch forming a rectangle, and the transparent display screen is displayed by the upper surface;

An infrared light sensor comprising an emitter, the emitter being disposed on a side corresponding to the first region to emit infrared light through the first region.

The method for manufacturing an electronic device according to an embodiment of the present application includes the steps of:

Providing a light transmissive display screen, the transmissive display screen including an upper surface and a lower surface opposite the upper surface, the upper surface including a notched rectangular area and a first area complementary to the notch forming a rectangle The transparent display screen is for displaying through the upper surface; and

A plurality of infrared light sensors are provided, each of the infrared light sensors including a transmitter configured to emit infrared light through the first region and a receiver receiving the infrared light.

Additional aspects and advantages of the present invention will be set forth in part in the description which follows.

DRAWINGS

The above and/or additional aspects and advantages of the present application will become apparent and readily understood from

1 is a perspective view of an electronic device according to an embodiment of the present invention;

2 is a perspective view of a transparent display screen according to some embodiments of the present invention;

3 is a perspective view of a transparent display screen according to some embodiments of the present invention;

4 is a schematic plan view of a transparent display screen according to some embodiments of the present invention;

5 is a schematic cross-sectional view of an electronic device according to some embodiments of the present invention;

Figure 6 is an enlarged schematic view of the portion VI of Figure 4;

Figure 7 is a partially enlarged schematic view of some embodiments of the present invention;

Figure 8 is a partially enlarged schematic view of some embodiments of the present invention;

Figure 9 is a partially enlarged schematic view of some embodiments of the present invention;

Figure 10 is a partially enlarged schematic view of some embodiments of the present invention;

11 is a schematic flow chart of a method of manufacturing an electronic device according to some embodiments of the present invention;

12 is a schematic flow chart of a method of manufacturing an electronic device according to some embodiments of the present invention;

13 is a schematic flow chart of a method of manufacturing an electronic device according to some embodiments of the present invention;

14 is a schematic flow chart of a method of manufacturing an electronic device according to some embodiments of the present invention;

15 is a flow chart showing a method of manufacturing an electronic device according to some embodiments of the present invention.

Description of main components: electronic device 100, transparent cover 11, transparent touch panel 12, transparent display 13, upper surface 131, lower surface 132, notched rectangular area 1311, first area 1312, display area 1313 The frame area 1314, the infrared light sensor 14, the emitter 141, the receiver 142, the coating layer 15, the buffer layer 16, the metal piece 17, and the casing 20.

Detailed ways

The embodiments of the present application are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are intended to be illustrative, and are not to be construed as limiting.

In the description of the present application, it should be noted that the terms "installation", "connected", and "connected" are to be understood broadly, and may be fixed or detachable, for example, unless otherwise specifically defined and defined. Connected, or integrally connected; may be mechanically connected, may be electrically connected or may communicate with each other; may be directly connected, or may be indirectly connected through an intermediate medium, may be internal communication of two elements or interaction of two elements relationship. For those skilled in the art, the specific meanings of the above terms in the present application can be understood on a case-by-case basis.

In the present application, the first feature "on" the second feature may include direct contact of the first and second features, and may also include that the first and second features are not in direct contact but are contacted by additional features between them. .

Electronic devices, such as mobile phones or tablets, generally detect the distance between the electronic device and the user by installing an infrared sensor. Taking a mobile phone as an example, an infrared sensor is provided in an upper area of the mobile phone. When the user makes a voice call or related operation, the mobile phone approaches the head, and the infrared sensor feeds the distance information to the processor, and the processor executes corresponding instructions, such as turning off the light of the display component. In the related art, setting an infrared sensor on an electronic device requires opening a corresponding hole in the casing for transmitting and receiving infrared light signals, but with the development of electronic devices, people are increasingly demanding the appearance and operation experience of the mobile phone. The higher. The mobile phone has been developed in the direction of a full screen, and the full screen mobile phone forms an ultra-narrow bezel between the casing and the display assembly. Since the width of the ultra-narrow bezel is too small, there may not be enough space to open the hole, even if the opening will result in The overall strength of the frame is reduced, which in turn makes the reliability of the electronic device low.

