CN108089386B - Cover plate, display module and mobile terminal - Google Patents
Cover plate, display module and mobile terminal Download PDFInfo
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- CN108089386B CN108089386B CN201711488908.1A CN201711488908A CN108089386B CN 108089386 B CN108089386 B CN 108089386B CN 201711488908 A CN201711488908 A CN 201711488908A CN 108089386 B CN108089386 B CN 108089386B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect
- G02F1/153—Constructional details
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/15—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on an electrochromic effect
- G02F1/153—Constructional details
- G02F1/157—Structural association of cells with optical devices, e.g. reflectors or illuminating devices
Abstract
The application relates to a cover plate, a display module and a mobile terminal, wherein the cover plate is used for covering the display screen. The cover plate comprises a substrate and an electroluminescent ink layer. The substrate is transparent and has a first surface facing the display screen and a second surface facing away from the display screen. The electroluminescent ink layer is arranged on the first surface, the inner edge of the electroluminescent ink layer defines a window area of the substrate, the orthographic projection of the electroluminescent ink layer on the display screen shields all non-display areas of the display screen, and the electroluminescent ink layer can emit light when being electrified. When the display screen is lightened, the non-display area is shielded by the electroluminescent ink layer, and the black edge in the window area becomes invisible, so that the display effect of the display screen can be beautified. The electroluminescent ink layer can emit light when being electrified, and the electroluminescent ink layer can also emit light with different colors, so that a good decorative effect can be achieved on the appearance of the mobile terminal.
Description
Technical Field
The application relates to the technical field of mobile terminals, in particular to a cover plate, a display module and a mobile terminal.
Background
A display screen of a mobile terminal (a mobile phone, a tablet, etc.) generally includes a display area and a non-display area. When the display screen is lighted, the black non-display area can be observed through the cover plate, so that the display screen has a black edge phenomenon, and the black edge has adverse effect on the appearance of the mobile terminal.
Disclosure of Invention
The embodiment of the application provides a apron, display module assembly and mobile terminal to the black limit of solving the display screen produces adverse effect's problem to the mobile terminal outward appearance.
A cover plate for covering a display screen, the cover plate comprising:
a substrate which is transparent; the substrate is provided with a first surface facing the display screen and a second surface facing away from the display screen; and
the electroluminescent ink layer is arranged on the first surface, the inner edge of the electroluminescent ink layer defines a window area of the substrate, and the orthographic projection of the electroluminescent ink layer on the display screen shields all non-display areas of the display screen; the electroluminescent ink layer is capable of emitting light when energized.
In one embodiment, the electroluminescent ink layer comprises a first single layer and a second single layer, the first single layer is arranged on the first surface, the inner edge of the first single layer defines the window area, and the orthographic projection of the first single layer on the display screen blocks all the non-display area; the second single layer is arranged on one side, facing the display screen, of the first single layer; the first monolayer is capable of emitting light of a first color when energized and the second monolayer is capable of emitting light of a second color when energized.
In one embodiment, an orthographic projection of the inner edge of the electroluminescent ink layer on the display screen is located within a display area of the display screen, and a distance between the orthographic projection of the inner edge of the electroluminescent ink layer on the display screen and the edge of the display area is less than 0.15 mm.
In one embodiment, the cover plate further includes a reflective layer disposed at an outer periphery of the window area, the reflective layer is connected to the electroluminescent ink layer, and the reflective layer is configured to prevent light emitted from the display screen from passing through the electroluminescent ink layer.
In one embodiment, an orthographic projection of the inner edge of the reflective layer on the display screen coincides with an edge of a display area of the display screen.
In one embodiment, the reflecting layer is a silver reflecting layer, the reflecting layer is provided with a reflecting surface, the reflecting surface is a plane, the reflecting surface faces the display area of the display screen, and an included angle between the reflecting surface and the display screen is an acute angle.
In one embodiment, the cover plate further comprises a light shielding member, the light shielding member is arranged on one side of the electroluminescent ink layer facing the display screen, and the light shielding member is positioned at the periphery of the window area; the light shading piece is used for preventing light rays emitted by the electroluminescent ink layer from being incident to a display area of the display screen.
