Patent Publication Number: US-2023137793-A1

Title: Display screen and display device

Description:
BACKGROUND 
     Field of Invention 
     The present disclosure relates to a field of display technology, and more particularly, to a display screen and a display device. 
     Description of the Prior Art 
     In an existing display screen  1 , as shown in  FIG.  1   , a black shielding layer  12  is disposed under a cover plate  11  to shield internal circuits of the existing display screen  1 . Further, a glue layer  14  is also disposed between the cover plate  11  and a display panel  13  to bond the cover plate  11  and the display panel  13 , preventing external water and oxygen from corroding internal components of the display screen  1 . 
     Wherein, a constituent material of the glue layer  14  is ultraviolet (UV) glue. The UV glue is cured under irradiation of light emitted by a UV lamp  15 . As shown in  FIG.  1   , if the UV lamp  15  is disposed on a side adjacent to the cover plate  11 , the black shielding layer  12  will block the light emitted by the UV lamp  15 . If the UV lamp  15  is disposed on a side adjacent to the display panel  13 , the display panel  13  also blocks the light emitted by the UV lamp  15 , which causes a curing performance to decrease. 
     Therefore, it is necessary to provide a display screen that can improve the curing performance. 
     SUMMARY 
     A purpose of the present disclosure is to provide a display screen and a display device, improving a curing performance of the display screen. 
     The present disclosure provides a display screen, including: a display panel, a cover plate, and a shielding layer disposed between the display panel and the cover plate, wherein the display screen further includes:
     a bonding layer disposed between the shielding layer and the display panel, including:
   a glue layer including:
   a first side, wherein the first side is a side of the glue layer adjacent to the display panel; and   a second side, wherein the second side is a side of the glue layer away from the display panel; and   
   a light guiding portion including: 
   a light incident side configured to input ultraviolet light; and   a light-emitting side configured to output the ultraviolet light to the first side of the glue layer, or to output the ultraviolet light to the second side of the glue layer;   
   
   wherein the light guiding portion is disposed between the display panel and the glue layer, and the light-emitting side of the light guiding portion is in contact with the first side of the glue layer; or   wherein the glue layer is disposed between the light guiding portion and the display panel, and the light-emitting side of the light guiding portion is in contact with the second side of the glue layer.   

     In an embodiment, the light guiding portion further includes a plurality of refraction portions, and the plurality of refraction portions are disposed on the light-emitting side of the light guiding portion. 
     The present disclosure further provides a display screen, including: a display panel, a cover plate, and a shielding layer disposed between the display panel and the cover plate, wherein the display screen further includes:
     a bonding layer disposed between the shielding layer and the display panel, including: 
   a glue layer including: 
   a first side, wherein the first side is a side of the glue layer adjacent to the display panel; and   a second side, wherein the second side is a side of the glue layer away from the display panel; and   
   a light guiding portion including: 
   a light incident side configured to input ultraviolet light; and   
   a light-emitting side configured to output the ultraviolet light to the first side of the glue layer, or to output the ultraviolet light to the second side of the glue layer.   
   

     In an embodiment, the light guiding portion is disposed between the display panel and the glue layer, and the light-emitting side of the light guiding portion is in contact with the first side of the glue layer. 
     In an embodiment, the glue layer is disposed between the light guiding portion and the display panel, and the light-emitting side of the light guiding portion is in contact with the second side of the glue layer. 
     In an embodiment, the light guiding portion further includes a plurality of refraction portions, and the plurality of refraction portions are disposed on the light-emitting side of the light guiding portion. 
     In an embodiment, the light-emitting side of the light guiding portion includes a first area defined by an area disposed opposite to the glue layer, and the plurality of refraction portions are disposed on the first area. 
     In an embodiment, the light guiding portion further includes a plurality of light-emitting holes defined between adjacent refraction portions of the plurality of refraction portions. 
     In an embodiment, light-emitting side of the light guiding portion further includes a second area defined by an area of the light-emitting side excluding the first area, and the light guiding portion further includes a reflector disposed on the second area. 
     In an embodiment, the light guiding portion further includes a reflection sheet disposed on a side of the light guiding portion opposite to the light incident side, and on a side of the light guiding portion opposite to the light-emitting side. 
     In an embodiment, the light guiding portion further includes a plurality of reflection portions disposed on a side of the light guiding portion opposite to the light-emitting side. 
     The present disclosure further provides a display device, including: a display screen including a display panel, a cover plate, and a shielding layer disposed between the display panel and the cover plate, wherein the display screen further includes:
     a bonding layer disposed between the shielding layer and the display panel, including: 
   a glue layer including: 
   a first side, wherein the first side is a side of the glue layer adjacent to the display panel; and   a second side, wherein the second side is a side of the glue layer away from the display panel; and   
   a light guiding portion including: 
   a light incident side configured to input ultraviolet light; and   
   a light-emitting side configured to output the ultraviolet light to the first side of the glue layer, or to output the ultraviolet light to the second side of the glue layer.   
   