Referring to FIG. 1 , FIG. 2 and FIG. 5 together, the electronic device 100 includes a transparent display 13 , an infrared light sensor 14 and a housing 20 . The electronic device 100 may be a mobile phone or a tablet computer or the like. The electronic device 100 of the embodiment of the present invention is described by taking a mobile phone as an example. Of course, the specific form of the electronic device 100 may be other, and is not limited herein.

The transparent display 13 includes an upper surface 131 and a lower surface 132, and the upper surface 131 is disposed opposite to the lower surface 132. The upper surface 131 includes a notched rectangular area 1311 and a first area 1312, and the first area 1312 is complementary to the notched rectangular area 1311 such that the notched rectangular area 1311 and the first area 1312 integrally form a rectangle. The light transmissive display 13 is used for display through the upper surface 131. The infrared light sensor 14 includes a transmitter 141 that emits infrared light through a first area 1312 and a receiver 142 that receives infrared light.

The infrared light sensor 14 includes a transmitter 141 and a receiver 142. The emitter 141 is used to emit infrared light, and when the emitted infrared light encounters an obstacle in the detection direction, a part of the infrared light is reflected back and received by the receiver 142. After the processor calculates the time from the emission to the reflection of the infrared light, the distance between the electronic device 100 and the obstacle can be determined and adjusted accordingly. When the user answers or makes a call, the electronic device 100 approaches the head, the transmitter 141 emits infrared light, and the receiver 142 receives the reflected infrared light, and the processor calculates the time from the emission to the reflection of the infrared light, and sends out corresponding The command control screen is turned off. When the electronic device 100 is away from the head, the processor again performs calculation based on the feedback data and issues an instruction to control the screen to light. In this way, not only the user's misoperation is prevented, but also the power of the mobile phone is saved.

Further, in some examples, the emitter 141 and the receiver 142 of the infrared light sensor 14 are of unitary construction. Specifically, when the infrared light sensor 14 is of a unitary structure, the emitter 141 and the receiver 142 of the infrared light sensor 14 may be disposed in the first region 1312. Of course, the emitter 141 can also be disposed below the first region 1312, and the receiver 142 can be disposed at any position below the light-transmitting display screen 13. Of course, in other examples, the emitter 141 and receiver 142 of the infrared light sensor 14 can also be of a split configuration. Specifically, when the transmitter 141 and the receiver 142 are in a separate structure, the transmitter 141 can be disposed in the first area 1312, and the receiver 142 can be disposed at any position under the transparent display screen 13. It can be understood that, in any of the above manners, the infrared light emitted by the infrared light sensor 14 can be prevented from affecting the working stability of the transparent display 13TFT, so that the transparent display 13 and the infrared light sensor 14 can be in mutual Implement their respective functions without interference. Further, in some embodiments, a plurality of first regions 1312 are present on the transparent display screen 13, and an emitter 141 may be disposed in each of the first regions 1312 to prevent infrared light emitted by the emitter 141 from being transmitted. The process is attenuated and cannot be accurately received by the receiver 142.

The housing 20 is for housing components such as the transparent display 13 and the infrared light sensor 14. In this way, external factors can be prevented from causing direct damage to these components. The housing 20 can be formed by machining an aluminum alloy by a CNC machine tool, or can be injection molded from a polycarbonate (PC) or a PC+ABS material.

