阅读说明：本技术 弯曲显示设备 (Curved display device ) 是由 朴东镇 陈柄辰 崔钟显 于 2020-02-13 设计创作，主要内容包括：一种弯曲显示设备能够减小由用户视觉识别的边框的尺寸,该弯曲显示设备包括：具有弯曲形状的支撑框架；和设置在所述支撑框架上并具有弯曲形状的显示面板。所述支撑框架弯曲成扇形的弧的形状,并且所述支撑框架的第一侧表面平行于所述扇形的第一半径。(A curved display device capable of reducing a size of a bezel visually recognized by a user, the curved display device comprising: a support frame having a curved shape; and a display panel disposed on the support frame and having a curved shape. The support frame is curved in the shape of an arc of a sector, and a first side surface of the support frame is parallel to a first radius of the sector.)

1. A curved display device, comprising:

a support frame having a curved shape; and

a display panel disposed on the support frame and having a curved shape,

wherein the support frame is curved in the shape of an arc of a sector and the first side surface of the support frame is parallel to a first radius of the sector.

2. The curved display device of claim 1, wherein a second side surface of the support frame opposite the first side surface is parallel to a second radius of the fan shape.

3. The curved display device according to claim 2, wherein an angle between an extension line of the first side surface and an extension line of the second side surface is equal to an angle of the fan shape.

4. The curved display device of claim 1, wherein an angle between the first side surface and a display surface of the display panel is an obtuse angle.

5. The curved display apparatus of claim 4, wherein an angle between the first side surface and the display surface of the display panel is in a range of 121.85 degrees to 127.85 degrees.

6. The curved display device of claim 1, wherein a distance between the first side surface and a side surface of the display panel adjacent to the first side surface is 1.6 mm.

7. The curved display device of claim 2, wherein an angle between the second side surface and a display surface of the display panel is an obtuse angle.

8. The curved display apparatus of claim 7, wherein an angle between the second side surface and the display surface of the display panel is in a range of 121.85 degrees to 127.85 degrees.

9. The curved display device of claim 2, wherein a distance between the second side surface and a side surface of the display panel adjacent to the second side surface is 1.6 mm.

10. The curved display device of claim 1, further comprising:

a light guide plate disposed under the display panel; and

and a light source disposed on at least one side of the light guide plate.

Technical Field

Embodiments of the present invention relate to a display device, and more particularly, to a curved display device capable of reducing the size of a bezel visually recognized by a user.

Background

A Liquid Crystal Display (LCD) device is one of the most widely used types of Flat Panel Display (FPD) devices. Such an LCD device includes two substrates on which field generating electrodes are formed and a liquid crystal layer interposed therebetween. The LCD device is a display device that adjusts the amount of transmitted light by applying a voltage to field generating electrodes and rearranging liquid crystal molecules of a liquid crystal layer.

It should be appreciated that this background of the technical section, which is intended to provide a useful background for understanding the technology and is thus disclosed herein, may include ideas, concepts or insights not part of the known or understood prior to the corresponding actual filing date of the subject matter disclosed herein by those of ordinary skill in the art.

Disclosure of Invention

Aspects of embodiments of the present invention may be directed to a curved display device capable of reducing the size of a bezel visually recognized by a user.

According to an embodiment, a curved display device includes: a support frame having a curved shape; and a display panel disposed on the support frame and having a curved shape. The support frame is curved in the shape of an arc of a sector, and a first side surface of the support frame is parallel to a first radius of the sector.

A second side surface of the support frame opposite the first side surface may be parallel to a second radius of the fan shape.

An angle between an extension line of the first side surface and an extension line of the second side surface may be substantially equal to an angle of the fan shape.

An angle between the first side surface and a display surface of the display panel may be an obtuse angle.

An angle between the first side surface and the display surface of the display panel may be in a range of about 121.85 degrees to about 127.85 degrees.

A distance between the first side surface and a side surface of the display panel adjacent to the first side surface may be about 1.6 mm.

An angle between the second side surface and the display surface of the display panel may be an obtuse angle.

An angle between the second side surface and the display surface of the display panel may be in a range of about 121.85 degrees to about 127.85 degrees.

A distance between the second side surface and a side surface of the display panel adjacent to the second side surface may be about 1.6 mm.

The curved display device may further include: a light guide plate disposed under the display panel; and a light source disposed at least one side of the light guide plate.

The foregoing is illustrative only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent by reference to the drawings and the following detailed description.