In one embodiment, an orthographic projection of an inner edge of the light shield on the display screen coincides with an orthographic projection of an inner edge of the electroluminescent ink layer on the display screen.
The display module comprises a display screen and the cover plate, wherein the cover plate is arranged on the display screen.
The utility model provides a mobile terminal, includes the backshell and above the display module assembly, the display screen at least part accept in the backshell, just the apron with backshell fixed connection.
In one embodiment, the rear shell comprises a body and a boss, the body and the boss are integrally formed, and the cover plate is connected to the body; the body is provided with a butting surface, and the maximum distance between the tail end of the boss and the butting surface is smaller than the maximum distance between the second surface and the butting surface.
Above-mentioned apron, display module assembly and mobile terminal are equipped with electroluminescent printing ink layer on the first surface of the base plate of apron, and the orthographic projection of electroluminescent printing ink layer on the display screen shelters from the whole non-display area of display screen, and when the display screen was lighted, non-display area was sheltered from by electroluminescent printing ink layer, and the black border in the window district just becomes invisible, therefore can beautify the display effect of display screen. The electroluminescent ink layer can be in communication connection with a microprocessor of the mobile terminal and also can be in communication connection with an independent control module arranged inside the mobile terminal, the electroluminescent ink layer can emit light when being electrified, and the electroluminescent ink layer can also emit light with different colors, so that the electrification and the power failure of the electroluminescent ink layer can be controlled by the microprocessor or the control module, and a better decorative effect is further achieved on the appearance of the mobile terminal.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a perspective view of a mobile terminal in one embodiment;
FIG. 2 is a front view of the mobile terminal shown in FIG. 1;
FIG. 3 is a cross-sectional view taken along A-A of one embodiment of the mobile terminal shown in FIG. 2;
FIG. 4 is a cross-sectional view of a display module in an embodiment of the mobile terminal shown in FIG. 3;
FIG. 5 is a cross-sectional view of a display module in another embodiment of the mobile terminal shown in FIG. 3;
FIG. 6 is a cross-sectional view taken along A-A of another embodiment of the mobile terminal shown in FIG. 2;
fig. 7 is a cross-sectional view of a display module of the mobile terminal shown in fig. 6;
FIG. 8 is a cross-sectional view taken along A-A of yet another embodiment of the mobile terminal shown in FIG. 2;
FIG. 9 is a cross-sectional view of a display module in an embodiment of the mobile terminal shown in FIG. 8;
FIG. 10 is a cross-sectional view of a display module in another embodiment of the mobile terminal shown in FIG. 8;
FIG. 11 is a cross-sectional view of a display module in another embodiment of the mobile terminal shown in FIG. 8;
FIG. 12 is a cross-sectional view of a display module in another embodiment of the mobile terminal shown in FIG. 3;
fig. 13 is a cross-sectional view of a display module in another embodiment of the mobile terminal shown in fig. 3.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As used herein, a "mobile terminal" (or simply "terminal") includes, but is not limited to, a device that is configured to receive/transmit communication signals via a wireline connection, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection, and/or another data connection/network, and/or via a wireless interface (e.g., for a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and/or another communication terminal). Mobile terminals that are arranged to communicate over a wireless interface may be referred to as "wireless mobile terminals", "wireless terminals", and/or "communication terminals". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; a Personal Communications System (PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver.
Referring to fig. 1 and 2, in an embodiment, the mobile terminal 10 is a mobile phone, the mobile terminal 10 includes a display module 100 and a rear case 200, and the display module 100 is fixedly connected to the rear case 200. Referring to fig. 3 and 4, in an embodiment, the display module 100 includes a cover plate 110 and a display screen 120, the cover plate 110 covers the display screen 120, the display screen 120 is at least partially accommodated in the rear case 200, and the cover plate 110 is fixedly connected to the rear case 200. In one embodiment, the display screen 120 includes a display area 121 and a non-display area 123(BM area, Black Matrix), and the display area 121 may be used to display information and may provide an interactive interface for a user. In one embodiment, the Display screen 120 is a Liquid Crystal Display (LCD) screen for displaying information, and the LCD screen may be a Thin Film Transistor (TFT) screen, an In-Plane Switching (IPS) screen, or a Liquid Crystal Display (SLCD) screen. In other embodiments, the mobile terminal 10 may be a tablet or the like.
