US20170300142A1

US20170300142A1 - Display Screen Assembly, Terminal Front Cover, and Terminal

Info

Publication number: US20170300142A1
Application number: US15/637,965
Authority: US
Inventors: Yuanqing Zeng
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2015-07-24
Filing date: 2017-06-29
Publication date: 2017-10-19
Also published as: EP3197136B1; US20170229062A1; WO2017016350A1; US10698509B2; CN105187573A; EP3197136A1; EP3197136A4; ES2718070T3; CN105187573B

Abstract

A display screen assembly includes a display screen, a light guide plate, a touch panel, and a cover plate that are sequentially stacked. The display screen includes a display surface having a display region and a non-display region. The non-display region surrounds the display region. The light guide plate covers the non-display region correspondingly. The light guide plate has a light source disposed on an outer edge thereof and the light source is configured for illuminating the light guide plate. The touch panel covers the light guide plate; the touch panel has virtual keys provided thereon. The cover plate includes a light transmission window and a light shielding band surrounding the sides of the light transmission window. The light of the display region transmits through the light transmission window. The light shielding band includes a keypad region and a shielding region disposed around the keypad region.

Description

CROSS-REFERENCE TO RELATED APPLICATION(S)

This application is a continuation of U.S. application Ser. No. 15/495,510, filed on Apr. 24, 2017, which is a continuation-in-part of International Application No. PCT/CN2016/086709, filed on Jun. 22, 2016, which claims priority to Chinese Patent Application No. 201510443131.1, filed on Jul. 24, 2015, the contents of all of which are herein incorporated by reference in their entireties.

TECHNICAL FIELD

The present disclosure relates to the field of display screen, and particularly to a display screen assembly, a terminal front cover, and a terminal.

BACKGROUND

The display screen assembly of a traditional mobile phone is composed of a cover plate and a display screen. The cover plate is laminated on the display screen. The inner surface of the cover plate is generally divided into two parts, that is, an ink area and a display region. The ink area is formed by applying an ink layer on the inner surface of the cover plate. The ink layer is used to shield the area at the edge of the display screen where images cannot be displayed, while the display region is an area where the cover plate can effectively display images of the display screen. Generally, the ink area does not display any images on the exterior surface of the cover plate, and therefore, the ratio of the display region to the exterior surface of the cover plate cannot be improved. It can be difficult to obtain a larger display screen and is not ergonomic.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic view of a display screen assembly according to an implementation of the present disclosure.

FIG. 2 is a cross-sectional view of the display screen assembly illustrated in FIG. 1.

FIG. 3 is a schematic view of a terminal front cover according to an implementation of the present disclosure.

FIG. 4 is a cross-sectional view of the terminal front cover according to an implementation of the present disclosure.

FIG. 5 is a cross-sectional view of a terminal according to an implementation of the present disclosure.