In summary, in the electronic device 100 and the manufacturing method of the embodiment of the present invention, the electronic device 100 adopts the transparent display 13 , so that the infrared light sensor 14 can be disposed under the transparent display 13 in the case of a full screen. Setting the emitter 141 of the infrared light sensor 14 in the first region 1312 can prevent the emitted infrared rays from affecting the working stability of the TFT of the transparent display screen 13, so that the transparent display screen 13 and the infrared light sensor 14 can be in mutual Implement their respective functions without interference. At the same time, a plurality of first regions 1312 are present on the transparent display screen 13, which can meet the setting requirements of the infrared light sensor 14, and a plurality of infrared light sensors 14 can be disposed in the plurality of first regions 1312 to avoid the emitted infrared light. Attenuation during transmission causes the infrared light sensor 14 to be unstable.

Specifically, referring to FIGS. 2 and 3, in some examples, the notched corner of the notched rectangular region 1311 may be rounded. In other examples, the notched corner of the notched rectangular region 1311 can be triangular. It will be understood that these shapes are merely exemplary and embodiments of the invention are not limited thereto.

Referring again to FIGS. 2 and 3, in some embodiments, the upper surface 131 of the light transmissive display 13 includes a display area 1313. The display area 1313 includes a first area 1312. The first area 1312 is for display when the infrared light sensor 14 is not operating. That is, when the infrared light sensor 14 is operating, the first area 1312 is not used for display. When the infrared light sensor 14 is not operating, the first area 1312 is for display.

With further reference to FIGS. 2 and 3, in some embodiments, the upper surface 131 of the light transmissive display 13 includes a bezel area 1314. The bezel area 1314 includes a first area 1312. The first area 1312 is for display when the infrared light sensor 14 is not operating. That is, when the infrared light sensor 14 is operating, the first area 1312 is not used for display. When the infrared light sensor 14 is not operating, the first area 1312 is for display.

In some embodiments, the light transmissive display 13 includes an OLED display.

Specifically, an Organic Light-Emitting Diode (OLED) display screen has good light transmittance and is capable of passing visible light and infrared light. Therefore, the OLED display does not affect the infrared light sensor 14 to emit and receive infrared light in the case of exhibiting the effect of the content. The transparent display 13 can also adopt a Micro LED display, which also has good light transmittance for visible light and infrared light. Of course, these display screens are merely exemplary, and embodiments of the invention are not limited thereto.

Referring to FIG. 5 , in some embodiments, the electronic device 100 further includes a transparent cover 11 and a transparent touch panel 12 . The transparent cover 11 is formed on the transparent touch panel 12, and the transparent touch panel 12 is disposed on the transparent display 13. The upper surface 131 of the transparent display 13 faces the transparent touch panel 12, and the transparent cover Both the board 11 and the transparent touch panel 12 have a visible light transmittance and an infrared light transmittance of more than 90%.

Specifically, the transparent touch panel 12 is mainly used to receive an input signal generated by the user when the transparent touch panel 12 is touched and transmitted to the circuit board for data processing, thereby obtaining a specific touch of the transparent touch panel 12 by the user. position. The In-Cell or On-Cell bonding technology can be used to laminate the transparent touch panel 12 and the transparent display panel 13, thereby effectively reducing the weight of the display and reducing the overall thickness of the display. In addition, the transparent cover 11 is disposed on the transparent touch panel 12, which can effectively protect the transparent touch panel 12 and its internal structure, and avoid external force on the transparent touch panel 12 and the transparent display. 13 damage. The transmissive cover 11 and the transparent touch panel 12 have a transmittance of more than 90% for visible light and infrared light, which is not only advantageous for the transparent display 13 to display the display content, but also beneficial for the transparent display. The infrared light sensor 14 under the screen 13 stably emits and receives infrared light, which ensures the normal operation of the infrared light sensor 14.

Referring to FIG. 2 and FIG. 3, in some embodiments, the ratio of the area of the display area 1313 to the transparent cover 11 is greater than 90%.

Specifically, by setting the ratio of the display area 1313 and the transparent cover 11 so that the transparent display 13 is pasted through the transparent cover 11, the display area 1313 can display the content effect in a larger size area, not only improving A good user experience, and also effectively increase the screen ratio of the electronic device 100, to achieve a full screen effect.

