TWI773477B - Display device - Google Patents

Abstract

A display device including a display panel, a frame and a buffer structure. The display panel has a first surface and a second surface adjacent to each other, wherein a normal direction of the first surface is different from a normal direction of the second surface. The frame covers the second surface of the display panel and exposes the first surface. The buffer structure is located between the frame and the second surface of the display panel. The buffer structure includes a first portion and a second portion connected to each other. The first portion is closer to the first surface than the second portion, and the length of the first portion of the buffer structure in the normal direction of the first surface is less than or equal to the length of the second surface.

Description

display device

The present invention relates to a device, and more particularly, to a display device.

In response to the diversified applications of display devices, various manufacturing technologies and product designs are constantly being introduced. In order to provide more diverse applications, products with narrow or no borders have been proposed one after another.

However, how to avoid light leakage at the edge of the display panel while achieving a narrow frame or no frame has become an extremely unsolved problem in the industry.

The present invention provides a display device which can achieve a borderless visual effect and avoid light leakage at the edge of the display panel.

The display device of the present invention includes a display panel, a frame and a buffer structure. The display panel has a first surface and a second surface adjacent to each other, wherein the normal direction of the first surface is different from the normal direction of the second surface. The frame covers the second surface of the display panel and exposes the first surface. The buffer structure is located on the frame and display surface Between the second surfaces of the plates, the buffer structure includes a first part and a second part connected, the first part is closer to the first surface than the second part, and the first part of the buffer structure is in the normal direction of the first surface The length of the upper surface is less than or equal to the length of the second surface.

In an embodiment of the present invention, the above-mentioned first part includes white glue, and the second part includes black glue.

In an embodiment of the present invention, the above-mentioned first part and the second part are arranged side by side in the normal direction of the second surface.

In an embodiment of the present invention, a connection surface between the first part and the second part is located within the orthographic projection range of the display panel to the frame along the normal direction of the second surface.

In an embodiment of the present invention, the light absorptivity of the second portion is greater than the light absorptivity of the first portion.

In an embodiment of the present invention, in the normal direction of the second surface, the thickness of the first portion is equal to the thickness of the second portion, and the optical density of the second portion is greater than that of the first portion.

In an embodiment of the present invention, the optical density of the first portion is greater than 0.7, and the optical density of the second portion is greater than 3.

In an embodiment of the present invention, the material of the first part and the material of the second part of the buffer structure respectively comprise silicone glue, UV glue, PUR glue or foam.

In an embodiment of the present invention, the above-mentioned display panel has a third surface opposite to the first surface, the second surface is located between the first surface and the third surface, The display device further includes a bonding layer, the bonding layer has a first surface and a second surface adjacent to each other, the first surface is disposed on the third surface, and the second part of the buffer structure extends to the second surface.

In an embodiment of the present invention, it further includes a substrate and an optical film, the optical film is disposed between the substrate and the third surface, and the second part of the buffer structure extends to the side of the substrate and the optical film facing the frame .

Based on the above, in the display device of the present invention, the buffer structure is located between the frame of the display panel and the second surface of the display panel, wherein the length of the first part of the buffer structure in the normal direction of the first surface is less than or equal to The length of the second surface can achieve the visual effect of a very narrow frame, and can avoid light leakage at the edge of the display panel.

In order to make the above-mentioned features and advantages of the present invention more obvious and easy to understand, the following embodiments are given and described in detail with the accompanying drawings as follows.

100, 100B, 100C: Display device

110: Display panel

111: Side glue

112: First Surface

113: Shading pieces

114: Second Surface

116: Third Surface

115: Color filter substrate

117: Active array substrate

118: liquid crystal layer

120, 120C: frame

122, 122C: Outer frame

1221: Side

123C: Middle frame

124, 124C: Backplane

130, 130B: Buffer structure

131, 131B: Part 1

132, 132B: Part II

140, 140C: Backlight module

142: Substrate

144: Optical film

150, 150C: the first bonding layer

151, 151C: first side

152: Second Side

160, 160C: Second bonding layer

C1, C2, C3: connection surface

L1, L2: length

T: Gap

X, Y, Z: direction

FIG. 1 is a schematic cross-sectional view of a display device according to an embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view of a display device according to another embodiment of the present invention.