     In an embodiment, the light guiding portion is disposed between the display panel and the glue layer, and the light-emitting side of the light guiding portion is in contact with the first side of the glue layer. 
     In an embodiment, the glue layer is disposed between the light guiding portion and the display panel, and the light-emitting side of the light guiding portion is in contact with the second side of the glue layer. 
     In an embodiment, the light guiding portion further includes a plurality of refraction portions, and the plurality of refraction portions are disposed on the light-emitting side of the light guiding portion. 
     In an embodiment, the light-emitting side of the light guiding portion includes a first area defined by an area disposed opposite to the glue layer, and the plurality of refraction portions are disposed on the first area. 
     In an embodiment, the light guiding portion further includes a plurality of light-emitting holes defined between adjacent refraction portions of the plurality of refraction portions. 
     In an embodiment, the light-emitting side of the light guiding portion further includes a second area defined by an area of the light-emitting side excluding the first area, and the light guiding portion further includes a reflector disposed on the second area. 
     In an embodiment, the light guiding portion further includes a reflection sheet disposed on a side of the light guiding portion opposite to the light incident side, and on a side of the light guiding portion opposite to the light-emitting side. 
     In an embodiment, the light guiding portion further includes a plurality of reflection portions disposed on the side of the light guiding portion opposite to the light-emitting side. 
     The display screen and the display device according to an embodiment of the present disclosure provide the light guiding portion to transmit the ultraviolet light to the glue layer, so that the glue layer can be cured under sufficient ultraviolet light irradiation, improving the curing performance of the display screen. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
       Technical solutions and other beneficial effects of the present disclosure will be obvious by describing the specific implementation of the present disclosure in detail with reference to the accompanying drawings. 
         FIG.  1    is a structural schematic diagram of an existing display screen. 
         FIG.  2    is a first structural schematic diagram of a display screen according to an embodiment of the present disclosure. 
         FIG.  3    is a second structural schematic diagram of the display screen according to an embodiment of the present disclosure. 
         FIG.  4    is a structural schematic diagram of a light guiding portion according to an embodiment of the present disclosure. 
     
    
    
     DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS 
     Embodiments of the present disclosure are described in detail with the technical matters, structural features, achieved objects, and effects with reference to the accompanying drawings as follows. It is clear that the described embodiments are part of embodiments of the present disclosure, but not all embodiments. Based on the embodiments of the present disclosure, all other embodiments to those of ordinary skill in the premise of no creative efforts obtained, should be considered within the scope of protection of the present disclosure. 
     In the description of the present disclosure, it should be understood that orientations or position relationships indicated by the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, and “counterclockwise” are based on orientations or position relationships illustrated in the drawings. The terms are used to facilitate and simplify the description of the present disclosure, rather than indicate or imply that the devices or elements referred to herein are required to have specific orientations or be constructed or operate in the specific orientations. Accordingly, the terms should not be construed as limiting the present disclosure. In addition, the term “first”, “second” are for illustrative purposes only and are not to be construed as indicating or imposing a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature that limited by “first”, “second” may expressly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of “plural” is two or more, unless otherwise specifically defined. 
     In the description of the present disclosure, it should be noted that unless otherwise clearly defined and limited, the terms “mounted”, “connected/coupled”, and “connection” should be interpreted broadly. For example, the terms may refer to a fixed connection, a detachable connection, or an integral connection; the terms may also refer to a mechanical connection, an electrical connection, or communication with each other; the terms may further refer to a direct connection, an indirect connection through an intermediary, or an interconnection between two elements or interactive relationship between two elements. Those skilled in the art can understand the specific meanings of the above-mentioned terms in the present disclosure according to circumstances. 
     In the present disclosure, it should he noted that unless otherwise clearly defined and limited, a first feature “on” or “under” a second feature may mean that the first feature directly contacts the second feature, or that the first feature contacts the second feature via an additional feature there between instead of directly contacting the second feature. Moreover, the first feature “on”, “above”, and “over” the second feature may mean that the first feature is right over or obliquely upward over the second feature or mean that the first feature has a horizontal height higher than that of the second feature. The first feature “under”, “below”, and “beneath” the second feature may mean that the first feature is right beneath or obliquely downward beneath the second feature or mean that that horizontal height of the first feature is lower than that of the second feature. 
     The following description provides various embodiments or examples for implementing various structures of the present disclosure. To simplify the description of the present disclosure, parts and settings of specific examples are described as follows. Certainly; they are only illustrative, and are not intended to limit the present disclosure. Further, reference numerals and reference letters may be repeated in different examples. This repetition is for purposes of simplicity and clarity and does not indicate a relationship of the various embodiments and/or the settings. Furthermore, the present disclosure provides specific examples of various processes and materials, however, applications of other processes and/or other materials may be appreciated those skilled in the art. 
     The present disclosure provides a display device. The display device includes a display screen. Please refer to  FIG.  2   ,  FIG.  2    is a structural schematic diagram of the display screen according to an embodiment of the present disclosure. As shown in  FIG.  2   , a display screen  2  includes a display panel  21  and a cover plate  22 . Wherein, the display panel  21  can be a liquid crystal display panel or an organic light-emitting panel, which is not specifically limited herein. The cover plate  22  can be made of high-hardness materials such as glass, sapphire, or ceramics, and has a good wear-resisting property to protect internal components in the display panel  21 . 
     In order to prevent components in the display panel  21  from being exposed on an appearance surface, a shielding layer  23  is disposed on a side of the cover plate  21  adjacent to the display panel  21 . Wherein, the shielding layer  23  can be made of a material with a low light transmittance, such as a material with a light transmittance less than 10%. Specifically, a constituent material of the shielding layer  23  can include black ink. 
     Furthermore, the display screen  2  further includes a bonding layer  24 . Wherein, the bonding layer  24  is disposed between the shielding layer  23  and the display panel  21 , and can fix the display panel  21  and the cover plate  22  together. 
     As shown in  FIG.  2   , the bonding layer  24  includes a glue layer  241 . Wherein a constituent material of the glue layer  241  includes UV glue. The glue layer  241  includes a first side  2411  and a second side  2412 . The first side  2411  is a side of the glue layer  241  adjacent to the display panel  21 . The second side  2412  is a side of the glue layer  241  away from the display panel  21 . As shown in  FIG.  2   , if the ultraviolet light enters from a side adjacent to the cover plate  22 , both the first side  2411  and the second side  2412  of the glue layer  241  are shielded by the shielding layer  23 . If the ultraviolet light enters from a side adjacent to the display panel  21 , the first side  2411  and the second side  2412  of the glue layer  241  are also shielded by opaque components such as thin-film transistors disposed in the display panel  21 . In this way, the glue layer  241  cannot receive enough ultraviolet light irradiation, causing a decrease of a curing performance of the glue layer  241 . 