DETAILED DESCRIPTION

Hereinafter, implementations of the present disclosure are described in detail, examples of which are illustrated in the accompanying drawings, where the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout the specification. The implementations described below with reference to the accompanying drawings are exemplary and are for the purpose of explaining the present disclosure, and should not be construed as limiting the present disclosure.
In the description of the present disclosure, the orientation or positional relationship indicated by the terms “center”, “up”, “down”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside” and the like, is based on the orientation or positional relationship illustrated in the drawings and merely for the purpose of facilitating the description of the present disclosure and simplifying description, rather than indicating or implying that the device or element referred to must have a specific orientation or constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present disclosure.
It should be noted that, the terms “first”, “second” are used merely for the purpose of description, and should not be interpreted as indicative or suggestive of the relative importance or implied quantity of the technical characteristics indicated. Thus, the characteristics defined by the terms “first” and “second” can include one or more of the features, either explicitly or implicitly. Further, in the description of the present disclosure, unless otherwise stated, “multiple” means two or more than two.
According to an implementation of the present disclosure, there is provided a display screen assembly. The display screen assembly includes a display screen, a light guide plate, a touch panel, and a cover plate that are sequentially stacked. The display screen includes a display surface having a display region and a non-display region. The non-display region surrounds the display region. The light guide plate covers the non-display region correspondingly. The light guide plate has a light source disposed on an outer edge thereof and the light source is configured for illuminating the light guide plate. The touch panel covers the light guide plate. The touch panel has virtual keys provided thereon. The cover plate comprises a light transmission window and a light shielding band surrounding the circumference of the light transmission window, where the light of the display region is configured to transmit through the light transmission window. The light shielding band comprises a keypad region and a shielding region disposed around the keypad region. The light of the light guide plate transmits through the keypad region. The keypad region is disposed corresponding to the virtual keys of the touch panel. The shielding region is configured to obscure the light of the light guide plate.
As one implementation, the cover plate includes an inner surface adjacent to the touch panel. The inner surface has an ink layer disposed thereon at a location corresponding to the shielding region of the light shielding band.
As one implementation, the keypad region is provided with key pattern codes which identify the virtual keys.
As one implementation, the light guide plate and the display screen have an optical adhesive layer disposed there-between.
As one implementation, the display screen assembly further comprises a strip-shaped light source drive board adjacent to an outer edge of the light guide plate. The light source includes a plurality of LED lamp beads disposed on the light source drive board and arranged along the longitudinal direction of the light guide plate, the LED lamp beads are configured to emit light toward the light guide plate.
As one implementation, the cover plate includes an outer surface provided opposite the inner surface, and the edge of the outer surface is curved in a circular arc.
According to an implementation of the present disclosure, there is provided a front cover for a terminal. The front cover includes the display screen assembly of any of the foregoing implementation, and further comprising a frame fixed on a peripheral edge of the cover plate.
As one implementation, the cover plate and the frame are integrally molded.
As one implementation, an inner side of the frame is provided with a groove, the groove is configured to accommodate the light source.
According to another implementation of the present disclosure, there is provided a terminal. The terminal includes the front cover of any of the foregoing implementations and further includes a rear cover and a control assembly. The rear cover is provided with a receiving chamber, the receiving chamber has an open end situated on an outer surface of the rear cover, the front cover covers the open end, the display screen and the control assembly are received in the receiving chamber, and the control assembly is electrically coupled to the display screen to control the display screen.
Implementations of the present disclosure will be described in detail. In the following, the same reference numerals are used to refer to the same or similar elements throughout the specification.
A display screen assembly 100 according to an implementation of the first aspect will be described with reference to FIG. 1 and FIG. 2.
As illustrated in FIG. 1, the display screen assembly 100 according to the implementation of the first aspect includes a display screen 10 (specifically, a display panel), a lighting assembly such as a light guide plate 20 and/or additional components thereof (a light source for example), the touch panel 30, and a cover plate 40. As another implementation, the lighting assembly can also be an annular LED array.
As illustrated in FIG. 1 and FIG. 2, the display screen 10, the light guide plate 20, the touch panel 30, and the cover plate 40 are sequentially stacked. The display screen 10 includes a display surface 11. The display surface 11 has a display region 111 and a non-display region 112. The non-display region 112 surrounds the display region 111. The light guide plate 20 is arranged on one side (for example, the upper side of FIG. 1 and FIG. 2) of the display screen 10 that is adjacent to the display surface 11. The light guide plate 20 covers the non-display region 112. The outer edge of the light guide plate 20 is provided with a light source 20 a. The light source 20 a is configured to illuminate the light guide plate 20.