3 is a schematic cross-sectional view of a display device according to another embodiment of the present invention.

The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

In the drawings, the thickness of layers, films, panels, regions, etc., are exaggerated for clarity. The same reference numerals refer to the same elements throughout the specification. It will be understood that when an element such as a layer, film, region or substrate is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element, or Intermediate elements may also be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. As used herein, "connected" may refer to a physical and/or electrical connection. Furthermore, "electrically connected" or "coupled" may refer to the existence of other elements between the two elements.

Furthermore, relative terms such as "lower" or "bottom" and "upper" or "top" may be used herein to describe one element's relationship to another element, as shown in the figures. It should be understood that relative terms are intended to encompass different orientations of the device in addition to the orientation shown in the figures. For example, if the device in one of the figures is turned over, elements described as being on the "lower" side of other elements would then be oriented on "upper" sides of the other elements. Thus, the exemplary term "lower" may include an orientation of "lower" and "upper", depending on the particular orientation of the figures. Similarly, if the device in one of the figures is turned over, elements described as "below" or "beneath" other elements would then be oriented "above" the other elements. Thus, the exemplary terms "above" or "below" can include above square and below orientation.

As used herein, "about", "approximately", or "substantially" includes the stated value and the average value within an acceptable deviation of the particular value as determined by one of ordinary skill in the art, considering the measurement in question and the A specified amount of measurement-related error (ie, a limitation of the measurement system). For example, "about" can mean within one or more standard deviations of the stated value, or within ±30%, ±20%, ±10%, ±5%. Furthermore, as used herein, "about", "approximately" or "substantially" may be used to select a more acceptable range of deviation or standard deviation depending on optical properties, etching properties or other properties, and not one standard deviation may apply to all properties. .

Exemplary embodiments are described herein with reference to cross-sectional illustrations that are schematic illustrations of idealized embodiments. Accordingly, variations in the shapes of the illustrations as a result of, for example, manufacturing techniques and/or (and/or) tolerances are expected. Accordingly, the embodiments described herein should not be construed as limited to the particular shapes of regions as shown herein, but rather include deviations in shapes resulting from, for example, manufacturing. For example, regions illustrated or described as flat may typically have rough and/or nonlinear features. Additionally, the acute angles shown may be rounded. Thus, the regions illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the precise shape of a region and are not intended to limit the scope of the claims.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be construed as having meanings consistent with their meanings in the context of the related art and the present invention, and are not to be construed as idealized or excessive formal meaning meaning, unless expressly defined as such herein.

The X direction, the Y direction, and the Z direction are marked in the drawing to show the arrangement relationship of the components in the drawing. The X direction, the Y direction, and the Z direction intersect with each other, but are not limited to be orthogonal to each other. FIG. 1 is a schematic cross-sectional view of a display device according to an embodiment of the present invention. Please refer to FIG. 1 , in this embodiment, the display device 100 includes a display panel 110 , a frame 120 and a buffer structure 130 . The display panel 110 has a first surface 112 , a second surface 114 and a third surface 116 , the first surface 112 and the third surface 116 are opposite to each other, and the second surface 114 is connected to the first surface 112 and the third surface 116 between. The display panel 110 is connected to the frame 120 . The frame 120 covers the second surface 114 and the third surface 116 of the display panel 110 , and exposes the first surface 112 , which is, for example, a display surface.

Here, the normal direction of the second surface 114 is different from the normal direction of the first surface 112 and is also different from the normal direction of the third surface 116 . In some embodiments, the normal directions of the first surface 112 and the third surface 116 may be parallel to each other, but not limited thereto. For example, the first surface 112 and the third surface 116 are respectively a plane parallel to the X direction-Y direction, and the second surface 114 is a plane parallel to the Y direction-Z direction. In other embodiments, the components disposed on the second surface 114 can be applied to other second surfaces, for example, the second surface parallel to the plane of the X direction-Z direction.

