Patent ID: 12225150

DETAILED DESCRIPTION

In order to make the objectives, technical solutions and advantages of the present disclosure clearer, the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. Note that embodiments may be implemented in many different forms. Those skilled in the art can easily understand the fact that the manner and content can be changed into various forms without departing from the spirit and scope of the present disclosure. Therefore, the present disclosure should not be construed as being limited only to the contents described in the following embodiments. The embodiments of the present disclosure and the features of the embodiments may be arbitrarily combined with each other without conflict.

In the drawings, the size of each constituent element, the thickness of a layer, or a region are exaggerated sometimes for clarity. Therefore, one form of the present disclosure is not necessarily limited to this size, and the shapes and sizes of various components in the drawings do not reflect the true scale. In addition, the drawings schematically show ideal examples, and one form of the present disclosure is not limited to the shapes, numerical values, and the like shown in the drawings.

It should be noted that “on” described in this text can mean that one layer is directly formed or disposed on another layer, or it can mean that one layer is indirectly formed or disposed on another layer, that is, other layers exist between two layers.

The terms “a”, “the”, “said” are used to indicate the presence of one or more elements/components/etc.; the term “including” is used to indicate an open-ended inclusive meaning and refers to that there may be additional elements/components/etc. in addition to listed elements /components/etc.

In this specification, ordinal numbers such as “first” and “second” are provided to avoid confusion of constituent elements, and are not intended to be limited in quantity.

In this specification, unless expressly stated and defined, the term “connected” should be construed in a broad sense. For example, it may be a fixed connection, or a detachable connection, or an integral connection. It may be a mechanical connection, or an electrical connection. It may be a direct connection, or an indirect connection through an intermediate element, or an internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood depending on specific situations.

An embodiment of the present disclosure provides a display apparatus, which can be a foldable product, but not limited to this. The display apparatus can also be a non-folding product. Specifically, as shown inFIG.1, the display apparatus can include a first display module10, a first flexible circuit board11and a rigid membrane12.

The first display module10may be a flexible display module. Optionally, the first display module10may include a first display panel101and a first heat dissipation film layer102. The first display panel101may be an OLED (Organic Light-Emitting Diode) display. It should be noted that the first display panel101may have a display side and a back side opposite to each other in the thickness direction Z. The first heat dissipation film layer102may be disposed on the back side of the first display panel101. The orthographic projection of the first heat dissipation film layer102on the first display panel101is located in the first display panel101or coincides with the first display panel101.

In the embodiment of the present disclosure, the heat generated by the first display panel101can be quickly dissipated by the first heat dissipation film layer102, to avoid damage to the first display panel101due to excessively high temperature.

For example, the first heat dissipation film layer102may be a multi-layer structure. The first heat dissipation film layer102may include an EMBO (embossed silicone buffer material) layer, a Foam (foam material) layer, a PI (polyamide) layer, a Cu (copper) foil layer and a wave absorbing material layer which are arranged in sequence, but not limited to this. The first heat dissipation film layer102can also be composed of other film layers, as long as it can ensure that the first heat dissipation film layer102has good heat dissipation performance and bendable performance. In addition, the first heat dissipation film layer102may also have a single layer structure, depending on the specific situation.

The first flexible circuit board11can be disposed on the back side of the first display panel101. Specifically, the first flexible circuit board11can be disposed on the side of the first heat dissipation film layer102away from the first display panel101. As shown inFIG.1, the first flexible circuit board11may include a first part110, a second part111, and a bending part112connecting the first part110and the second part111. Specifically, the orthographic projection of the bending part112on the first display panel101may be located in the display area of the first display panel101. The first part110can be electrically connected to the first display panel101. The second part111can be located on the side of the first part110away from the first display panel101. It should be understood that, as shown inFIG.2, the display apparatus of the embodiment of the present disclosure may further include a first main circuit board13. The second part111may be electrically connected to the first main circuit board13. It should be noted that the first main circuit board13may be located on a side of second part111away from the first part110.

As shown inFIG.1andFIG.2, the rigid membrane12may be located between the back side of the first display panel101and the bending part112. Specifically, the rigid membrane12can be disposed on the side of the first heat dissipation film layer102away from the first display panel101. The orthographic projection of the rigid membrane12on the first display panel101can be located in the orthographic projection of the first heat dissipation film102on the first display panel101. The rigid membrane12can support the bending part112of the first flexible circuit board11. It should be understood that the rigidity of the rigid membrane12may be greater than the rigidity of the first heat dissipation film102and the first display panel101. That is, compared with the first display panel101and the first heat dissipation film layer102, the rigid membrane12is less likely to be deformed by the force. For example, the material of the rigid membrane12can be polyimide (PI) or stainless steel (SUS). It should be understood that the PI material used for fabricating the rigid membrane12should be a hard PI material.

