KR102147964B1 - Electronic device having improved assembling structure for display - Google Patents

Abstract

Various embodiments of the present invention include a display unit including a cell seal along an edge, and at least one sheet disposed at the bottom of the display unit and attached to the display mounting surface of the case frame in a double-sided adhesive manner. ), wherein the at least one sheet provides an electronic device in which an area at least overlapping with an area in which the cell sealing member is disposed is formed as a non-adhesive area, so that an improved display assembly with only existing parts without additional parts By providing the structure, it is possible to contribute to securing the reliability of the electronic device by reducing the possibility of damage due to external impact.

Description

Electronic device with improved display assembly structure {ELECTRONIC DEVICE HAVING IMPROVED ASSEMBLING STRUCTURE FOR DISPLAY}

Various embodiments of the present invention relate to an electronic device, for example, to an electronic device having an improved display assembly structure.

In general, portable electronic devices have diversified functions, while devices having advantageous portability have higher competitiveness. For example, even a portable electronic device having the same function, a slimmer, slimmer, and shorter electronic device is always preferred. Accordingly, manufacturers of portable electronic devices are developing electronic devices that are slimmer and lighter than other products while having the same or better functions.

In response to the above-described trend, recently released electronic devices are replacing or omitting existing accessories with new accessories that are lighter and smaller for the purpose of slimming. Due to the replacement or omission of such an accessory, the electronic device is easily damaged by an external impact, and in particular, an expensive display requires a high cost and a problem to be replaced.

Various embodiments of the present disclosure may provide an electronic device having an improved display assembly structure.

Various embodiments of the present disclosure may provide an electronic device having an improved display assembly structure with only existing components without additional components.

Various embodiments of the present disclosure may provide an electronic device having an improved display assembly structure implemented to contribute to securing the reliability of the electronic device by reducing the possibility of damage even from an external impact or dropping.

According to various embodiments of the present invention, a display unit including a cell seal along an edge and at least one sheet disposed at the bottom of the display unit and attached to the display mounting surface of the case frame in a double-sided adhesive manner Including a (sheet), the at least one sheet may provide an electronic device in which an area at least overlapping with an area in which the cell sealing member is disposed is formed as a non-adhesive area.

According to various embodiments of the present disclosure, a case frame including a display mounting surface and a display unit including a cell seal along the rim, and a double-sided adhesive method are used to remove air bubbles from the bottom of the display unit. Including a laminated emboss sheet, a buffer sheet laminated by a double-sided adhesive method for buffering at the bottom of the embossed sheet, and a conductive sheet laminated with a double-sided adhesive method for noise shielding at the bottom of the cushioning sheet, the embossed sheet, At least one of the buffer sheet and the conductive sheet may provide an electronic device in which an area at least overlapping with an area in which the cell sealing member is disposed is formed as a non-adhesive area.

According to various embodiments of the present disclosure, by providing an improved display assembly structure with only existing parts without additional parts, it is possible to contribute to securing reliability of an electronic device by reducing the possibility of damage due to external impact.

1 is a perspective view of an electronic device having a display assembly structure according to various embodiments of the present disclosure.
2 is an exploded perspective view of an electronic device according to an embodiment of the present invention.
3 is a diagram illustrating a configuration of a display unit according to an embodiment of the present invention.
4 is a cross-sectional view of a main part showing an assembly structure of a display according to an embodiment of the present invention.
5 is a diagram showing the configuration of a conductive sheet according to an embodiment of the present invention.
6 is a perspective view illustrating a case frame of an electronic device in which a display is mounted according to an exemplary embodiment of the present invention.
7A and 7B are perspective views of main parts comparing stress behavior with respect to portion A of FIG. 6 when the electronic device falls according to an exemplary embodiment of the present invention.
8A and 8B are perspective views of main portions comparing stress behavior with respect to portion B of FIG. 6 when the electronic device falls according to an exemplary embodiment of the present invention.
9 is a diagram illustrating a breakage point of an electronic device to which a display assembly structure is applied according to various embodiments of the present disclosure.
10A and 10B are configuration diagrams showing a non-adhesive portion of a conductive sheet according to an embodiment of the present invention.

