DISPLAY PANEL AND DISPLAY DEVICE HAVING SAME

Provided is a display panel. The display panel includes: a cover plate, a screen film layer, and a buffer layer, wherein the buffer layer is arranged on a side, distal to the cover plate, of the screen film layer, and the buffer layer includes at least one buffer chamber.

TECHNICAL FIELD

The present disclosure relates to the technical field of display screens, and in particular, relates to a display panel and a display device having the same.

BACKGROUND OF THE INVENTION

The conventional flexible display device is poor in impact resistance. Under an impact force, the display panel of the flexible display device is easily deformed and damaged, such that the service life of the flexible display device is greatly shortened. In addition, damage of the flexible display device also causes property loss to users.

SUMMARY OF THE INVENTION

According to some embodiments of the present disclosure, a display panel with good impact resistance is provided.

According to some embodiments of the present disclosure, a display device having the above display panel is provided.

The display panel according to the embodiments of the present disclosure includes a cover plate, a screen film layer, and a buffer layer, wherein the buffer layer is arranged on a side, distal to the cover plate, of the screen film layer, and the buffer layer is a buffer layer having at least one buffer chamber.

In the display panel according to the embodiments of the present disclosure, the buffer chambers are arranged in the buffer layer, such that the display panel has good impact resistance.

According to some embodiments of the present disclosure, the buffer layer includes a substrate and a buffer member arranged on the substrate, wherein the buffer member is disposed between the substrate and the screen film layer, and the buffer chambers are arranged in the buffer member.

According to some embodiments of the present disclosure, the substrate is made of polyimide or polyethylene terephthalate, and the substrate has a thickness of 50 µm to 100 µm.

According to some embodiments of the present disclosure, the substrate is made of stainless steel, and the substrate has a thickness of 30 µm to 50 µm.

According to some embodiments of the present disclosure, the buffer member is made of one or a combination of more of acrylic resin, silica gel, polyurethane, siloxane, and a boric acid-modified hydroxy-terminated polysiloxane-silica light impact-hardening polymer composite material.

According to some embodiments of the present disclosure, the buffer member has a thickness of 100 µm to 200 µm.

According to some embodiments of the present disclosure, the buffer member has an elasticity modulus of 30 KPa to 100 KPa.

According to some embodiments of the present disclosure, the buffer chamber is in a cross-sectional shape of one or a combination of a rectangle, a circle, and a rhombus.

According to some embodiments of the present disclosure, the buffer chambers are obtained by a laser cutting or die cutting process.

In another aspect, the display device according to the embodiments of the present disclosure includes the above display panel.

The advantages of the display device and the display panel are the same as those of the prior art, and are not repeated herein.

Additional aspects and advantages of the present disclosure will be set forth in part in the following description, and in part will be obvious from the following description, or will be learned by practice of the present disclosure.

Reference numerals and denotations thereof:

DETAILED DESCRIPTION

Embodiments of the present disclosure are described hereinafter in detail, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions throughout. The embodiments described hereinafter with reference to the accompanying drawings are illustrative and intended to explain the present disclosure and should not be construed as limiting the present disclosure.

In the description of the present disclosure, it is to be understood that directions or positional relationships indicated by the terms “front surface,” “back surface,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “inner,” “outer,” and the like are those shown based on the accompanying drawings, are merely intended to facilitate and simplify description rather than to indicate or imply that the indicated apparatus or element must have a specific direction and be structured and operated according to the specific direction, and should not be construed as limiting the present disclosure.

In the present disclosure, unless otherwise clearly specified and defined, the terms “mounted,” “connected,” “fixed,” and the like should be comprehended in its broad sense. For example, “connected” is “fixedly connect,” “detachably connect” or “integrally connected as one;” “mechanically connect,” “electrically connect,” or “communicate with each other;” “directly interconnect” or “indirectly interconnect through an intermediate;” or “the communication between the interiors of two elements” or “the interaction between two elements.” For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure are interpreted according to specific conditions.

The display panel10according to the embodiments of the present disclosure is described in detail below with reference toFIGS.1to5.

Referring toFIGS.1and2, a display panel10according to the embodiments of the present disclosure includes a cover plate1, a screen film layer2, and a buffer layer3. The buffer layer3is arranged on a side, distal to the cover plate1, of the screen film layer2. That is, the screen film layer2is arranged on a back surface of the cover plate1, and the buffer layer3is arranged on a back surface of the screen film layer2.

The screen film layer2includes a touch layer21, a polarization layer22, and a support film layer23. The touch layer21is connected to the cover plate1via a first adhesive layer24, the touch layer21is connected to the polarization layer22via a second adhesive layer25, and a display device26is arranged between the polarization layer22and the support film layer23.