In one embodiment, the cover plate 110 includes a substrate 111 and an electroluminescent ink layer 113. The substrate 111 is transparent, the substrate 111 is substantially rectangular, the substrate 111 may be made of glass or sapphire, and the substrate 111 has good light transmittance. In one embodiment, the substrate 111 has a first surface 1111 facing the display 120 and a second surface 1113 facing away from the display 120, and the electroluminescent ink layer 113 is disposed on the first surface 1111. The inner edge of the electroluminescent ink layer 113 defines the window area 300 of the substrate 111, and the orthographic projection of the electroluminescent ink layer 113 on the display screen 120 blocks all the non-display area 123 of the display screen 120, and the electroluminescent ink layer 113 can emit light when energized. In one embodiment, the electroluminescent ink layer 113 includes a binder and electroluminescent particles, the electroluminescent particles emit light when a current passes through the electroluminescent particles, and other components may be added to the binder to reduce the transparency of the electroluminescent ink layer 113, so as to provide a better shielding effect for the non-display area 123. In one embodiment, the window area 300 defined by the electroluminescent ink layer 113 fits within the display area 121 of the display screen 120. It will be appreciated that the adaptation of the window area 300 to the display area 121 means that the orthographic projection of the window area 300 on the display screen 120 coincides with the display area 121. It is to be understood that minor deviations due to process errors are also to be understood as belonging to the overlapping cases referred to in this application. For example, when the ratio of the distance between the orthographic projection of the edge of the window area 300 on the display screen 120 and the edge of the display area 121 to the width of the display area 121 is less than 1%, it can be considered that the orthographic projection of the window area 300 on the display screen 120 coincides with the display area 121.
Referring to fig. 3 and 4, in an embodiment, the orthographic projection of the inner edge of the electroluminescent ink layer 113 on the display screen 120 is located within the display area 121 of the display screen 120, and the distance between the orthographic projection of the inner edge of the electroluminescent ink layer 113 on the display screen 120 and the edge of the display area 121 is less than 0.15 mm. That is, when the electroluminescent ink layer 113 is printed, the area of the window area 300 may be smaller than the area of the display area 121 of the display screen 120, and the distance between the inner edge of the electroluminescent ink layer 113 and the edge of the display area 121 may be less than 0.15 mm. Through the above arrangement, the non-display area 123 of the display screen 120 can be prevented from being exposed from the window area 300 due to the installation dislocation of the cover plate 110 and the display screen 120, so that the non-display area 123 of the display screen 120 can be effectively hidden, and the display effect of the mobile terminal can be beautified. It is understood that, for the pixel points where the display area 121 is blocked, a software control method may be adopted to make the pixels not emit light, so as to prevent the display of the display screen 120 from being adversely affected. Further, in one embodiment, the orthographic projection of the inner edge of the electroluminescent ink layer 113 on the display screen 120 coincides with the edge of the display area 121 of the display screen 120, i.e., the window area 300 of the cover plate 110 can be aligned with the display area 121 of the display screen 120. Since the orthographic projection of the inner edge of electroluminescent ink layer 113 on display screen 120 coincides with the edge of display area 121, all pixels of display area 121 are available for display when display screen 120 is lit.
In the cover plate 110, the first surface 1111 of the substrate 111 of the cover plate 110 is provided with the electroluminescent ink layer 113, the orthographic projection of the electroluminescent ink layer 113 on the display screen 120 shields all the non-display area 123 of the display screen 120, when the display screen 120 is lighted, the non-display area 123 is shielded by the electroluminescent ink layer 113, and the black edge in the window area 300 becomes invisible, so that the display effect of the display screen 120 can be beautified. The electroluminescent ink layer 113 can be in communication connection with a microprocessor of the mobile terminal 10, or in communication connection with an independent control module arranged inside the mobile terminal 10, the electroluminescent ink layer 113 can emit light when being powered on, and the electroluminescent ink layer 113 can also emit light with different colors, so that the power on and off of the electroluminescent ink layer 113 can be controlled by the microprocessor or the control module, and a better decorative effect is further achieved on the appearance of the mobile terminal 10.