Hereinafter, various embodiments of the present invention will be described in detail with reference to the accompanying drawings. Further, in describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary depending on the intention or custom of users or operators. Therefore, the definition should be made based on the contents throughout this specification.

Various embodiments of the present invention have shown and described a portable electronic device for communication including a display. However, it is not limited thereto, and can be applied to various electronic devices having a display.

In describing various embodiments of the present invention, the display has disclosed and described organic light emitting diodes (OLED) as a display unit, but is not limited thereto. For example, it can be applied to various display units including a substrate formed of low-temperature crystalline silicon. Also, it can be applied to general LCD modules. According to one embodiment, various embodiments of the present invention may be applied to an active matrix OLED (AMOLED).

In describing various embodiments of the present invention, the display may be a concept including a touch sensor together. According to an embodiment, it may be contributed as a touch screen including various display units using TFT thin film substrates (LTPS substrates) such as On-cell type OLED and In-cell type OLED, and a touch sensor coupled thereto.

Various embodiments of the present invention are various electronic devices including a display on the front surface, for example, a personal digital assistant (PDA), a laptop computer, a mobile phone, a smart phone, and a netbook. Applicable to various electronic devices such as (Netbook), Mobile Internet Device (MID), Ultra Mobile PC (UMPC), Tablet Personal Computer (Tablet Personal Computer), navigation, MP3, and wearable electronic devices. I can.

1 is a perspective view of an electronic device having a display assembly structure according to various embodiments of the present disclosure.

A display 10 is installed on the front of the electronic device 100, a speaker device 102 for receiving the voice of the other party is installed on the upper side of the display 10, and the other party is on the lower side of the display 101. A microphone device 103 for transmitting a user's voice to an electronic device may be installed to perform basic communication functions. A touch screen device capable of performing input and output in the same area may be applied to the display 10.

According to various embodiments, components for performing various functions of the electronic device 100 may be disposed around the speaker device 102 of the electronic device. As such parts, a video communication camera device 105 for video telephony (VT) with a counterpart may be installed. In addition, at least one sensor module 104 for variably operating the electronic device 100 may be installed according to the surrounding environment. Such a sensor module 104 detects the surrounding illumination and automatically adjusts the brightness of the display 10 according to the detected illumination value, and/or when mounted on the head of the user during a call, A proximity sensor or the like may be installed to detect and deactivate the display 10.

The electronic device 100 according to various embodiments of the present disclosure may significantly reduce the possibility of damage to the display 10 even when an external shock is caused by a drop while carrying. According to an embodiment, when the electronic device 10 falls on the ground, shock may be transmitted to all of the upper, lower, left, and right edges as well as four corner portions indicated by dotted lines. Due to such an impact, the display 10 may be damaged from a portion most sensitive to the impact, and for example, this portion may become an edge portion of the display 10. However, according to the exemplary embodiment of the present invention, the damage rate can be significantly reduced compared to the conventional display by applying an assembly structure in which the possibility of damage can be significantly reduced even with such an impact in relation to the area corresponding to the edge portion of the display. .

Hereinafter, the display assembly structure will be described in detail.

2 is an exploded perspective view of an electronic device according to an embodiment of the present invention.

In describing an exemplary embodiment of the present invention, the display unit 11 may be a concept including an OLED or a touch screen device including a touch sensor in an upper or lower area of the display unit 11. According to an embodiment, the display unit 11 may be an OCTA (On Cell TSP AMOLED).

Referring to FIG. 2, the electronic device 100 may be fixed in such a manner that the display unit is attached to the display mounting surface 1061 of the case frame 106, and a window for protecting the display unit 11 (12) can be mounted.

According to an embodiment, a gel-type resin layer (SVR) 13 may be interposed between the window 12 and the display unit 11. The gel-type resin layer 13 may buffer an external impact applied to the window 12 and help to form an image displayed on the display unit 11 more clearly.

According to an embodiment, the emboss sheet 14, the buffer sheet 15, and the conductive sheet 16 may be sequentially stacked on the lower side of the display unit 11.

According to an embodiment, the emboss sheet 14 may be formed with a plurality of embosses to remove air bubbles or the like that may occur on the adhesive surface of the display unit.