The buffer layer3includes at least one buffer chamber33. The buffer chamber33is equivalent to an airbag structure. The buffer chamber33is arranged in the buffer layer3. In the case that the display panel10is subjected to an external impact force, the buffer chamber33ensures that the display panel10has a large deformation space, which allows deformation in a larger area to reduce the failure of the display device26or the breakage risk of the screen film layer2and to reduce the maximum localized deformation amount of the display device26in the screen film layer2, such that the display panel10has good impact resistance, the display panel10resists a greater impact force, and the enhancement of the product quality of the display panel10is facilitated.

In the display panel10according to the embodiments of the present disclosure, the buffer chamber33is arranged in the buffer layer3, such that the display panel10deforms in the buffer chambers33in response to being subjected to an impact force. The buffer layer3absorbs an impact energy in response to deforming in the buffer chambers33, and thus the impact energy suffered by the display device26or the screen film layer2is reduced, and it is ensured that the display device26is not easy to damage and the screen film layer2is not easy to break. Therefore, the display panel10of the present disclosure has good impact resistance and resists a greater impact force, such that the display panel10is not easily deformed or damaged, the service life of the display panel10is prolonged greatly, and the property loss of users is reduced.

In the embodiments ofFIGS.1and2, the buffer layer3includes a substrate31and a buffer member32arranged on the substrate31. The buffer member32is disposed between the substrate31and the screen film layer2, and the buffer chamber33is arranged in the buffer member32. The substrate31provides a supporting force for the buffer member32, such that the buffer member32is held on the back surface of the screen film layer2.

Optionally, the buffer member32is cured by ultraviolet (UV) rays to make the adhesive force of the buffer member32reach 1000-1200 gf/25 cm, and then the buffer member32is fixed to the screen film layer2through adhesion, thereby completing the molding process of the buffer layer3and the screen film layer2.

In some embodiments of the present disclosure, the substrate31is made of polyimide (i.e., PI) or polyethylene terephthalate (i.e., PET), and the substrate31has a thickness of 50 µm to 100 µm, thereby ensuring that the substrate31provides a sufficient supporting force for the buffer member32. The substrate31made of polyimide or polyethylene terephthalate, having a thickness of less than 50 µm, has small strength and rigidity, and thus a sufficient support force fails to be supplied to the buffer member32. With a thickness of greater than 100 µm, the substrate31is thick, which is not favorable for the lightweighted and thin design of the display panel10. Optionally, the substrate31has a thickness of 60 µm, 70 µm, 80 µm, 90 µm, or the like.

In some embodiments of the present disclosure, the substrate31is made of stainless steel, and the substrate31has a thickness of 30 µm to 50 µm. That is, in the case that the substrate31is made of stainless steel, even if the substrate31is thin, the substrate31has good strength and rigidity, and supplies a sufficient supporting force to the buffer member32. Various grade specifications of the stainless substrate are present, for example, SUS301, SUS303, SUS304, and SUS316. For the stainless steel substrate, in the case that the substrate31made of stainless steel, having a thickness of less than 30 µm, has small strength and rigidity, and thus a sufficient support force fails to be supplied to the buffer member32. In the case that the substrate31has a thickness of greater than 50 µm, the substrate31is thick, and the weight thereof is heavy, which is not favorable for the light and thin design of the display panel10. Optionally, the substrate31has a thickness of 35 µm, 40 µm, 45 µm, or the like.

In some embodiments of the present disclosure, the buffer member32is made of one or a combination of more of acrylic resin (a generic name for a polymer of acrylic acid, methacrylic acid and derivatives thereof, such as commonly-used acrylic), silica gel, polyurethane (PU), siloxane, and a boric acid-modified hydroxy-terminated polysiloxane-silica light impact-hardening polymer composite material (i.e., P4U).

For example, in the embodiments ofFIG.1, the buffer member32is made of one of acrylic resin, silica gel, polyurethane, siloxane, and a boric acid-modified hydroxy-terminated polysiloxane-silica light impact-hardening polymer composite material.

In the embodiments ofFIG.2, the buffer member32is made of a combination of acrylic resin, silica gel, polyurethane, siloxane, and a boric acid-modified hydroxy-terminated polysiloxane-silica light impact-hardening polymer composite material.

Specifically, in the embodiments ofFIG.2, the buffer member32is of a composite structure, and the buffer member32includes a first material layer321, a second material layer322, and a third material layer323. The second material layer322is disposed between the first material layer321and the third material layer323. The first material layer321, the second material layer322, and the third material layer323is made of different materials, or, the first material layer321and the third material layer323are made of the same material while the second material layer322is made of another material. For example, in some embodiments, the first material layer321and the third material layer323are made of acrylic resin with an elasticity modulus of 30 KPa to 80 KPa, and the second material layer322is made of polyurethane with an elasticity modulus of 30 KPa to 60 KPa.