The display surface 11 is disposed on one side of the display screen 10 that is adjacent to the light guide plate 20. The display region 111 is an area of the display screen 10 that can display image information effectively. The non-display region 112 is an area of the display screen 10 that cannot display the image information effectively. Normally, the non-display region 112 is used for circuit connection, or is provided with a backlight lamp, or is used for packaging a liquid crystal layer of the display screen 10. The display screen 10 can be one of a LCD (Liquid Crystal Display) screen and a LCM (LCD Module) component. The display screen 10 can also be a widely used touch screen. For example, the display screen 10 can be an in-cell touch screen in which a touch layer is embedded into liquid crystal pixels. The display screen 10 can be an on-cell touch screen in which the touch layer is arranged on the liquid crystal pixels. The display screen 10 can also be a full-fit touch screen in which the touch layer is fully attached to the cover plate.
The touch panel 30 is disposed on one side (for example, the upper side of FIG. 1 and FIG. 2) of the light guide plate 20 that is remote from the display screen 10. The touch panel 30 covers the light guide plate 20. The touch panel 30 is provided with at least one virtual key (not illustrated in the figures). For ease of explanation, in the following, take one virtual key as an example for description.
The cover plate 40 is provided on one side of the touch panel 30 that is remote from the light guide plate 20. The cover plate 40 includes a light transmitting portion 41 (can be referred to as a light transmission window) and a light shielding band 42 enclosing the periphery of the light transmitting portion 41 (that is, surrounding the light transmitting portion 41). The light emitted from the light source 20 a are adapted to pass through the light guide plate 20, a keypad region 421, and the light transmitting portion 41.
The keypad region 421 is configured to be illuminated by the light of the lighting assembly such as the light guide plate, more specifically, the light source 20 a. The light transmitting portion 41 passes through the light of the display region 111 correspondingly. The light shielding band 42 includes the keypad region 421 and areas other than the keypad region 421. The areas other than the keypad region 421 can be provided around the keypad region 421 and can be referred to as a shielding region 422. The keypad region 421 can be illuminated by the light of the light guide plate 20 and pass through the light of the light guide plate 20. The keypad region 421 can be disposed corresponding to the virtual key of the touch panel 30 (that is, the keypad region 421 corresponds to the virtual key). The shielding region 422 shields the light of the light guide plate 20.
In the display screen assembly 100 according to the implementation of the present disclosure, the light guide plate 20 is configured to cover the light guide plate 20 correspondingly, and the light source 20 a is configured to illuminate the light guide plate 20. Besides, the light shielding band 42 is configured to include the keypad region 421 and the shielding region 422 provided around the keypad region 421. The keypad region 421 is configured to pass through the light of the light guide plate 20 and is arranged corresponding to the virtual key of the touch panel 30. The shielding region 422 is configured to shield the light of the light guide plate 20, such that the non-display region 112 of the display screen 10 can be utilized and the space of the display screen assembly 100 used to arrange keys can be saved, and therefore, the display region of the display screen assembly 100 can be enlarged effectively and this is ergonomic. It is to be understood that the display screen assembly 100 is applicable to a terminal device. The terminal device can be one of a mobile phone, a notebook computer, a tablet computer, an electronic reader, an electronic album, a display and the like.
The light guide plate 20 has a first surface and a second surface which are disposed opposite to each other. The first surface is adjacent to the display screen 10 and the second surface is adjacent to the touch panel 30. The first surface and the second surface can be formed as planes parallel to each other, or, the second surface can be formed as an arc-shaped surface. For example, as illustrated in FIG. 1, the light guide plate 20 is annular. The light guide plate 20 includes a bottom surface 21 (i.e., the first surface) and a top surface 22 (i.e., the second surface) which are disposed opposite to each other. The light guide plate 20 further includes an outer side surface 23 provided between the bottom surface 21 and the top surface 22. The bottom surface 21 is correspondingly attached to the non-display region 112 of the display surface 11. The top surface 22 is attached to the touch panel 30. The outer side surface 23 corresponds to the edge of the display surface 11. The outer side surface 23 is configured to receive the light of the light source 20 a, whereby the light guide plate 20 can be illuminated and the top surface 22 can emit light. The light emitted by the top surface 22 can pass through the touch panel 30 as well as the keypad region 421, thus making the keypad region 421 visible. In this way, the keypad region 421 can identify the virtual key of the touch panel 30, and the non-display region 112 of the display surface 11 can be utilized to receive touch instructions. In this implementation, the top surface 22 is parallel to the bottom surface 21, so that the thickness of the light guide plate 20 can be reduced. In other implementations, the top surface 22 may be an arc-shaped surface such that the light emitting area of the top surface 22 is larger and the area of the keypad region 421 can be increased.
In this implementation, the touch panel 30 can be integrated into the cover plate 40, that is, the touch panel 30 is integrated with the cover plate 40, and in other words, the touch panel 30 is integrally formed with the cover plate 40. The touch panel 30 covers the light guide plate 20 correspondingly and covers the display region 111 of the display screen 10, such that the touch panel 30 corresponding to the non-display region 112 or the display region 111 can realize the input of touch instructions. Multiple virtual keys can be provided. The multiple virtual keys can implement input of multiple different key instructions. In other implementations, the touch panel 30 is annular; the touch panel 30 correspondingly covers the light guide plate 20.