In one embodiment, the rear case 200 is a metal material such as an aluminum alloy. Referring to fig. 3, in an embodiment, the rear case 200 includes a body 210 and a boss 220, the body 210 and the boss 220 are integrally formed, the cover plate 110 is disposed on the body 210 and fixedly connected to the body 210, the boss 220 is located at an edge of the substrate 111, the boss 220 forms a half-wrapped structure for the edge of the substrate 111, and the boss 220 can protect the edge of the substrate 111 well. Further, in an embodiment, the body 210 has a supporting surface 211, the supporting surface 211 is a plane, the supporting surface 211 is provided with the dispensing layer 400, and the cover plate 110 is fixedly connected to the body 210 through the dispensing layer 400. The dispensing method is not only beneficial to the fixed connection between the cover plate 110 and the rear case 200, but also can prevent the frame of the rear case 200 from being too wide, thereby being beneficial to obtaining the effect of a narrow frame and further being beneficial to beautifying the appearance of the mobile terminal 10. In an embodiment, the maximum distance between the end of the boss 220 and the abutting surface 211 is smaller than the maximum distance between the second surface 1113 and the abutting surface 211. Specifically, referring to fig. 3, the maximum distance between the second surface 1113 of the substrate 111 and the abutting surface 211 is H, and the maximum distance between the end of the boss 220 and the abutting surface 211 is H, then H > H. With the above structure, the boss 220 of the rear case 200 can protect the substrate 111 and the electroluminescent ink layer 113 of the cover plate 110 well, and the mobile terminal 10 can obtain a better appearance. In other embodiments, the rear housing 200 may be made of ceramic, glass, or plastic.
Referring to fig. 5, in an embodiment, the el ink layer 113 includes a first monolayer 1131 and a second monolayer 1133, the first monolayer 1131 is disposed on the first surface 1111, an inner edge of the first monolayer 1131 defines the window area 300, and an orthographic projection of the first monolayer 1131 on the display screen 120 blocks all of the non-display area 123. The second single layer 1133 is disposed on a side of the first single layer 1131 facing the display screen 120, the first single layer 1131 is capable of emitting light of a first color when energized, and the second single layer 1133 is capable of emitting light of a second color when energized. Specifically, in one embodiment, the electroluminescent ink layer 113 is printed on the first surface 1111 of the substrate 111 by printing. During printing, the first monolayer 1131 is printed first, followed by the second monolayer 1133. In one embodiment, the first monolayer 1131 has a transparency higher than that of the second monolayer 1133, and the second monolayer 1133 has a lower transparency, so that the non-display area 123 can be better shielded. The above arrangement not only can hide the non-display area 123, but also can enable the light emitted from the second single layer 1133 to be observed by the user through the first single layer 1131, so as to enhance the decoration effect of the mobile terminal 10.
In one embodiment, the first monolayer 1131 has a width greater than the width of the second monolayer 1133, i.e., the second monolayer 1133 is printed such that the inner edge of the second monolayer 1133 is offset away from the center of the window area 300. Further, in an embodiment, an orthographic projection of an inner edge of the first monolayer 1131 on the display screen 120 is spaced from an orthographic projection of an inner edge of the second monolayer 1133 on the display screen 120 by less than 0.15 millimeters. This arrangement facilitates the processing of the second monolayer 1133 and prevents the inner edge of the second monolayer 1133 from extending beyond the inner edge of the first monolayer 1131 during printing to avoid the second monolayer 1133 from adversely affecting the appearance of the display 120. It is understood that the first monolayer 1131 may be multiple layers, and the second monolayer 1133 may also be multiple layers.