Drawings

A more complete understanding of the embodiments will become apparent by describing in detail embodiments thereof with reference to the accompanying drawings, wherein:

fig. 1 is a perspective view illustrating a curved display device according to an embodiment;

fig. 2 is a view illustrating the curved display device of fig. 1 viewed from above;

FIG. 3 is a cross-sectional view taken along line I-I' in FIGS. 1 and 2;

FIG. 4 is a cross-sectional view taken along line II-II' of FIG. 1;

FIG. 5 is an enlarged view of area A of FIG. 3;

fig. 6 is an enlarged view of region B of fig. 3; and

fig. 7 is a view for explaining an angle between the first side surface and the second side surface of the support frame.

Detailed Description

Embodiments will now be described more fully hereinafter with reference to the accompanying drawings. Although the present invention can be modified in various ways and has several embodiments, the embodiments are illustrated in the drawings and will be mainly described in the specification. However, the scope of the embodiment is not limited to the embodiment, and should be construed to include all changes, equivalents, and substitutions included in the spirit and scope according to the embodiment.

In the drawings, the thickness of various layers and regions are illustrated in an exaggerated manner for clarity and ease of description thereof. When a layer, region or panel is referred to as being "on" another layer, region or panel, it can be directly on the other layer, region or panel, or intervening layers, regions or panels may be present. In contrast, when a layer, region or panel is referred to as being "directly on" another layer, region or panel, there may be no intervening layers, regions or panels between them. Further, when a layer, region or panel is referred to as being "under" another layer, region or panel, it can be directly under the other layer, region or panel or intervening layers, regions or panels may be present. In contrast, when a layer, region or panel is referred to as being "directly under" another layer, region or panel, there may be no intervening layers, regions or panels between them.

For ease of description, spatially relative terms "below," "beneath," "lower," "above," "upper," and the like may be used herein to describe one element or component's relationship to another element or component as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, where a device illustrated in the figures is turned over, a device that is "below" or "beneath" another device may be oriented "above" the other device. Accordingly, the exemplary term "below" may include both a lower position and an upper position. The device may also be oriented in other directions and the spatially relative terms may therefore be interpreted differently depending on the orientation.

Throughout the specification, when an element is referred to as being "connected" to another element, the element is "directly connected" to the other element or "indirectly connected" to the other element with one or more intervening elements interposed therebetween. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. Accordingly, a "first element" discussed below can be termed a "second element" or a "third element," and "second element" and "third element" can be similarly termed without departing from the teachings herein.

As used herein, "about" or "approximately" includes the stated value and indicates that the value is within an acceptable range of deviation of the stated value as determined by one of ordinary skill in the art taking into account the measurement in question and the error associated with the measurement of the particular quantity (i.e., the limitations of the measurement system). For example, "about" may mean within one or more standard deviations, or within ± 30%, 20%, 10%, 5% of the stated value.

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 interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Some portions that are not related to the description may not be provided in order to specifically describe the embodiments, and the same reference numerals denote the same elements throughout the specification.

Hereinafter, a curved display device according to an embodiment will be described in detail with reference to fig. 1 to 7.

Fig. 1 is a perspective view illustrating a curved display device according to an embodiment, fig. 2 is a view illustrating the curved display device of fig. 1 viewed from above, fig. 3 is a sectional view taken along a line I-I 'in fig. 1 and 2, and fig. 4 is a sectional view taken along a line II-II' in fig. 1.

The curved display apparatus 1000 according to the embodiment is a curved display apparatus 1000 curved in an arc shape with respect to a central portion of the display panel 100, as shown in fig. 1 and 2. In other words, the display device according to the present invention is a curved display device 1000 in which the opposite sides are arcuately curved with respect to the central portion of the display area of the display panel 100 in the curved display device 1000. Hereinafter, unless otherwise specified, all components of the curved display device 1000 include materials having a characteristic capable of being curved. In an embodiment, the curved display device 1000 may be supported by a support 150.

The curved display device 1000 according to the embodiment includes a bottom cover 111, a reflective plate 900, a light guide plate 700, an optical sheet 201, a light source unit 801, a support frame 311, an adhesive 500, a display panel 100, a top cover 600, and a protective cover 611, as shown in fig. 3 and 4. Each of the above listed components has an arc-shaped curved shape corresponding to the curved shape of the curved display device 1000. As used herein, the reflection plate 900, the light guide plate 700, the optical sheet 201, the light source unit 801, and the support frame 311 are included in the backlight unit. In one embodiment, the display panel 100 and the backlight unit are assembled in a laminated state to form a display module. The display module may further include a top cover 600 and a bottom cover 111 for protecting and fixing the display panel 100 and the backlight unit, and a driving circuit board (not shown) for driving the display panel 100.

The bottom cover 111 has an accommodation space therein. The reflection plate 900, the light guide plate 700, the optical sheet 201, and the light source unit 801 may be disposed in the receiving space. In order to secure the receiving space, the bottom cover 111 may include a base portion 111a and a plurality of side portions 111 b. For example, the base 111a may have a quadrangular shape, and each of the above-described side portions 111b protrudes from each edge of the base 111a by a predetermined height. Edges of the side portions 111b adjacent to each other may be connected to each other. The space defined by being surrounded by the side portion 111b and the base portion 111a may be the above-described accommodation space.