In this implementation, the cover plate 40 is made of glass. The cross-section of the cover plate 40 is parallel to the display surface 11 of the display screen 10. The cover plate 40 is a rectangular plate member. The cover plate 40 includes an outer surface 40 a and an inner surface 40 b which are disposed opposite to each other. The outer surface 40 a faces the user and is the exterior surface of the cover plate 40. The inner surface 40 b deviates from the user. The inner surface 40 b covers the light guide plate 20 and the display region 111 correspondingly. The light transmitting portion 41 of the cover plate 40 can enhance the light transmittance of the display screen 10 and can enhance the visual effect of the display screen assembly 100. The light shielding band 42 shields the light guide plate 20; that is, the light shielding band 42 covers the non-display region 112 of the display screen 10, thereby preventing (or limiting) the non-display region 112 from affecting the visual effect. The cover plate 40 further includes an outer side wall 43 secured between the outer surface 40 a and the inner surface 40 b. The outer side wall 43 may be fixed to the housing of the terminal device. The cover plate 40 is a transparent hard plate member. The cover plate 40 has a good protective effect on the display screen 10 and can achieve good light transmission.
Further, an ink layer 42 a is provided between the cover plate 40 and the touch panel 30. The ink layer 42 a corresponds to the shielding region 422 of the light shielding band 42. As illustrated in FIG. 1 and FIG. 2, the cover plate 40 includes an inner surface 40 b close to the touch panel 30. The inner surface 40 b is provided with the ink layer 42 a corresponding to the shielding region 422 of the light shielding band 42. As one implementation, the ink layer 42 a is printed on the inner surface 40 b by a screen printing technique. By virtue of the opacity of the ink layer 42 a, covering of the non-display region 112 can be achieved, and partial light of the light guide plate 20 is prevented from passing through. Normally, the ink layer 42 a is black; the ink layer 42 a causes the light shielding band 42 to be black. In other situations, the ink layer 42 a may also use white ink.
Further, the keypad region 421 is provided with a key pattern code(s) (not illustrated). The key pattern code is configured to identify the virtual key. As one implementation, the key pattern code is provided in a blank area of the ink layers 42 a. Multiple different key pattern codes may be provided for multiple keypad regions 421, and each key pattern code can be configured to represent a key with a different function. When the light guide plate 20 is illuminated, the light of the light guide plate 20 passes through the key pattern code, such that the key pattern code glows and the pattern identified by the key pattern code can be seen on the exterior surface of the cover plate 40, and it is possible to identify a corresponding virtual key and use it to realize instruction input.
Further, an optical adhesive layer 20 b is provided between the light guide plate 20 and the display screen 10. The light guide plate 20 is bonded to the display screen 10 via the optical adhesive layer 20 b; in one aspect, this enhances the stable structure of the display screen assembly 100, in another aspect, the light guide plate 20 is directly attached to the display screen 10; therefore, the display screen 10 and the light guide plate 20 are attached seamlessly, the display surface 11 is free of dust and impurities, and the display effect of the display screen assembly 100 can be enhanced.
Further, the display screen assembly 100 further includes a light source drive board 50 (for example, a strip-shaped light source drive board). The light source drive board 50 can be deemed as part of the lighting assembly. For instance, the light source drive board 50 is a stripe light source drive board. The light source drive board 50 is adjacent to the outer edge of the light guide plate 20. The light source 20 a includes multiple LED lamp beads (not illustrated in the figures). The multiple LED lamp beads are provided on the light source drive board 50 and are arranged along the longitudinal direction of the light guide plate 20. The multiple LED lamp beads are configured to emit light towards the light guide plate 20. Specifically, the light source drive board 50 is provided with a drive circuit. When the display screen assembly 100 is applied to a terminal device, the light source drive board 50 can be electrically connected with the control assembly and obtain a current signal via the control assembly so as to drive the light source 20 a to emit light. In this implementation, the light source drive board 50 is adjacent to the outer side surface 23 of the light guide plate 20. The multiple LED lamp beads are bonded to one side of the light source drive board 50 that close to the light guide plate 20. The light from the multiple LED lamp beads passes through the outer side surface 23 and is diffused through the light guide plate 20 so as to be emitted from the top surface 22. In other implementations, the edge of the light guide plate 20 may be exposed to the display surface 11, and the light source drive board 50 is adjacent to the bottom surface 21 that is exposed to the display screen 10. The light of the light source 20 a passes through the bottom surface 21 and is emitted from the top surface 22.
Further, the edge of a surface on one side of the cover plate 40 that remote from the touch panel 30 is arc-shaped. The cover plate 40 includes an outer surface 40 a provided opposite to the inner surface 40 b. The edge of the outer surface 40 a is curved in a circular arc. As one implementation, the edge of the outer surface 40 a includes an arc-shaped surface 40 c curved in a circular arc. The front projection area of the arc-shaped surface 40 c at the inner surface 40 b corresponds to the non-display region 112 of the display screen 10. Thus, by using the arc-shaped surface 40 c, the refraction angle of the light passing through the cover plate 40 of the ink layer 42 a can be changed, and it can be observed through the cover plate 40 that the ink layer 42 a is narrowing, such that the display surface 11 of the display screen assembly 100 is visually larger.