     In an embodiment of the disclosure, the bonding layer  24  further includes a light guiding portion  242 . The light guiding portion  242  includes a light incident side  2421  and a light-emitting side  2422 . The light incident side  2421  is configured to input the ultraviolet light. The light-emitting side  2422  is configured to output the ultraviolet light to the first side  2411  or the second side  2412  of the glue layer  241 , making the glue layer  241  be cured under enough ultraviolet light irradiation. 
     In an embodiment, as shown in  FIG.  2   , the light guiding portion  242  is disposed between the display panel  21  and the glue layer  241 , and the light-emitting side  2422  of the light guiding portion  242  is in contact with the first side  2411  of the glue layer  241 . In this way, the light-emitting side  2422  of the light guiding portion  242  is configured to output the ultraviolet light to the first side  2411  of the glue layer  241 . 
     In an embodiment, as shown in  FIG.  3   , the glue layer  241  is disposed between the light guiding portion  242  and the display panel  21 . The light-emitting side  2422  of the light guiding portion  242  is in contact with the second side  2412  of the glue layer  241 . In this way, the light-emitting side  2422  of the light guiding portion  242  is configured to output the ultraviolet light to the second side  2412  of the glue layer  241 . 
     In an embodiment, as shown in  FIG.  4   , the light guiding portion  242  further includes a plurality of refraction portions  2424 . The plurality of refraction portions  2424  are disposed on the light-emitting side  2422  of the light guiding portion  242 . As shown in  FIG.  4   , a light emitted from a UV lamp  3  toward to the light-emitting side  2422  of the light guiding portion  242  is outputted by a refraction of the refraction portions  2424 . Wherein, a shape of the plurality of refraction portions  2424  may be a taper. 
     The light guiding portion  242  further includes a plurality of light-emitting holes  2423 . The plurality of light-emitting holes  2423  are defined on the light-emitting side  2422  of the light guiding portion  242 . Specifically, the light-emitting holes  2423  are defined between two adjacent refraction portions  2424 . The light-emitting holes  2423  can be configured to guide the ultraviolet light to emit to the first side  2422  or the second side  2412  of the glue layer  241 . 
     In an embodiment, the light-emitting side  2422  of the light guiding portion  242  includes a first area  24221  and a second area  24222 . Wherein, the first area  24221  is defined by an area disposed opposite to the glue layer  241 , and the second area  24222  is defined by an area of the light-emitting side  2422  excluding the first area  24221 . 
     The light-emitting holes  2423  and the refraction portions  2424  can be only defined on the first area  24221 , so as to prevent the ultraviolet light from escaping from the second area  24222 . In an embodiment, a reflector  2427  can also be disposed on the second area  24222 , and can reflect the ultraviolet light irradiated on the second area  24222  back into an inside of the light guiding portion  242  to improve a utilization rate. Wherein, the reflector  2427  can have a hemispherical shape. 
     Since the ultraviolet light in the light guiding portion  242  is reflected multiple times, the ultraviolet light can escape from a side of the light guiding portion  242  opposite to the light incident side  2421 , or from a side of the light guiding portion  242  opposite to the light-emitting side  2422 . Therefore, in an embodiment, a reflection sheet  2425  is also disposed in the light guiding portion  242 . Specifically, the reflection sheet  2425  is also disposed on the side of the light guiding portion  242  opposite to the light incident side  2421 , and on the side of the light guiding portion  242  opposite to the light-emitting side  2422 . That is, the reflection sheet  2425  can be disposed as an L-shaped shape. In this way, the reflection sheet  2425  can refract the ultraviolet light back to the light guiding portion  242  for multiple refraction, until the ultraviolet light is exported by the light-emitting holes  2423 . 
     In an embodiment, the light guiding portion  242  further includes a plurality of reflection portions  2426 . The plurality of reflection portions  2426  are disposed on the side of the light guiding portion  242  opposite to the light-emitting side  2422 , and can reflect the ultraviolet light irradiated on the side back into an inside of the light guiding portion  242  to improve a utilization rate. Wherein, the reflection portions  2426  can have a hemispherical shape. 
     The display screen and the display device according to an embodiment of the present disclosure provide the light guiding portion to transmit the ultraviolet light to the glue layer, so that the glue layer can be cured under sufficient ultraviolet light irradiation, improving the curing performance of the display screen. 
     In the foregoing embodiments, the description of each embodiment has its own emphasis. For the parts that are not described in detail in one embodiment, reference may be made to related descriptions in other embodiments. 
     The display screen and the display device provided by the embodiments of the present disclosure are described in detail. The principles and implementations of the present disclosure are described in combination with specific embodiments. The above description of the embodiments is merely for the purpose of understanding the disclosure. In the meantime, for those skilled in the art, there will be changes in the specific implementation and application scope according to the idea of the present disclosure. In conclusion, the content of the specification of the present disclosure should not be construed as limitations of the scope of the present disclosure.