In addition, the thickness of the rigid membrane12may be 0.1 mm to 0.5 mm, for example, 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, etc. By designing the thickness of the rigid membrane12to be greater than or equal to 0.1 mm, it can ensure that the rigid membrane12has sufficient rigidity. By designing the thickness of the rigid membrane12to be less than or equal to 0.5 mm, it can reduce the overall thickness of the product.

In the embodiment of the present disclosure, since the rigid membrane12is disposed between the bending part112of the first flexible circuit board11and the back side of the first display panel101, and the rigid membrane12is less likely to be deformed by the force, during the installation process, the rigid membrane12can disperse the resilient force generated by the bending part112. In this way, it can avoid generating obvious press marks at the position corresponding to the bending part112in the display area of the first display panel101, and improve the display effect.

It should be noted that, the bending part112of the first flexible circuit board11in the embodiment of the present disclosure is not limited to be provided in the display area of the first display panel101. The bending part112of the first flexible circuit board11may also be provided in a non-display area.

The installation process of aforementioned structures may be as follows: first, the second part111of the first flexible circuit board11is electrically connected to the first main circuit board13, and then the first flexible circuit board11is bent, to form the aforementioned bending part112, and the first part110is made to be located on the side of the second part111away from the first main circuit board13. It should be noted that the first part110can be electrically connected to the first display panel101before the second part111is electrically connected to the first main circuit board13, or the first part110can be electrically connected to the first display panel101when the first part110is bent to the side of the second part111away from the first main circuit board13.

For example, a part of the first display panel101can be bent to the back side (not shown in the figure) and bound with the first part110of the first flexible circuit board11, to realize the electrical connection of the first display panel101and the first part110. As shown inFIG.2, the first main circuit board13may be provided with a first connection terminal14, and the second part111of the first flexible circuit board11may be provided with a mating terminal15that can be buckled or inserted with the first connection terminal14. That is, the electrical connection of the first main circuit board13and the second part111is realized by the mating terminal15being buckled or inserted with the first connection terminal14.

In the embodiment of the present disclosure, the bending axis corresponding to the bending part112of the first flexible circuit board11may extend in a first direction (not shown in the figure), and the orthographic projection of the bending part112on the first display panel101has a first boundary A and a second boundary B opposite to each other in the second direction X. It should be noted that the second boundary B is the side of the bending part112close to the first part110and the second part111, the first boundary A is the side of the bending part112away from the first part110and the second part111, as shown inFIGS.1and2. The orthographic projection of the rigid membrane12on the first display panel101has a third boundary C and a fourth boundary D opposite to each other in the second direction X. As shown inFIG.1andFIG.2, the third boundary C is located at a side of the first boundary A away from the second boundary B, and the fourth boundary D is located at a side of the second boundary B away from the first boundary A.

In this embodiment, by locating the first boundary A and the second boundary B of the bending part112at the inner side of the third boundary C and the fourth boundary D of the rigid membrane12, the rigid membrane12can better disperse the resilient force generated by the bending part112. Specifically, compared with the solution in which the first boundary A and the second boundary B of the bending part112are located outside the third boundary C and the fourth boundary D of the rigid membrane12, it can avoid the resilient force generated by the bending part112concentrated on the third boundary C and the fourth boundary D of the rigid membrane12, thus avoiding generating press marks at positions corresponding to the third boundary C and the fourth boundary D of rigid membrane12in the first display panel101, and improving the display effect.

It should be noted that the second direction X mentioned in the embodiment of the present disclosure is perpendicular to the first direction (not shown in the figure). Both the first direction and the second direction X are perpendicular to the thickness direction Z (i.e., the thickness direction Z of the display apparatus) of the first display panel101.

Optionally, the distance between the third boundary C of the rigid membrane12and the first boundary A of the bending part112in the second direction X may be equal to the distance between the fourth boundary D of the rigid membrane12and the second boundary B of the bending part112in the second direction X, which can ensure the uniformity of the overall force of the rigid membrane12, so as to better disperse the stress, but not limited to this. The distance between the third boundary C of the rigid membrane12and the first boundary A of the bending part112in the second direction X may also be unequal to the distance between the fourth boundary D of the rigid membrane12and the second boundary B of the bending part112in the second direction X.

In the embodiment of the present disclosure, the distance between the third boundary C of the rigid membrane12and the first boundary A of the bending part112in the second direction X may be greater than or equal to 1 cm, and the distance between the fourth boundary D of the rigid membrane12and the second boundary B of the bending part112in the second direction X may be greater than or equal to 1 cm. This design enables the rigid membrane12to better disperse the stress.

It should be noted that, the area of the rigid membrane12in the embodiment of the present disclosure can be determined according to actual situations, as long as it can better disperse the stress to avoid the installation press marks.