The present disclosure further provides a terminal front cover 200. FIG. 3 is a schematic view of the terminal front cover 200 and FIG. 4 is a cross-sectional view of the terminal front cover 200. The terminal front cover 200 includes a display screen assembly 100. The terminal front cover 200 further includes a frame 60. The frame 60 is fixed to the edge of the cover plate 40.
In this implementation, the frame 60 can be made of plastic. The thickness of the frame 60 can be thinner so as not to affect the effective display region of the display region 111 of the display screen assembly 100. The frame 60 can stabilize the display screen assembly 100. When the display screen 10 is a touch display screen, the frame 60 can also be a weak polar material. In addition to show good insulation effect, the frame 60 can also play a role in the transmission of fingerprint induced electric field. The frame 60 includes an inner side surface 61. The outer side wall 43 of the cover plate 40 is fixed to the inner side surface 61.
As an implementation, the cover plate 40 can be integrally formed with the frame 60. As an implementation, a glass raw material member of the cover plate 40 is molded by press roll molding, and the cover plate 40 is obtained by a cutting process. The cover plate 40 is placed in a mold cavity of an injection mold, and then an injection molding process is carried out so that the frame 60 is integrally molded on the cover plate 40, such that the outer side wall 43 is better fitted to the inner side surface 61. The outer surface 40 a of the cover plate 40 and the exterior surface of the frame 60 are in the same mold cavity, and the outer surface 40 a and the exterior surface of the frame 60 can form a smooth surface while the frame 60 and the cover plate 40 are more stable in structure. In other implementations, if the frame 60 is made of a metal material, it is also possible to place the cover plate 40 in a mold cavity of a molding mold and inject liquid metal into the molding mold so that the frame 60 is integrally formed with the cover plate 40.
Further, the inner side of the frame 60 is provided with a groove 62. The light source 20 a is configured to be accommodated in the groove 62. As one implementation, the groove 62 is arranged on an inner side surface 61. The light source drive board 50 and the light source 20 a are fixed in the groove 62. The side wall of the groove 62 prevents the light of the light source 20 a from being irradiated toward the frame 60 as well as the gap between the frame 60 and the cover plate 40, such that the groove 62 can prevent the light source 20 a from leaking and thereby improve the performance of the display screen assembly 100. In the present implementation, the light source drive board 50 is engaged with the side wall of the groove 62. In other implementations, the light source drive board 50 may also be bonded to the side wall of the groove 62.
In the present disclosure, according to another implementation, there is provided a terminal 300. FIG. 5 is a cross-sectional view of the terminal 300 according to an implementation of the present disclosure. As illustrated in FIG. 5, the terminal 300 includes the terminal front cover 200 as illustrated in FIG. 3 or FIG. 4. Further, as illustrated in FIG. 5, the terminal 300 further includes a rear cover 70 and a control assembly 80. The rear cover 70 is provided with a receiving chamber 71, the open end of which is situated on the outer surface of the rear cover 70. The terminal front cover 200 covers the open end, and the display screen 10 and the control assembly 80 are received in the receiving chamber 71. The control assembly 80 electrically connects the display screen 10 and the light source drive board 50 so as to control the display screen 10 and the light source 20 a. It is to be understood that the terminal 300 is a terminal device, which may be one of a mobile phone, a notebook computer, a tablet computer, an electronic reader, an electronic album, a display and the like.
Unless otherwise indicated, various features described in the implementations of the present disclosure may be combined or replaced with each other. For example, details of the elements described in the implementations of the display screen assembly 100 can be equally applicable to the implementations of the terminal front cover 200 and the terminal 300 of the present disclosure.
In the display screen assembly and the terminal, the light guide plate is configured to cover the non-display region correspondingly, and the light source is used to illuminate the light guide plate. Besides, the light shielding band is configured to include the keypad region and the shielding region disposed around the keypad region. The keypad region is configured to pass through the light of the light guide plate and is provided corresponding to the virtual key of the touch panel. The shielding region is configured to shield the light of the light guide plate. In this way, the non-display region of the display screen can be utilized and therefore the display region of the display screen assembly can be increased effectively and is ergonomic.
In the description of the present disclosure, the term “one implementation”, “some implementations”, “illustrative implementation”, “example”, “specific example”, or “some example” and the like means that a particular feature, structure, material, or characteristic described in connection with the implementation or example is included in at least one implementation or example of the present disclosure. In the present specification, the schematic expression of the above-mentioned terminology does not necessarily refer to the same implementation or example. Moreover, the particular feature, structure, material, or feature described may be combined in any implementation or example in any suitable manner.
While the present disclosure has been described in detail above with reference to the example implementations, the scope of the present disclosure is not limited thereto. As will occur to those skilled in the art, the present disclosure is susceptible to various modifications and changes without departing from the spirit and principle of the present disclosure. Therefore, the scope of the present disclosure should be determined by the scope of the claims.