The light source unit 801 generates light. The light source unit 801 may include a light source printed circuit board 801a and at least one light source 801b, as shown in fig. 4. In such an embodiment, the light source printed circuit board 801a has an arc-shaped bent shape.

Although not shown, one surface of the light source printed circuit board 801a may be divided into at least one mounting region and a wiring region. In the case where two or more light sources 801b are provided, the light sources 801b are respectively provided at the mounting areas, and a plurality of cables for transmitting driving power to the light sources 801b are provided at the wiring areas. The aforementioned driving power is generated at an external power source (not illustrated) and then applied to the plurality of cables through the connector 480. One edge of the light source printed circuit board 801a may pass through the base portion 111a of the bottom cover 111 and be exposed to the outside of the bottom cover 111. The aforementioned connector 480 may be disposed at one edge of the light source printed circuit board 801a exposed to the outside of the bottom cover 111.

The light source 801b emits light. The light source 801b is disposed on the light source printed circuit board 801 a. In one embodiment, the light source 801b may be disposed on at least one side of the light guide plate 700. The light source 801b may be a light emitting package including at least one Light Emitting Diode (LED). For example, one light emitting package may include therein a red LED for emitting red light, a green LED for emitting green light, and a blue LED for emitting blue light. The light emitting package combines three hues to produce white light. In another embodiment, the light emitting package may include only blue LEDs among the above-described color LEDs. In such embodiments, a fluorescent material (e.g., phosphor) for converting blue light into white light may be disposed at the light emitting portion of the blue LED. Light emitted from the light source 801b is incident to the light guide plate 700.

As shown in fig. 3 and 4, the light guide plate 700 may have a polyhedral shape curved in an arc shape. One surface facing the light source 801b among the plurality of surfaces included in the light guide plate 700 may be defined as the light incident surface 122. The light incident surface 122 may have an arc-shaped curved shape. The light emitted from the light source 801b is incident to the light incident surface 122 and then travels toward the inside of the light guide plate 700. The light guide plate 700 totally reflects the light that has entered the light guide plate 700 and guides the light toward the display area of the display panel 100. In an embodiment, although not shown, in order to improve the reflectivity of the light guide plate 700, a plurality of scattering patterns may be further provided at the lower outer surface of the light guide plate 700. In such an embodiment, the scattering patterns may be arranged such that their intervals gradually increase as they are positioned farther from the light incident surface 122 of the light guide plate 700.

The light guide plate 700 may include a material having light transmittance to effectively guide light, for example, acrylic resin such as polymethyl methacrylate (PMMA) and Polycarbonate (PC).

The reflective plate 900 may be disposed under the light guide plate 700. For example, the reflection plate 900 may be disposed between the base portion 111a of the bottom cover 111 and the light guide plate 700. The reflection plate 900 reflects light that has been emitted to the outside through the lower outer surface of the light guide plate 700 so that the light can be returned to the light guide plate 700, and the light loss rate can be substantially minimized.

The optical sheet 201 serves to diffuse and collimate the light guided from the light guide plate 700. The optical sheet 201 may be disposed between the light guide plate 700 and the display panel 100, as shown in fig. 3 and 4. The optical sheet 201 may include a diffusion sheet 201a, a light-collimating sheet 201b, and a protective sheet 201 c. The diffusion sheet 201a, the light-collimating sheet 201b, and the protective sheet 201c may be sequentially stacked on the light guide plate 700 in the listed order. In another embodiment, the optical sheet 201 may include a diffusion sheet 201a and a dual brightness enhancement film on the diffusion sheet 201 a.

The diffusion sheet 201a serves to diffuse the light guided from the light guide plate 700 so as to substantially prevent the light from being partially condensed.

The light collimating sheet 201b is disposed on the diffusion sheet 201 a. The light-collimating sheet 201b serves to collimate the light diffused by the diffusion sheet 201a in a direction perpendicular to the display panel 100. For this, the triangular prisms may be arranged in a predetermined arrangement on the surface of the light-collimating sheet 201 b.

The protective sheet 201c is disposed on the light collimating sheet 201 b. The protective sheet 201c serves to protect the surface of the light collimating sheet 201b and diffuse light to achieve uniform light distribution. The light passing through the protective sheet 201c is provided to the display panel 100.

The support frame 311 supports the display panel 100 and the top cover 600 in a state of being fixed to the bottom cover 111, and also maintains a uniform distance between the display panel 100 and the optical sheets 201. For this, the support frame 311 may have a quadrangular frame shape including a first support part 311a, a second support part 311b, and a side part 311 c.