According to one embodiment, the buffer sheet 15 may be disposed under the embossed sheet 14. According to an embodiment, the buffer sheet 14 may be used to buffer an external shock applied to the display unit 11. According to one embodiment, the buffer sheet 15 may be formed of a sponge, poron, or the like.

According to an embodiment, the conductive sheet 16 may be applied to shield noise generated from the display 10 to prevent performance degradation of peripheral electronic components. Also, it may be used to prevent performance degradation of the display 10 due to noise generated from peripheral electronic components. For example, when the display 10 and the antenna radiator are installed together, the radiating performance of the antenna radiator may be degraded by noise generated from the display 10. In this case, by interposing the conductive sheet 16 between the display 10 and the antenna radiator, such performance degradation can be prevented in advance.

According to various embodiments, all of the sheets 14, 15, and 16 stacked on the lower side of the display may be applied using a double-sided adhesive method. According to an embodiment, a double-sided tape may be applied to the upper and lower surfaces of each of the sheets 14, 15, and 16. According to one embodiment, an adhesive may be applied to the upper and lower surfaces of each sheet.

According to various embodiments of the present invention, an organic material is filled between the upper and lower substrates in the display unit 11, and a cell seal member (cell seal) along the rim so that the organic material is not exposed to air and is sealed (Fig. 3 114) of may apply. Since the cell sealing member 114 is generally formed of a glass frit composite, there is a high possibility of being damaged by an external impact.

According to an embodiment, a coupling part for assembling case frames (front case frame and rear case frame) along the rim of the electronic device 100, assembling electronic components, and assembling bushings or screws (opening) Alternatively, when an adhesive layer is applied to the rim due to a recess including a screw hole or the like, a discontinuous surface that is not bonded is generated at the bonding portion. In addition, even if there is no bonding portion providing the above-described adhesive discontinuous surface, when the above-described sheets 14, 15, and 16 are adhered, a self-discontinuous surface may be generated due to bubbles or the like, which may lead to non-uniform adhesion. According to one embodiment, the stress is concentrated by an external impact in the region including the discontinuous surface, and the stress is transmitted to the cell sealing member 114 of the display unit 11 disposed at a position overlapping the discontinuous surface. It is likely to be damaged.

According to various embodiments of the present disclosure, an adhesive layer or an adhesive is not applied to a corresponding region of the above-described sheets 14, 15, 16 overlapping with the position where the cell sealing member 114 of the display unit 11 is disposed. . According to various embodiments of the present invention, it is possible to prevent the cell sealing member 114 of the display unit 11 from being damaged by stress concentrated on the discontinuous surface due to external impact by excluding the above-described adhesive discontinuous surface in advance. .

3 is a diagram illustrating a configuration of a display unit according to an embodiment of the present invention.

Referring to FIG. 3, the display unit 11 may include a display area 116. According to an embodiment, the cell sealing member 114 may be disposed along the edge of the display unit 11. According to one embodiment, the various sheets 14, 15, and 16 stacked on the bottom of the display unit 11 are excluded from the adhesive layer in the area at least overlapping the area where the cell sealing member of the display unit is disposed. The occurrence of a discontinuous surface on the cell sealing member can be prevented in advance. According to one embodiment, such an adhesive layer may be formed by a separate double-sided tape, or may be formed by applying an adhesive.

According to an embodiment of the present invention, the display unit 11 includes a TFT substrate 111, an organic materials layer 113, a cover glass 112, and a polarizer 115. ) May be configured in a manner that is sequentially stacked from the bottom to the top. According to an embodiment, the TFT substrate 111 may emit light by applying a current to the organic material layer 113. According to an embodiment, the display unit 11 has a structure in which an organic material layer 113 in the form of a functional thin film is inserted between an ITO (Induim Tin Oxide) electrode (anode, anode) and an Al metal electrode (cathode, cathode), When the TFT is turned on, a driving current is applied to the anode, holes are injected from the anode, and electrons are injected from the cathode, and electrons and holes meet while moving in the organic material layer to generate light.