Claims

What is claimed is:

1. A display screen assembly, comprising a display screen, a light guide plate, a touch panel, and a cover plate that are sequentially stacked, wherein:

the display screen comprises a display surface having a display region and a non-display region, the non-display region surrounds the display region, wherein the light guide plate covers the non-display region correspondingly;

the light guide plate has a light source disposed on an outer edge of the light guide plate and the light source is configured to illuminate the light guide plate;

the touch panel covers the light guide plate, wherein the touch panel is provided with virtual keys; and

the cover plate comprises a light transmission window and a light shielding band surrounding the circumference of the light transmission window, wherein

the light of the display region is configured to transmit through the light transmission window,

the light shielding band comprises a keypad region and a shielding region disposed around the keypad region,

the light of the light guide plate is configured to transmit through the keypad region,

the keypad region is disposed corresponding to the virtual keys,

the shielding region is configured to obscure the light of the light guide plate.

2. The display screen assembly of claim 1, wherein the cover plate comprises an inner surface adjacent to the touch panel, and the inner surface has an ink layer disposed at a location corresponding to the shielding region of the light shielding band.

3. The display screen assembly of claim 2, wherein the keypad region is provided with key pattern codes which identify the virtual keys.

4. The display screen assembly of claim 3, wherein the light guide plate and the display screen are provided with an optical adhesive layer disposed there-between.

5. The display screen assembly of claim 1, wherein the display screen assembly further comprises a strip-shaped light source drive board adjacent to the outer edge of the light guide plate, the light source comprises a plurality of LED lamp beads disposed on the strip-shaped light source drive board and arranged along a longitudinal direction of the light guide plate, and the LED lamp beads are configured to emit light toward the light guide plate.

6. The display screen assembly of claim 2, wherein the cover plate comprises an outer surface provided opposite to the inner surface, and an edge of the outer surface is curved in a circular arc.

7. A front cover for a terminal, comprising the display screen assembly of claim 1 and a frame fixed on a peripheral edge of the cover plate.

8. The front cover of claim 7, wherein the cover plate and the frame are integrally molded.

9. The front cover of claim 7, wherein an inner side of the frame is provided with a groove, and the groove is configured to accommodate the light source.

10. The front cover of claim 7, wherein the cover plate comprises an inner surface adjacent to the touch panel, and the inner surface has an ink layer disposed at a location corresponding to the shielding region of the light shielding band.

11. The front cover of claim 10, wherein the keypad region is provided with key pattern codes which identify the virtual keys.

12. The front cover of claim 11, wherein the light guide plate and the display screen are provided with an optical adhesive layer disposed there-between.

13. The front cover of claim 10, wherein the cover plate comprises an outer surface provided opposite to the inner surface, and an edge of the outer surface is curved in a circular arc.

14. The front cover of claim 7, wherein the display screen assembly further comprises a strip-shaped light source drive board adjacent to the outer edge of the light guide plate, the light source comprises a plurality of LED lamp beads disposed on the strip-shaped light source drive board and arranged along a longitudinal direction of the light guide plate, and the LED lamp beads are configured to emit light toward the light guide plate.

15. A terminal, comprising the front cover of claim 7, a rear cover, and a control assembly, wherein

the rear cover is provided with a receiving chamber,

the receiving chamber has an open end situated on an outer surface of the rear cover,

the front cover covers the open end,

the display screen and the control assembly are received in the receiving chamber, and

the control assembly is electrically coupled to the display screen to control the display screen.

16. The terminal of claim 15, wherein the cover plate and the frame are integrally molded.

17. The terminal of claim 15, wherein an inner side of the frame is provided with a groove, and the groove is configured to accommodate the light source.

18. The terminal of claim 15, wherein the cover plate comprises an inner surface adjacent to the touch panel, and the inner surface has an ink layer disposed at a location corresponding to the shielding region of the light shielding band.

19. The terminal of claim 18, wherein the keypad region is provided with key pattern codes which identify the virtual keys.

20. The terminal of claim 19, wherein the light guide plate and the display screen is provided with an optical adhesive layer disposed there-between.