In some embodiments, the display panel 110 is, for example, a liquid crystal display panel, but not limited thereto. The display device 100 of the present embodiment further includes a backlight module 140 accommodated in the frame 120 to provide a (surface) light source (not shown) required by the display panel 110 . The backlight module 140 is disposed below the display panel 110 . The backlight module 140 includes a substrate 142 and an optical film 144 disposed on the substrate 142 . The optical film 144 is disposed between the substrate 142 and the third surface 116 . For example, the display panel 110 includes a color filter substrate 115, an active array substrate 117, a liquid crystal layer 118, and the like. The substrate 142 includes glass, and the optical film 144 includes a diffuser sheet, a brightness enhancement sheet, etc., but not limited thereto. In this embodiment, a sub-millimeter light emitting diode (Mini LED) array (not shown) is disposed on the backplane 124, but not limited thereto. In some embodiments, the backlight module 140 may be a direct type or an edge type, which is not limited to the above.

Specifically, the frame 120 includes an outer frame 122 and a back bezel 124 , and the outer frame 122 is assembled to the back bezel 124 . In some embodiments, the material of the outer frame 122 is aluminum, but not limited thereto.

In order to prevent the light of the light source from being emitted to the outside through the edge of the display panel (ie, the gap T between the outer frame 122 and the second surface 114 ) to cause light leakage. The buffer structure 130 of this embodiment is located between the outer frame 122 and the second surface 114 of the display panel 110 to fill the gap T. The buffer structure 130 may be adhered to the outer frame 122, or to the second surface 114 of the display panel 110, or, the buffer structure 130 may be adhered to both or none of the above, which is not the case in the present invention. limited. As long as the left and right sides of the buffer structure 130 are in close contact with the outer frame 122 and the display panel 110 side, respectively, to avoid light leakage, it is within the scope of the present invention. Since the buffer structure 130 includes a light-shielding material, light can be effectively blocked to avoid light leakage. In addition, in some embodiments, the display panel 110 further includes a side glue 111 and a light shielding member 113 , which can prevent the light of the light source from being emitted to the outside through the second surface 114 of the display panel 110 causing light leakage. Here, the light shielding member 113 is, for example, a black matrix.

In particular, the buffer structure 130 of this embodiment includes a first part 131 and a second part 132 which are connected to each other. The first portion 131 is closer to the first surface 112 than the second portion 132 is. The first part 131 and the second part 132 are side by side in the normal direction (eg, the X direction) of the second surface 114 . In other words, the first portion 131 and the second portion 132 are strip-shaped and continuously arranged along the normal direction (eg, the Z direction) of the first surface 112 . In addition, the first part 131 in this embodiment is white glue, so the part of the first part 131 exposed to the outside can appear to be integrated with the display area, and has the visual effect of extending the display surface to achieve the effect of extremely narrow frame.

Further, the display device 100 further includes a first bonding layer 150 and a second bonding layer 160 . The first bonding layer 150 has a first surface 151 and a second surface 152 adjacent thereto. The third surface 116 of the display panel 110 is bonded to the first surface 151 of the first bonding layer 150 , so that the display panel 110 is bonded to the optical film 144 and the substrate 142 . The second bonding layer 160 is interposed between the substrate 142 and the bearing surface of the outer frame 122 to fix the display panel 110 , the optical film 144 and the substrate 142 on the outer frame 122 . Here, the first bonding layer 150 and the second bonding layer 160 are, for example, water glue or double-sided tape, but not limited thereto.

In this embodiment, the second part 132 of the buffer structure 130 is connected to the second surface 152 of the first bonding layer 150 , and the second part 132 extends to the side 1221 of the substrate 142 and the optical film 144 facing the outer frame 122 , but The present invention is not limited to this. In other embodiments, the second portion 132 may also continue to extend downward to the bearing surface of the outer frame 122 .

In this embodiment, the lower end of the first portion 131 is in direct contact with the upper end of the second portion 132 to define a connection surface C1 between the first portion 131 and the second portion 132 . In the normal direction (eg, the X direction) of the second surface 114 , the connection surface C1 is located within the orthographic projection range of the outer frame 122 of the display panel 110 .