In one embodiment, the first monolayer 1131 is capable of emitting light of a first color when energized, and the second monolayer 1133 is capable of emitting light of a second color when energized. Specifically, in one embodiment, the first color is light green and the second color is light blue. First monolayer 1131 and second monolayer 1133 can be energized, respectively, to cause electroluminescent ink layer 113 to emit light of only one color. In other embodiments, the first monolayer 1131 and the second monolayer 1133 can also be energized simultaneously to cause the electroluminescent ink layer 113 to emit light of a mixed color. Further, in other embodiments, the first single layer 1131 may be configured to emit light of multiple colors. In an embodiment, the distribution of the electroluminescent ink layer 113 on the first surface 1111 may be controlled to enable the electroluminescent ink layer 113 to display a pattern, so as to further enhance the decorative effect of the display screen 120.
In one embodiment, the substrate 111 is a flat glass, which is low in processing cost, and the flat substrate 111 facilitates processing of the electroluminescent ink layer 113. Referring to fig. 6 and 7, in another embodiment, the substrate 111 may be a curved glass, such as a 2.5D glass or a 3D glass. By arranging the electroluminescent ink layer 113 on the side of the curved glass facing the display screen 120, not only can the black edges around the display screen 120 be effectively shielded, but also the mobile terminal 10 can obtain a better appearance.
Referring to fig. 8 and 9, in an embodiment, the cover plate 110 may further include a reflective layer 115, the reflective layer 115 is disposed at an outer periphery of the window area 300, the reflective layer 115 is connected to the el ink layer 113, and the reflective layer 115 is used to prevent light emitted from the display screen 120 from transmitting through the el ink layer 113. In one embodiment, the reflective layer 115 is a silver reflective layer. Specifically, in an embodiment, the reflective layer 115 includes a plurality of silver atomic layers, the reflective layer 115 has a high reflectivity, light emitted from the display area 121 to the reflective layer 115 is specularly reflected on the reflective layer 115, and the part of light is reflected toward the display area 121 or the window area 300 without passing through the electroluminescent ink layer 113, so that a bright edge phenomenon can be prevented from occurring at an inner edge of the electroluminescent ink layer 113 close to the display area 121. The reflective layer 115 can also prevent the light emitted from the electroluminescent ink layer 113 from irradiating the display area 121 of the display screen 120, so as to prevent the light emitted from the electroluminescent ink layer 113 from adversely affecting the display of the display screen 120. It is to be understood that the thickness of the reflective layer 115 may be made extremely thin, for example, when the reflective layer 115 is a silver reflective layer 115, the thickness of the reflective layer 115 is almost invisible visually. It is understood that other high reflectivity materials may be used for the reflective layer 115. It is understood that the reflective layer 115 is not necessary, for example, the region of the electroluminescent ink layer 113 near the window area 300 can be made non-luminous, and the transparency of the region is made lower, so as to prevent the light emitted from the electroluminescent ink layer 113 from entering the display area 121, and prevent the light emitted from the display area 121 from passing through the electroluminescent ink layer 113.
In an embodiment, the orthographic projection of the inner edge of the reflective layer 115 on the display screen 120 is located within the display area 121, and the reflective layer 115 may block a portion of the pixels in the display area 121, and the blocked portion of the pixels may not be needed for displaying. The above arrangement can ensure the reflection effect of the reflective layer 115 on the edge of the display area 121, and prevent the non-display area 123 from being exposed to generate a black edge due to the installation error of the cover plate 110. In another embodiment, the orthographic projection of the inner edge of the reflective layer 115 on the display screen 120 coincides with the edge of the display area 121, thereby ensuring that the display area 121 of the display screen 120 is fully utilized.