In some embodiments of the present disclosure, as shown inFIG.3, a buffer part16may be disposed in the bending space of the bending part112, and the orthographic projection of the buffer part16on the first display panel101is located in the orthographic projection of the rigid membrane12on the first display panel101. Specifically, the buffer part16may be disposed on a position of the bending part112close to the first part110, and the orthographic projection of the buffer part16on the first display panel101is located in the central area of the orthographic projection of the rigid membrane12on the first display panel101.

In this embodiment, by disposing the buffer part16in the bending space of the bending part112, the design enables the buffer part16to provide a certain buffer force for the bending part112, to ensure that the bending part112has good ability to recover deformation, and to avoid the situation that the bending part112forms a dead break during the installation process.

It should be understood that the display apparatus of the embodiment of the present disclosure is not limited to include the aforementioned first display panel101, the first heat dissipation film layer102, the first flexible circuit board11, the first main circuit board13, the rigid membrane12, the buffer part16and other structures. In addition to these structures, the display apparatus can also include a middle frame structure. The middle frame structure includes at least a first middle frame. Specifically, as shown inFIG.4, the first middle frame may include a first mounting plate17and the first side plate18. The first mounting plate17has the first mounting surface170and the second mounting surface171opposite to each other. The first side plate18is arranged at periphery of the first mounting surface170and forms a first mounting groove19with the first mounting surface170. It should be noted that when the first mounting surface170is rectangular, the first side plate18can be arranged around four sides of the first mounting surface170, but not limited to this. The first side plate18can also be arranged around three sides of the first mounting surface170, or arranged at opposite two sides of the first mounting surface170, or the like, depending on the specific situation.

The first display panel101, the first heat dissipation film layer102, the first flexible circuit board11and the rigid membrane12mentioned above can be located in the first mounting groove19, and the first part110is located on a side of the second part111away from the first mounting surface170. It should be noted that, as shown inFIG.4, the first mounting surface170may be provided with an escape groove170acorresponding to the bending part112, and the first mounting surface170is provided with a first assembly groove170b.The aforementioned first main circuit board13can be located in the first assembly groove170b,and a part of the first connection terminal14extends out of the first assembly groove170band is electrically connected to the second part111.

In the embodiment of the present disclosure, the middle frame structure may be a folding mechanism. In addition to the first middle frame, the middle frame structure may further include a second middle frame rotatably connected to the first middle frame. As shown inFIG.5, the second middle frame may be rotatably connected to the first middle frame through the rotating shaft20. The second middle frame can at least include a second mounting plate21. The second mounting plate21has a third mounting surface210and a fourth mounting surface211opposite to each other. The relative rotation of the first middle frame and the second middle frame can make the third mounting surface210rotate to a position facing the second mounting surface171.

Optionally, as shown inFIG.5, the display apparatus according to the embodiment of the present disclosure may further include a second display module22. Specifically, the second display module22may include a second display panel220and a second heat dissipation film layer221. The second display panel220can be located on the side of the second mounting surface171away from the first mounting surface170and located on the side of the third mounting surface210away from the fourth mounting surface211. The second heat dissipation film layer221is located on the side of the second mounting surface171away from the first mounting surface170and located on the side of the third mounting surface210away from the fourth mounting surface211, and is provided on the back side of the second display panel220. The orthographic projection of the second heat dissipation film layer221on the second display panel220is located in the second display panel220or coincides with the second display panel220.

In addition, the structures of the second heat dissipation film layer221and the aforementioned first heat dissipation film layer102may be the same, and details are not repeated herein.

The second display panel220may be an OLED display, and the second display module22may be a flexible display panel. When the first middle frame and the second middle frame are relatively rotated so that the third mounting surface210is rotated to a position facing the second mounting surface171, the second display module22can be bent. That is, the entire display apparatus can be bent inward. That is, the display surface of the second display panel220is located inside the bending.

In an embodiment of the present disclosure, as shown inFIG.5, the display apparatus may further include a second main circuit board23and a second flexible circuit board24. The second main circuit board23may be disposed on the first mounting board17or the second mounting board21. The second main circuit board23is provided with a second connection terminal. One end of the second flexible circuit board24is electrically connected to the second connection terminal25, and the other end of the second flexible circuit board24is electrically connected to the second display panel220.

For example, as shown inFIG.5, the aforementioned first mounting surface170may further be provided with a second assembly groove170c,and the first mounting plate17is also provided with a through hole (not shown in the figure) penetrating the first mounting surface170and the second mounting surface171. The through hole communicates with the second assembly groove170c.The second main circuit board23and the second connection terminal25are located in the second assembly groove170c,and one end of the second flexible circuit board24is electrically connected to the second connection terminal25through the through hole.