Referring to FIG. 5 , in some embodiments, the electronic device 100 further includes a coating layer 15 . The coating layer 15 is applied to the bezel area 1314 and covers the infrared light sensor 14, which is used to transmit infrared light and intercept visible light.

In some embodiments, the coating layer 15 comprises an IR ink having an IR transmittance of greater than 85% for infrared light, a transmittance of less than 6% for visible light, and a wavelength of 850 nm for IR ink permeable to IR light. -940 nm.

Specifically, the coating layer 15 may employ an IR ink. Since the IR ink has a characteristic of low transmittance to visible light, when the electronic device 100 is viewed from the outside, the human eye-based vision cannot be perceived to be disposed under the coating layer 15. Infrared light sensor 14. At the same time, since the IR ink has the characteristics of high transmittance to infrared light, the infrared light sensor 14 can stably emit and receive infrared light, and the normal operation of the infrared light sensor 14 is ensured.

In some embodiments, the infrared light sensor 14 includes a proximity sensor that includes a signal transmitter and a signal receiver for transmitting infrared light through the first region 1312, the signal receiver for receiving infrared reflected by the object Light is used to detect the distance of the object from the electronic device 100.

Specifically, when the user answers or makes a call, the electronic device 100 approaches the head, the signal transmitter emits infrared light, the signal receiver receives the reflected infrared light, and the processor calculates the time when the infrared light is emitted from the reflection to the reflection. The corresponding command control screen goes out. When the electronic device 100 is away from the head, the processor again performs calculation based on the feedback data and issues an instruction to control the screen to light. In this way, not only the user's misoperation is prevented, but also the power of the mobile phone is saved.

Referring to Figures 2 and 3, in some embodiments, the upper surface 131 includes a plurality of first regions 1312, and an emitter 141 is placed in each of the first regions 1312. In this way, it can be ensured that the receiver 142 can stably receive the infrared light reflected by the object to accurately detect the distance between the object and the electronic device 100.

Referring to Figure 6, in some embodiments, transmitter 141 and receiver 142 are of a split configuration.

Specifically, when the infrared light sensor 14 is in a split configuration, the emitter 141 of the infrared light sensor 14 can be disposed below the first region 1312, and the receiver 142 can be disposed at any position below the bezel region 1314. Referring to FIG. 8, in some embodiments, when the space of the first region 1312 can satisfy the simultaneous setting of the transmitter 141 and the receiver 142, the transmitter 141 and the receiver 142 can be simultaneously disposed in the first region 1312.

Referring to FIG. 7, in some embodiments, the transmitter 141 can be disposed in the first region 1312 and the receiver 142 can be disposed in the display region 1313.

Referring to FIG. 9, in some embodiments, the transmitter 141 and the receiver 142 are of unitary construction.

Specifically, when the infrared light sensor 14 is of a unitary structure, both the emitter 141 and the receiver 142 of the infrared light sensor 14 may be disposed in the first region 1312. Referring to FIG. 10, in some examples, the transmitter 141 can be disposed in the first region 1312 and the receiver 142 disposed in the bezel region 1314. Further, in some examples, the transmitter 141 may be disposed in the first area 1312 and the receiver 142 may be disposed in the display area 1313.

Referring to FIG. 5 , in some embodiments, the electronic device 100 further includes a buffer layer 16 covering the lower surface 132 .

Specifically, the buffer layer 16 is used to mitigate the impact force and shockproof to protect the transparent touch panel 12 and the transparent display screen 13 and the internal structure thereof, thereby preventing the display screen from being damaged by external impact. The cushioning layer 16 can be made of foam or foam or rubber or other soft material. Of course, these cushioning materials are merely exemplary, and embodiments of the invention are not limited thereto.