Referring to fig. 10, in an embodiment, the reflective layer 115 may have a step shape, that is, the reflective layer 115 extends from the display area 121 to the non-display area 123 and has a step shape. The reflective layer 115 has a reflective surface 116, the reflective surface 116 may be planar, and the reflective surface 116 may be perpendicular or parallel to the display screen 120. In the embodiment shown in fig. 10, the reflective surface 116 includes a first reflective surface 1161, a second reflective surface 1163, and a third reflective surface 1165, the first reflective surface 1161 and the third reflective surface 1165 are perpendicular to the display screen 120, and the second reflective surface 1163 is parallel to the display screen 120. The light emitted from the display area 121 to the reflective layer 115 is specularly reflected on the first reflective surface 1161, the second reflective surface 1163 and the third reflective surface 1165, and the light does not pass through the electroluminescent ink layer 113, so that the bright edge phenomenon at the inner edge of the electroluminescent ink layer 113 can be prevented. It is understood that the first and second reflective surfaces 1161, 1163 are not necessarily perpendicular to the display screen 120, nor is it necessarily required that the second reflective surface 1163 be parallel to the display screen 120.
Further, referring to fig. 11, in an embodiment, the reflective surface 116 of the reflective layer 115 is a plane, the reflective surface 116 is disposed obliquely toward the display area 121, and an included angle between the reflective surface 116 and the display screen 120 is an acute angle. The reflecting surface 116 has a simple structure and is easy to process. The reflective layer 115 is used for preventing light emitted from the display screen 120 from passing through the electroluminescent ink layer 113, so that a bright edge phenomenon can be prevented from occurring at the inner edge of the electroluminescent ink layer 113 close to the display area 121, and on the basis, the reflective surface 116 of the reflective layer 115 can be deformed in various ways, which is not described herein again.
Referring to fig. 12 and 13, in an embodiment, the cover plate 110 may further include a light shielding member 117, the light shielding member 117 is disposed on a side of the electroluminescent ink layer 113 facing the display screen 120, and the light shielding member 117 is located at an outer periphery of the window area 300. The light-shielding member 117 is used to prevent light emitted from the electroluminescent ink layer 113 from being incident on the display area 121 of the display screen 120. Specifically, in an embodiment, the light shielding member 117 is made of plastic, and the light shielding member 117 has a low light transmittance and can prevent light from passing through. Referring to fig. 12, in one embodiment, the orthographic projection of the inner edge of the light shield 117 on the display screen 120 is within the orthographic projection of the electroluminescent ink layer 113 on the display screen 120. Further, referring to fig. 13, in one embodiment, the orthographic projection of the inner edge of the light shield 117 on the display screen 120 coincides with the orthographic projection of the inner edge of the electroluminescent ink layer 113 on the display screen 120. In other embodiments, the light blocking member 117 may be made of rubber, metal, or the like. When the electroluminescent ink layer 113 is energized to emit light, the light shielding member 117 can prevent light emitted from the electroluminescent ink layer 113 from being incident on the display area 121 of the display screen 120, so as to prevent the light emitted from the electroluminescent ink layer 113 from adversely affecting the display of the display screen 120. In an embodiment, an adhesive layer (not shown) may be disposed on a surface of the light shielding member 117 facing the substrate 111, and the electroluminescent ink layer 113 is fixedly connected to the light shielding member 117 through the adhesive layer. It is understood that the light shielding member 117 is not necessary, for example, the transparency of the portion of the electroluminescent ink layer 113 near the non-display area 123 may be made lower, so as to prevent the light emitted from the electroluminescent ink layer 113 from entering the display area 121, and the electroluminescent ink layer 113 may also have a better shielding effect on the non-display area 123.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (11)
1. A cover plate for covering a display screen, the cover plate comprising:
a substrate which is transparent; the substrate is provided with a first surface facing the display screen and a second surface facing away from the display screen; and
the electroluminescent ink layer is arranged on the first surface, the inner edge of the electroluminescent ink layer defines a window area of the substrate, and the orthographic projection of the electroluminescent ink layer on the display screen shields all non-display areas of the display screen; the electroluminescent ink layer can emit light when electrified;
the electroluminescent ink layer comprises a first single layer and a second single layer which can be independently controlled respectively, the first single layer is arranged on the first surface, the inner edge of the first single layer defines the window area, and the orthographic projection of the first single layer on the display screen shields all the non-display areas; the second single layer is arranged on one side, facing the display screen, of the first single layer; the first monolayer is capable of emitting light of a first color when energized and the second monolayer is capable of emitting light of a second color when energized; the first monolayer has a transparency that is higher than the transparency of the second monolayer such that light emitted by the second monolayer is transmitted through the first monolayer and is observed by a user; the transparency of the inner edge region of the first monolayer is less than that of the light emitting region of the first monolayer, and the transparency of the inner edge region of the second monolayer is less than that of the light emitting region of the second monolayer.