It should be noted that the second main circuit board23and the first main circuit board13can be in an integrated structure or can be provided independently of each other. It should be understood that when the second main circuit board23and the first main circuit board13are in an integrated structure, the first assembly groove170band the second assembly groove170ccan communicate with each other.

In the embodiment of the present disclosure, as shown inFIG.5, the second side plate26may be provided around the second mounting surface171of the first mounting plate17. It should be understood that one side of the second mounting surface171adjacent to the third mounting surface210may not be provided with the second side plate26, and the other three sides may be provided with the second side plate26, but not limited to this. The third side plate27may be provided around the third mounting surface210of the second mounting plate21. It should be understood that a side of the third mounting surface210adjacent to the second mounting surface171may not be provided with the third side plate27, and the other three sides can be provided with the third side plate27, but not limited to this. The second side plate26, the second mounting surface171, the third mounting surface210and the third side plate27can enclose the second mounting groove28. The second display module22, the second flexible circuit board24aforementioned can be located in the second mounting groove28.

In addition, as shown inFIG.5, the display apparatus of the embodiment of the present disclosure may further include a first cover plate29and a second cover plate30. The first cover plate29may be disposed on the display side of the first display panel101. An edge of the first cover plate29is beyond an edge of the first display panel101, and a part of the first cover plate29beyond the first display panel101is overlapped on an end surface of the first side plate18away from the first mounting surface170. For example, the end surface of the first side plate18away from the first mounting surface170may be provided with a positioning groove180, as shown inFIG.4, the part of the first cover plate29beyond the first display panel101is overlapped in the positioning groove180, as shown inFIG.5, but not limited thereto. The second cover plate30can be disposed on the side (i.e., the display side of the second display panel220) of the second display panel220away from the second mounting surface171and the third mounting surface210, the edge of the second cover plate30can also extend beyond the edge of the second display panel220. For example, the second cover plate30can be embedded in the second mounting groove28, and the surface of the second cover plate30away from the second display panel220may be flush with the end surface of the second side plate26away from the first mounting plate17and the end surface of the third side plate27away from the second mounting plate21, but not limited thereto.

It should be noted that the second cover30can be a flexible cover, such as a PI cover. That is to say, the second cover30can be bent. Specifically, when the first middle frame and the second middle frame are relatively rotated so that the third mounting surface210is rotated to a position facing the second mounting surface171, the second cover plate30can be bent along with the second display module22. However, the first cover plate29can be a rigid cover plate, such as a glass cover plate, etc. That is, the first cover plate29cannot be bent, but not limited to this. The first cover plate29can also be a flexible cover board, depending on specific situations.

As shown inFIG.5, the fourth side plate33can also be arranged around the fourth mounting surface211. It should be noted that when the fourth mounting surface211is rectangular, the fourth side plate33can be arranged around four sides of the fourth mounting surface211, but not limited to this. The fourth side plate33can also be arranged around three sides of the fourth mounting surface211, or arranged at opposite two sides of the fourth mounting surface211, or the like, depending on the specific situation.

In addition, the second middle frame may further include a third mounting plate31opposite to the second mounting plate21. The fourth side plate33may enclose a third mounting groove32together with the third mounting plate31and the fourth mounting surface211of the second mounting plate21. The display apparatus may further include a battery (not shown in the figure) and other structures. The battery can be placed in the third mounting groove32, but not limited to this. The third mounting groove32can also be provided with other structures. It should be noted that, the second middle frame in the embodiment of the present disclosure may also not include the third mounting plate31, depending on the specific situation.

It should be noted that, the entire first middle frame in the embodiment of the present disclosure may have an integrated structure, and the entire second middle frame may also have an integrated structure.

Based on the foregoing, the first display panel101of the embodiment of the present disclosure may be a sub display panel of the entire display apparatus, and the second display panel220may be a main display panel of the entire display apparatus. When the display apparatus is in the unfolded state, the second display panel220may be used for display, and when the display apparatus is in a folded state, the first display panel101may be used for display.

In the embodiments of the present disclosure, the specific type of the display apparatus is not particularly limited, and any type of display apparatus commonly used in the art can be used, such as a mobile phone, etc. Those skilled in the art can make corresponding selection according to the specific use of the display apparatus, which will not be repeated herein.

It should be noted that, in addition to the aforementioned structure, the display apparatus also includes other necessary parts and components. Taking a mobile phone as an example, it may also include, for example, a casing, a power cord, etc. Those skilled in the art can make corresponding supplements according to the specific usage requirements of the display apparatus, which will not be repeated herein.

Other embodiments of the present disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common general knowledge or conventional technical means in the technical field not disclosed by this disclosure. The specification and embodiments are to be regarded as exemplary only, with the true scope and spirit of the disclosure being indicated by the appended claims.