According to an embodiment, the organic material layer 113 includes HIL (Hole Injection Layer: hole injection layer), HTL (Hole Transfer Layer: hole transport layer), EIL (Emission Material Layer: electron injection layer), ETL (Electron Transfer Layer: electron). Transport layer), EML (Electron Injection Layer: light emitting layer), etc. may be composed of a functional organic material layer. According to one embodiment, HIL facilitates injection of holes, and HTL facilitates movement of injected holes. EIL and ETL can facilitate electron injection and transport. The injected electrons and holes can be combined in EML to emit light. EML is a material that expresses the color of a display, and can be composed of a host that determines the lifespan of organic materials and a dopant that determines color and efficiency.

According to one embodiment, the cell sealing member 114 is interposed along the edge of the display unit 11 in order to regulate the organic material 113 interposed between the above-described cover glass 112 and the TFT substrate 111. I can. A photocurable resin may be used as the cell sealing member 114, but recently, a glass frit composite having characteristics such as low glass transition temperature, small coefficient of thermal expansion, high infrared absorption, excellent water resistance, durability and fluidity has been used. Can be used. According to an embodiment, the glass frit may be dispersed in an organic vehicle to form a paste, and then applied between a cover glass and a TFT substrate to be used. In this case, the organic vehicle may be an organic binder that imparts liquid properties to the paste composition, and may further include an organic solvent.

According to various embodiments of the present invention, the cell sealing member 114 made of a glass frit composition is easily damaged by external impact. Therefore, an adhesive layer is applied to the corresponding region of the above-described sheets 14, 15, 16 overlapping the region in which the cell sealing member 114 is disposed, in order to exclude the adhesive discontinuity that causes stress concentration due to external impact. It doesn't work.

4 is a cross-sectional view of a main part showing an assembly structure of a display according to an embodiment of the present invention. 5 is a diagram showing the configuration of a conductive sheet according to an embodiment of the present invention.

Referring to FIG. 4, a window 12 may be stacked on the display unit 11 by a gel-type resin layer 13. According to an embodiment, an emboss sheet 14, a buffer sheet 15, and a conductive sheet 16 are sequentially stacked on the lower side of the display unit 11, and finally attached to the display mounting surface of the case frame 106. Can be. According to one embodiment, the emboss sheet 14, the buffer sheet 15, and the conductive sheet 16 may all be configured in a double-sided adhesive method. However, the adhesive layer may be excluded in a region overlapping with the interposed cell sealing member 114 to protect the organic material 113 between the cover glass 112 and the TFT substrate 111 of the display unit 11.

Referring to FIG. 5, as shown, the region of the conductive sheet 16 is divided into an adhesive region 161 and a non-adhesive region 162, but is not limited thereto, and the buffer sheet 15 and the embossing thereon In the sheet 14, an area overlapping the non-adhesive area of the conductive sheet 16 may be applied as the non-adhesive area.

According to various embodiments, the non-adhesive region 162 may include at least an overlapping region of the cell sealing member 114. According to an embodiment, the non-adhesive region 162 may have a width w from the end of the adhesive region to the edge of 5 mm to 20 mm.

6 is a perspective view illustrating a case frame of an electronic device in which a display is mounted according to an exemplary embodiment of the present invention.

Referring to FIG. 6, a case frame 106 including a display mounting surface 1061 on which a display of an electronic device is mounted is illustrated. According to one embodiment, the case frame 106 is a coupling part (recess including an opening or screw hole) for assembling electronic components, bushings, screws, etc. It may include. These parts can be represented by the illustrated A region and B region, and when an adhesive layer including such a bonding part is applied, a discontinuous surface in which an adhesive layer is not formed is generated in the corresponding part, and this discontinuity is stressed by external impact. A concentration phenomenon occurs, and the concentrated stress may propagate to the cell sealing member located thereon, causing breakage.

7A and 7B are perspective views of main parts comparing stress behavior with respect to portion A of FIG. 6 when the electronic device falls according to an exemplary embodiment of the present invention.

FIG. 7A is a partially enlarged view showing the display mounting surface 1061 of the case frame 106 including the opening 1065 disposed in the area A of FIG. 6, wherein the adhesive area 1062 is a cell sealing member ( 114) and overlapping areas. Accordingly, the opening 1065 may be formed as a discontinuous surface that does not adhere to the display mounting surface 1061. According to one embodiment, as shown, it can be seen that a considerably high stress is concentrated by an external impact around the discontinuous surface of the opening 1065, as shown.