In the description of the present disclosure, it should be understood that the terms “first,” “second,” and the like are merely used for descriptive purposes only and should not be construed as indicating or implying the relative importance or as implicitly indicating the number of indicated technical features. Thus, features defined as “first,” “second,” and the like explicitly or implicitly include one or more of the features. In the description of the present disclosure, “a plurality of” refers to at least two, e.g., two or three, unless otherwise explicitly defined.

In some embodiments not shown, the buffer member32includes two layers, four layers, five layers or more. These layers are made of the same or different materials, and a single layer is made of a mixture of materials, which is not repeated herein.

In some embodiments of the present disclosure, the buffer member32has a thickness of 100 µm to 200 µm. In the case that the buffer member32has a thickness of less than 100 µm, the buffer chambers33is small, and a sufficient buffer capacity fails to be supplied to the buffer member32. In the case that the buffer member32has a thickness of greater than 200 µm, the buffer member32is thick, which is not favorable for the light and thin design of the display panel10. Optionally, the buffer member32has a thickness of 120 µm, 150 µm, 180 µm, or the like.

In some embodiments of the present disclosure, the buffer member32has an elasticity modulus of 30 KPa to 100 KPa, thereby ensuring that the buffer member32has good impact-buffer properties. In the case that the buffer member32has an elasticity modulus of less than 30 KPa, the buffer member32is hard, and the buffer capacity of the buffer member32is not obvious, and in the case that the display panel10is subjected to an impact force, the buffer member32cannot provide a good buffer force; in the case that the buffer member32has an elasticity modulus of greater than 100 KPa, the buffer member32is too soft, and in the case that the display panel10is not subjected to an impact force, the buffer member32fails to supply a good supporting force to the screen film layer2.

In some embodiments of the present disclosure, the buffer chamber33is in a cross-sectional shape of one or a combination of more of a rectangle, a circle, and a rhombus. For example, in the embodiments ofFIGS.3and4, the buffer chamber33is in a cross-sectional shape of a rectangle with a length a of 3 mm to 10 mm and a width b of 3 mm to 10 mm, a being equal to b, such that the rectangular buffer chamber becomes a square buffer chamber. In the embodiments ofFIG.5, the buffer chamber33is in a cross-sectional shape of a rhombus. In some embodiments not shown, the buffer chamber33is in a cross-sectional shape of a circle or a combination of various shapes.

Referring toFIG.4, a partition wall between two adjacent buffer chambers33has a thickness c of 2 mm to 5 mm so as to ensure that the two adjacent buffer chambers33do not interfere with each other.

In some embodiments of the present disclosure, the buffer chambers33are fabricated by a laser cutting or die cutting process, wherein the laser cutting is picosecond laser or femtosecond laser.

In some embodiments, the substrate31is die-cut or chemically-etched to fabricate a desired size, and the buffer member32is attached to the surface of the substrate31and then laser-cut to fabricate the buffer chambers33in a desired shape.

In other embodiments, the substrate31is die-cut or chemically-etched to fabricate a desired size, and the buffer member32is die-cut to fabricate the buffer chambers33in a desired shape and then attached to the surface of the substrate31.

The buffer layer3having the buffer chambers33is arranged on the back surface of the screen film layer2, such that the display panel10has good impact resistance. For example, in a drop ball test, a drop ball height of the display panel10without any buffer layer3is significantly different from that of the display panel10having a buffer layer3with a different thickness, the drop ball height of the display panel10having the buffer layer3is significantly greater than that of the display panel10without the buffer layer3, and the drop ball height of the display panel10in the case that the buffer layer3is thick is significantly greater than that of the display panel10in the case that the buffer layer3is thin. The detailed results are shown in Table 1:

In another aspect, the display device according to the embodiments of the present disclosure includes the display panel10according to the above embodiments, since the buffer chambers33are arranged in the display panel10, the display panel10has good impact resistance, such that the display device has good impact resistance.

In the description of the specification, the description referring to the terms “one embodiment,” “some embodiments,” “an example,” “specific examples,” “some examples,” or the like means that specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present disclosure. In the specification, the schematic representations of the above terms are not necessarily intended to refer to the same embodiment or example. In addition, the specific features, structures, materials or characteristics described are combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples described in the specification are combined by those skilled in the art.

While embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure and that changes, modifications, substitutions and variations in the above embodiments are made by those of ordinary skill in the art within the scope of the present disclosure.