2. The decking of claim 1, wherein the first monolayer has a width greater than a width of the second monolayer.
3. The cover sheet of claim 1 wherein an orthographic projection of the inner edge of the electroluminescent ink layer on the display screen is within a display area of the display screen, and wherein the orthographic projection of the inner edge of the electroluminescent ink layer on the display screen is spaced from an edge of the display area by less than 0.15 mm.
4. The cover sheet according to claim 1, further comprising a reflective layer disposed at the periphery of the window area, wherein the reflective layer is connected to the electroluminescent ink layer, and the reflective layer is configured to prevent light emitted from the display screen from passing through the electroluminescent ink layer.
5. The cover sheet of claim 4, wherein an orthographic projection of the inner edge of the reflective layer on the display screen coincides with an edge of a display area of the display screen.
6. The cover plate according to claim 4, wherein the reflective layer is a silver reflective layer, the reflective layer has a reflective surface, the reflective surface is a flat surface, the reflective surface faces the display area of the display screen, and an included angle between the reflective surface and the display screen is an acute angle.
7. The cover sheet according to claim 1, further comprising a light shielding member disposed on a side of the electroluminescent ink layer facing the display screen, wherein the light shielding member is located at a periphery of the window area; the light shading piece is used for preventing light rays emitted by the electroluminescent ink layer from being incident to a display area of the display screen.
8. The cover sheet of claim 7 wherein an orthographic projection of an inner edge of the shade on the display screen coincides with an orthographic projection of an inner edge of the electroluminescent ink layer on the display screen.
9. A display module is characterized by comprising a display screen and the cover plate of any one of claims 1 to 8, wherein the cover plate is arranged on the display screen in a covering mode.
10. A mobile terminal, comprising a rear housing and the display module of claim 9, wherein the display screen is at least partially accommodated in the rear housing, and the cover plate is fixedly connected to the rear housing.
11. The mobile terminal of claim 10, wherein the rear housing comprises a body and a boss, the body and the boss are integrally formed, and the cover is connected to the body; the body is provided with a butting surface, and the maximum distance between the tail end of the boss and the butting surface is smaller than the maximum distance between the second surface and the butting surface.
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| CN201711488908.1A CN108089386B (en) | 2017-12-29 | 2017-12-29 | Cover plate, display module and mobile terminal |
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| CN201711488908.1A CN108089386B (en) | 2017-12-29 | 2017-12-29 | Cover plate, display module and mobile terminal |
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| CN108089386B true CN108089386B (en) | 2021-02-02 |
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| CN110099149B (en) * | 2019-05-06 | 2021-05-04 | Oppo广东移动通信有限公司 | Panel assembly, display module and electronic device |
| CN110865741B (en) * | 2019-11-29 | 2023-10-24 | 上海天马微电子有限公司 | Touch display module and display device |
| CN110989240B (en) * | 2019-12-26 | 2022-10-28 | 上海天马微电子有限公司 | Display module, electronic equipment and preparation method of display module |
| CN111540731B (en) * | 2020-05-08 | 2022-01-11 | 深圳市双禹盛泰科技有限公司 | Luminous display screen with light source transition area |
| CN111816081B (en) * | 2020-08-05 | 2022-08-12 | Oppo广东移动通信有限公司 | Preparation method of display screen assembly, display screen assembly and electronic equipment |
| CN114979319B (en) * | 2021-02-24 | 2023-04-14 | Oppo广东移动通信有限公司 | Electronic equipment and shell assembly thereof |
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Address after: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Applicant after: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. Address before: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Applicant before: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. |
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