FIG. 7B is a partially enlarged view showing the display mounting surface 1061 of the case frame 106 including the opening 1065 disposed in the area A of FIG. 6 according to an embodiment of the present invention. An area overlapping the sealing member 114 was formed as a non-adhesive area 1064. In this case, it can be seen that the opening 1065 included in the non-adhesive region 1064 has a considerably low stress concentration, unlike FIG. 7A even when an external impact is applied, as shown.

8A and 8B are perspective views of main portions comparing stress behavior with respect to portion B of FIG. 6 when the electronic device falls according to an exemplary embodiment of the present invention.

8A and 8B are perspective views of main portions comparing stress behavior with respect to portion B of FIG. 6 when the electronic device falls according to an exemplary embodiment of the present invention.

FIG. 8A is a view showing the display mounting surface 1061 of the case frame 106 including the screw hole 1066 disposed in the area B of FIG. 6, wherein the adhesive region 1062 is connected to the cell sealing member 114 It contains overlapping areas. Accordingly, the screw hole 1066 may be formed as a discontinuous surface that does not adhere to the display mounting surface 1061. According to one embodiment, as shown, it was found that a considerably high stress was concentrated around the discontinuous surface of the screw hole 1066 due to external impact.

FIG. 8B shows a display mounting surface 1061 of a case frame 106 including a screw hole 1066 disposed in area B of FIG. 6, according to an embodiment of the present invention, wherein the cell sealing member ( A region overlapping with 114) was formed as a non-adhesive region 1064. In this case, it can be seen that the screw hole 1066 included in the non-adhesive region 164 does not generate a stress unlike FIG. 8A even when an external impact is applied, as shown.

9 is a diagram illustrating a breakage point of an electronic device to which a display assembly structure is applied according to various embodiments of the present disclosure.

Figure (a) shows the damage rate of the electronic device when all regions where the cell sealing members of the display unit overlap are formed of an adhesive layer. In this case, when 124 electronic devices in total were dropped, 69 electronic devices were damaged in the corresponding part, which shows a very high probability of damage with a damage rate of 55.6%.

In (b), the top, left, and right portions of the areas where the cell sealing members overlap each other of the display unit are formed as non-adhesive areas, and the area where the cell sealing members overlap only the lower side is formed as an adhesive area. In this case, if all 32 electronic devices were dropped, 11 electronic devices were damaged, showing a breakage rate of 34.4%, and it was found that most of the damage occurred in the lower part of the display unit where the cell sealing member was overlapped. Could

In (c), all areas where the cell sealing members of the display unit overlap are formed as non-adhesive areas. In this case, if all 24 electronic devices were dropped, 4 electronic devices were damaged, showing a breakage rate of 16.7%, which is significantly lower than in the cases (a) and (b). there was.

10A and 10B are configuration diagrams showing a non-adhesive portion of a conductive sheet according to an embodiment of the present invention.

10A shows the shape of the conductive sheet 17 applied to the case frame 107 of FIG. 10B. According to an embodiment, the conductive sheet 17 may have a non-adhesive region 172 having a predetermined width along an edge of the adhesive region 171 in the center of the conductive sheet 17. According to an embodiment, the non-adhesive area 172 may be an area at least overlapping with a cell sealing member of a display unit, which is not shown. According to an embodiment, the non-adhesive area 172 may be disposed on the upper side and the left and right sides.

A double-sided tape 1072 may be adhered to the display mounting surface 1071 of the case frame 107 illustrated in FIG. 10B. The double-sided tape 1072 may be applied to improve adhesion to the conductive sheet 17. As shown, the side of the lower region 1073 of the double-sided tape 1072 may be formed as a non-adhesive region due to the adhesive region disposed under the conductive sheet 17. According to an embodiment, when the conductive sheet 17 is attached to the display mounting surface 1071 of the case frame 107, the non-adhesive regions 172 formed on the upper side and left and right sides of the conductive sheet 17, and As a result, a region overlapping with the cell sealing member disposed along the edge of the display unit by the non-adhesive region 1073 formed on the double-sided tape 1072 may be applied as the non-adhesive region.