In this embodiment, the length L1 of the first portion 131 of the buffer structure 130 in the normal direction (eg, the Z direction) of the first surface 112 is smaller than the length L2 of the second surface 114 . In other words, the connection surface C1 between the first part 131 and the second part 132 is higher than the first surface 151 of the first bonding layer 150 to avoid light leakage outside the display area, but the invention is not limited thereto.

FIG. 2 is a schematic cross-sectional view of a display device according to another embodiment of the present invention. Referring to FIG. 2 , in this embodiment, the display device 100B is slightly different from the display device 100 of FIG. 2 , the main difference being: the connection surface C2 between the first part 131B and the second part 132B of the buffer structure 130B. Specifically, the connection surface C2 is aligned with the first surface 151 of the first bonding layer 150 , and can block unexpected light from the backlight module 140 below the display panel.

Please continue to refer to FIG. 1 , in this embodiment, in order to highlight the extremely narrow frame, the exposed first portion 131 needs to be light-colored (for example, white, pink, light yellow, light green, etc.) to avoid the appearance from being different from black. The shading member 113 is the same. The advantage of this is that the first part 131 of the buffer structure 130 and the display area of the display panel 110 appear to be integrated, and can have the visual effect of extending the display surface. However, in other embodiments, the color of the first part can be selected in accordance with the frame of the display panel, which is not limited thereto. On the other hand, for the internal shading requirements, the second part 132 needs to be dark (eg Such as black, dark blue, dark brown, dark purple, etc.) materials. That is to say, the buffer structure 130 of this embodiment is a combination of dark-colored colloid and light-colored colloid, two color colloids.

In this embodiment, in the normal direction of the second surface 114 (for example, the X direction), the thickness of the first part 131 is equal to the thickness of the second part 132 , the thickness of the first part 131 is about 1 mm, and the thickness of the second part 132 The thickness is, for example, about 1 mm. In the normal direction of the first surface 112 (eg, the Z direction), the length of the first portion 131 is about 1 mm, and the length of the second portion 132 is about 3 mm, but the invention is not limited thereto. In some embodiments, the Young's coefficient of the buffer structure 130 is less than 20 MPa, but the invention is not limited thereto.

In detail, in some embodiments, the light absorptivity of the second portion 132 is greater than that of the first portion 131 . In some embodiments, the optical density (OD) of the second portion 132 is greater than the optical density of the first portion 131 . For example, the materials of the first part 131 and the second part 132 are both modified silicon, but the optical density (OD) of the first part 131 and the second part 132 can be made different by doping. The optical density of 131 is greater than 0.7, and the optical density of the second portion 132 is greater than 3, but the present invention is not limited thereto. The advantage of using denatured silicone as the material in this embodiment is that no additional light source equipment (such as a UV light source) is required and the glue line is relatively soft. In addition, the OD of the denatured silicone can be adjusted more widely, so that the first part 131 can be made shallow. The color is, for example, white, and the second portion 132 is dark, such as black.

In some embodiments, the material of the first portion 131 of the buffer structure 130 The material of the second part 132 includes, for example, silicone glue, UV glue, PUR glue, modified silicone glue, or foam. The material of the first portion 131 of the buffer structure 130 may be different from the material of the second portion 132 . For example, the first part 131 is, for example, light-colored UV glue, and the second part 132 is, for example, black modified silicone rubber or foam, but not limited thereto.

Under the above configuration, the first part 131 of the buffer structure 130 can achieve the effect of a very narrow frame, and the second part 132 of the buffer structure 130 can effectively block light from passing through the substrate 142 , the optical film 144 , and the first bonding layer 150 , the side light leakage generated by the second bonding layer 160 to the outside. Therefore, the display device 100 of this embodiment can avoid light leakage between the display panel 110 and the frame 120 while realizing a narrow frame or no frame.