With further reference to FIG. 5 , in some embodiments, the electronic device 100 further includes a metal sheet 17 covering the buffer layer 16 .

Specifically, the metal piece 17 is used to shield electromagnetic interference and grounding, and has a function of diffusing temperature rise. The metal piece 17 can be cut out from a metal material such as copper foil or aluminum foil. Of course, these metal materials are merely exemplary, and embodiments of the invention are not limited thereto.

Referring to FIG. 11 , an embodiment of the present invention provides a method for manufacturing an electronic device 100 , including the following steps:

S301, a transparent display screen 13 is provided. The transparent display screen 13 includes an upper surface 131 and a lower surface 132. The lower surface 132 is opposite to the upper surface 131. The upper surface 131 includes a notched rectangular area 1311 and a first area 1312. The first area 1312 complements the notched rectangular area 1311 to form a rectangle. The light transmissive display 13 is used for display through the upper surface 131.

S302, a plurality of infrared light sensors 14 are provided, each of the infrared light sensors 14 including a transmitter 141 and a receiver 142. The emitter 141 emits infrared rays through the first region 1312, and the receiver 142 is configured to receive infrared rays.

Specifically, the electronic device 100 adopts the transparent display screen 13, so that the infrared light sensor 14 can be disposed under the first region 1312 in the case of a full screen, and the transparent display 13 and the infrared light sensor 14 can interfere with each other. In the case of achieving their respective functions. The transparent display 13 can be an OLED display (Organic Light-Emitting Display). The OLED display has good light transmission and can pass visible light and infrared light. Therefore, the OLED display does not affect the infrared light sensor 14 to emit and receive infrared light in the case of exhibiting the effect of the content. The transparent display 13 can also adopt a Micro LED display, which also has good light transmittance for visible light and infrared light. Of course, these display screens are merely exemplary, and embodiments of the invention are not limited thereto.

Referring to FIG. 12, in some embodiments, the manufacturing method of the electronic device 100 further includes the following steps:

S303, a transparent touch panel 12 is disposed on the transparent display 13; and

S304, a transparent cover 11 is disposed on the transparent touch panel.

Specifically, the transparent touch panel 12 is mainly used to receive an input signal generated by the user when the transparent touch panel 12 is touched and transmitted to the circuit board for data processing, thereby obtaining a specific touch of the transparent touch panel 12 by the user. position. The In-Cell or On-Cell bonding technology can be used to laminate the transparent touch panel 12 and the transparent display panel 13, thereby effectively reducing the weight of the display and reducing the overall thickness of the display. In addition, the transparent cover panel 11 is disposed on the transparent touch panel 12 to protect the transparent touch panel 12 and its internal structure, thereby avoiding damage to the transparent touch panel 12 by external forces.

Referring to FIG. 13 , in some embodiments, the manufacturing method of the electronic device 100 further includes the following steps:

S305, a coating layer 15 is applied to the bezel area 1314 for transmitting infrared light and intercepting visible light.

Referring to FIG. 14 , in some embodiments, the manufacturing method of the electronic device 100 further includes the following steps:

S306, a buffer layer 16 is disposed on the lower surface 132, and the buffer layer 16 covers the lower surface 132.

Referring to FIG. 15 , in some embodiments, the manufacturing method of the electronic device 100 further includes the following steps:

S307, a metal piece 17 is disposed under the buffer layer 16, and the metal piece 17 covers the buffer layer 16.

Specifically, the metal piece 17 is used for shielding electromagnetic interference and grounding, and has a function of diffusing temperature rise. The metal piece 17 can be cut by using a metal material such as copper foil or aluminum foil. Of course, these metal materials are merely exemplary, and embodiments of the invention are not limited thereto.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples", etc. The specific features, structures, materials, or characteristics described in the embodiments or examples are included in at least one embodiment or example of the application. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

While the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art The scope of the present application is defined by the claims and their equivalents.