According to various embodiments, at least a region overlapping with the cell sealing member is formed as a non-adhesive region, and a structure (opening, screw hole, etc.) in which a discontinuous surface due to adhesion may occur in the non-adhesive region is included, but is not limited thereto. Does not. For example, a structure (opening, screw hole, etc.) in which a region overlapping with the cell sealing region is formed as a non-adhesive region and a discontinuous surface due to adhesion may be generated may be included in the adhesion region. In this case, the structure in which the discontinuous surface is generated is included in the bonded area, but is not included in the unbonded area, which is an area overlapping with the cell sealing member.

Obviously, there are many different ways by which such embodiments can be modified while remaining within the scope of the claims. In other words, there may be various ways in which the present invention can be practiced without departing from the scope of the following claims.

10: display 11: display unit
12: Window 13: Resin layer
14: emboss sheet 15: buffer sheet
16: conductive sheet 106: case frame
1061: display mounting surface

Claims (20)

In the electronic device,
A display unit including a cell seal along the rim; And
And at least one sheet disposed at the bottom of the display unit and attached to the display mounting surface of the case frame in a double-sided adhesive method,
In the at least one sheet, an area at least overlapping with an area in which the cell sealing member is disposed is formed as a non-adhesive area,
An electronic device in which a structure capable of forming an adhesive discontinuous surface upon bonding is disposed in at least one area of the case frame corresponding to the non-adhesive area.
The method of claim 1,
The at least one sheet includes a conductive sheet for shielding noise.
The method of claim 2,
An electronic device to which a double-sided tape is not applied or an adhesive is not applied to the non-adhesive area of the conductive sheet.
The method of claim 2,
An electronic device in which a buffer sheet for buffering is further interposed between the conductive sheet and the display unit.
The method of claim 4,
The buffer sheet is an electronic device formed of a sponge material.
The method of claim 4,
An electronic device further interposed between the buffer sheet and the display unit with an embossed sheet for removing air bubbles from the display surface.
delete The method of claim 1,
The structure includes at least one of an opening, a screw hole, a recess, and a receiving portion to which various mechanical structures are applied.
The method of claim 1,
An electronic device having a width of the non-adhesive area in a range of 5mm to 20mm.
The method of claim 1,
The display unit is an electronic device including a low temperature crystalline (LTPS) substrate.
The method of claim 1,
The display unit is an electronic device that is an organic light emitting diode (OLED) panel.
The method of claim 1,
The display unit further includes a touch sensor layer.
The method of claim 12,
The display unit is an electronic device that is an OCTA (On Cell Touch Screen Panel (TSP) Active Matrix Organic Light Emitting Diodes (AMOLED)) panel.
The method of claim 1,
The cell sealing member is an electronic device of a glass frit composite.
In the electronic device,
A case frame including a display mounting surface;
A display unit including a cell seal along the rim;
An embossed sheet laminated in a double-sided adhesive method to remove air bubbles from the bottom of the display unit;
A buffer sheet laminated in a double-sided adhesive method for buffering at the bottom of the embossed sheet; And
Including a conductive sheet laminated in a double-sided adhesive method for noise shielding at the bottom of the buffer sheet,
At least one of the embossed sheet, the buffer sheet, and the conductive sheet is formed as a non-adhesive area in an area at least overlapping with an area in which the cell sealing member is disposed,
An electronic device in which a structure capable of forming an adhesive discontinuous surface upon bonding is disposed in at least one area of the case frame corresponding to the non-adhesive area.
The method of claim 15,
An electronic device in which a conductive sheet attached to a display mounting surface of the case frame has a non-adhesive area at least overlapping an area where the cell sealing member is disposed.
delete The method of claim 15,
The structure includes at least one of an opening, a screw hole, a recess, and a receiving portion to which various mechanical structures are applied.
The method of claim 15,
The display unit further includes a touch sensor layer.
The method of claim 19,
The display unit is an electronic device that is an OCTA (On Cell Touch Screen Panel (TSP) Active Matrix Organic Light Emitting Diodes (AMOLED)) panel.

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