3 is a schematic cross-sectional view of a display device according to another embodiment of the present invention. Referring to FIG. 3 , in this embodiment, the display device 100C is slightly different from the display device 100 of FIG. 2 , and the main difference lies in the assembly form of the frame 120C. Specifically, the frame 120C includes an outer frame 122C, a middle frame 123C and a backplane 124C, the substrate 142 and the optical film 144 are bonded to the middle frame 123C by the second bonding layer 160C, and the display panel 110 is bonded by the first bonding layer 150C It is directly engaged with the middle frame 123C.

In this embodiment, the first part 131C is white glue, and the second part 132C is black glue. Since the first portion 131C is light-colored, it can be avoided to be the same in appearance as the black shading member 113 . In this way, the display area of the display panel 110 and the first part 131 of the buffer structure 130 appear to be integrated, without the illusion of enlarging the frame of the display panel 110 , thereby achieving the effect of a very narrow frame.

In this embodiment, the distance between the first part 131C and the second part 132C The connection surface C3 is higher than the first surface 151C of the first bonding layer 150C, and can block unexpected light from the backlight module 140C under the display panel, but in other embodiments, the first part 131C and the second part 132C are between the The connecting surface C3 between the two can also be the first surface 151C of the first bonding layer 150C, which is not limited in the present invention.

To sum up, in the display device of the present invention, the buffer structure includes a first part and a second part. In some embodiments, the appearance of the BM can be avoided due to the white glue of the first portion. In this way, the display area of the display panel and the first part of the buffer structure appear to be integrated, and the visual effect of extending the display surface can be achieved, thereby achieving a borderless effect. In addition, since the connection surface between the first part and the second part of the buffer structure is higher than or flush with the first surface of the first bonding layer, and the second part is made of black glue, it can block the backlight mold from below the display panel. Unexpected light from groups to avoid light leakage problems at the edges of the display panel.

Although the present invention has been disclosed above by the embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, The protection scope of the present invention shall be determined by the scope of the appended patent application.

100: Display device

110: Display panel

111: Side glue

112: First Surface

113: Shading pieces

114: Second Surface

116: Third Surface

115: Color filter substrate

117: Active array substrate

118: liquid crystal layer

120: Frame

122: Outer frame

1221: Side

124: Backplane

130: Buffer structure

131: Part One

132: Part Two

140: Backlight module

142: Substrate

144: Optical film

150: First bonding layer

151: The first side

152: Second Side

160: Second bonding layer

C1: Connection surface

L1, L2: length

T: Gap

X, Y, Z: direction

Claims (9)

A display device, comprising: a display panel having an adjacent first surface and a second surface, wherein the normal direction of the first surface is different from the normal direction of the second surface; a frame covering the display the second surface of the panel, exposing the first surface; and a buffer structure located between the frame and the second surface of the display panel, the buffer structure including a first part and a second part connected, the The first part is closer to the first surface than the second part, wherein the length of the first part of the buffer structure in the normal direction of the first surface is less than or equal to the length of the second surface, the first part White glue is included, and the second portion includes black glue. The display device of claim 1, wherein the first portion and the second portion are side by side in the normal direction of the second surface. The display device according to claim 1, wherein a connection surface between the first part and the second part is located within an orthographic projection range of the display panel to the frame along the normal direction of the second surface. The display device of claim 1, wherein the light absorptivity of the second portion is greater than the light absorptivity of the first portion. The display device of claim 1, wherein in the normal direction of the second surface, the thickness of the first portion is equal to the thickness of the second portion, and the optical density of the second portion is greater than the optical density of the first portion . The display device of claim 5, wherein the optical density of the first portion is greater than 0.7, and the optical density of the second portion is greater than 3. The display device of claim 1, wherein the material of the first part and the material of the second part of the buffer structure respectively comprise silicone glue, UV glue, PUR glue or foam. The display device according to claim 1, wherein the display panel has a third surface opposite to the first surface, the second surface is located between the first surface and the third surface, and the display device further comprises a The bonding layer has an adjacent first surface and a second surface, the first surface is disposed on the third surface, and the second part of the buffer structure extends to the second surface. The display device of claim 8, further comprising a substrate and an optical film, the optical film is disposed between the substrate and the third surface, the second portion of the buffer structure extends to the substrate and the third surface The optical film faces the side of the frame.

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