Claims

An electronic device, comprising:

a light transmissive display screen comprising an upper surface and a lower surface opposite the upper surface, the upper surface comprising a notched rectangular area and a first area complementary to the notch forming a rectangle, a light transmissive display for displaying through the upper surface; and

An infrared light sensor includes a transmitter that emits infrared light through the first region and a receiver that receives the infrared light.
The electronic device of claim 1 wherein said upper surface comprises a display area, said display area comprising a first area, said first area being for display when said infrared light sensor is inoperative.
The electronic device of claim 1 wherein said upper surface comprises a bezel region, said bezel region comprising a first region, said first region being for display when said infrared light sensor is inoperative.
The electronic device of claim 1 wherein the infrared light sensor comprises a proximity sensor, the proximity sensor comprising a signal transmitter and a signal receiver, the signal transmitter for transmitting infrared light through the first region The signal receiver is configured to receive infrared light reflected by the object to detect a distance between the object and the electronic device.
The electronic device according to claim 4, wherein said first area comprises a plurality, and said first area is provided with said emitter.
The electronic device of claim 4 wherein said transmitter and said receiver are of a split configuration.
The electronic device of claim 1 wherein said transmitter and said receiver are of unitary construction.
The electronic device of claim 1 wherein said light transmissive display comprises an OLED display.
The electronic device of claim 2, wherein the electronic device further comprises a transparent touch panel and a transparent cover plate formed on the transparent touch panel, wherein the transparent touch panel is disposed at On the transparent display screen, the upper surface faces the transparent cover plate, and the visible light transmittance and the infrared light transmittance of the transparent cover plate and the transparent touch panel are both greater than 90%.
The electronic device according to claim 9, wherein a ratio of an area of the display area to the transparent cover plate is greater than 90%.
The electronic device of claim 3, wherein the electronic device further comprises:

a coating layer coated on the frame region and covering the infrared light sensor for transmitting infrared light and intercepting visible light.
The electronic device according to claim 11, wherein the coating layer comprises an IR ink, the infrared transmittance of the IR ink is greater than 85%, and the visible light transmittance of the IR ink is less than 6%. The IR ink permeable infrared light has a wavelength of 850 nm to 940 nm.
The electronic device of claim 1 wherein said electronic device further comprises a buffer layer overlying said lower surface.
The electronic device of claim 1 wherein said electronic device further comprises a metal sheet covering said buffer layer.
An electronic device, comprising:

a light transmissive display screen comprising an upper surface and a lower surface opposite the upper surface;

Wherein, the upper surface comprises a notched rectangular area and a first area complementary to the notch forming a rectangle, and the transparent display screen is displayed by the upper surface;

An infrared light sensor includes an emitter disposed on a side corresponding to the first region and emitting infrared rays through the first region.
A method of manufacturing an electronic device, comprising the steps of:

Providing a light transmissive display screen, the transmissive display screen including an upper surface and a lower surface opposite the upper surface, the upper surface including a notched rectangular area and a first area complementary to the notch forming a rectangle The light transmissive display screen is for displaying through the upper surface; and providing a plurality of infrared light sensors, each of the infrared light sensors including a transmitter configured to emit infrared rays through the first region and A receiver that receives the infrared rays.
The manufacturing method according to claim 16, wherein said manufacturing method further comprises the steps of:

Providing a transparent touch panel on the transparent display screen; and

A transparent cover plate is disposed on the transparent touch panel.
The manufacturing method according to claim 16, wherein said manufacturing method further comprises the steps of:

A coating layer is applied to the bezel area for transmitting infrared light and intercepting visible light.
The manufacturing method according to claim 16, wherein said manufacturing method further comprises the steps of:

A buffer layer is disposed on the lower surface, the buffer layer covering the lower surface.
The manufacturing method according to claim 19, wherein said manufacturing method further comprises the steps of:

A metal sheet is provided, the metal sheet covering the buffer layer.