The first support part 311a is provided on the plurality of side parts 111b to support the top cover 600 covering the first support part 311a from above.

The second supporting portion 311b extends from the inner edge of the first supporting portion 311a toward the optical sheet 201. The height of the second support portion 311b is lower than the height of the first support portion 311 a. A space is provided between the top cover 600 and the second support 311b by a height difference between the second support 311b and the first support 311a, and an edge of the display panel 100 is disposed at the space.

The side portion 311c extends from the lower side surface of the first support portion 311a toward the protective cover 611. For example, the side 311c extends toward the base 611a of the protective cover 611.

The adhesive 500 is disposed between the second supporting portion 311b of the supporting frame 311 and the edge of the display panel 100. The adhesive 500 bonds the support frame 311 and the display panel 100 to each other.

The top cover 600 is disposed on the edge of the display panel 100, the support frame 311, and the side 611b of the protective cover 611. The top cover 600 may include a cover 600a and a side 600 b.

The cover 600a is disposed on the edge of the display panel 100, on the support frame 311, and on the side 611b of the protective cover 611.

The side 600b extends from the lower surface of the cover 600a toward the base 611a of the protective cover 611. The side 600b of the top cover 600 is disposed between the side 611b of the protective cover 611 and the side 311c of the support frame 311.

The display panel 100 receives an image data signal from a system (not illustrated) and receives light from a backlight unit, thereby displaying an image. Although not illustrated, the display panel 100 may include a plurality of pixels, a plurality of switching elements, a plurality of gate lines, and a plurality of data lines connected to the pixels through the plurality of switching elements. The display panel 100 may have a quadrangular shape (e.g., a rectangular shape), as shown in fig. 1. In such embodiments, the two relatively long sides (hereinafter, "long sides") may have an arc-shaped curved shape, and the two relatively short sides (hereinafter, "short sides") may have a straight line shape. Conversely, in another embodiment, the long sides may have a straight shape and the short sides may have an arc-shaped curved shape.

The driving printed circuit board 400 is disposed on the rear surface of the bottom cover 111. The driving printed circuit board 400 may be electrically connected to one edge of the display panel 100. In such an embodiment, the driving printed circuit board 400 may be connected to one edge of the display panel 100 through a data driver (not illustrated). The data driver may supply the aforementioned image data signal to the data lines of the display panel 100 by driving the signal lines of the printed circuit board 400.

The panel driver 450 may be disposed on the driving printed circuit board 400. The panel driver 450 may generate various signals required to drive the display panel 100.

The protective cover 611 is provided on the top cover 600, the support frame 311, the bottom cover 111, the driving printed circuit board 400, and the data driver 450. The protective cover 611 may include a base 611a and a side 611 b.

The base 611a is provided on the top cover 600, the support frame 311, the bottom cover 111, the driving printed circuit board 400, and the data driver 450.

The side portion 611b extends from one edge of the base portion 611a toward the cover portion 600a of the top cover 600.

The fastening part 350 is inserted into a fastening hole defined by the side 600b of the top cover 600, the side 311c of the support frame 311, and the side 111b of the bottom cover 111. The top cover 600 and the support frame 311 may be fixed to the bottom cover 111 by the fastening part 350.

Fig. 5 is an enlarged view of the area a of fig. 3, and fig. 6 is an enlarged view of the area B of fig. 3.

An angle θ 1 between the first side surface 31a of the support frame 311 and the front side of the display panel 100 may be greater than 90 degrees, as shown in fig. 5. For example, an angle θ 1 formed by the first side surface 31a of the support frame 311 and the display surface 10a disposed at the front side of the display panel 100 may be greater than 90 degrees. As a more specific example, an angle θ 1 between the first side surface 31a of the support frame 311 and an imaginary line L1 extending from an edge surface of the display surface 10a adjacent to the first side surface 31a may be greater than 90 degrees. In such an embodiment, the first side surface 31a of the support frame 311 refers to a non-curved surface among edge surfaces of the support frame 311.

As an example, in the case where the size of the display panel 100 is 49 inches, the aforementioned angle θ 1 may be in the range of about 121.85 degrees to about 127.85 degrees. For example, in the case where the size of the display panel 100 is 49 inches, the aforementioned angle θ 1 may be about 124.85 degrees. As another example, in the case where the size of the display panel 100 is 43.4 inches, the aforementioned angle θ 1 may be in a range of about 119.3 degrees to about 125.3 degrees. For example, in the case where the size of the display panel 100 is 43.4 inches, the aforementioned angle θ 1 may be about 122.3 degrees. In such embodiments, the display panel 100 may have a screen aspect ratio of about 32: 9.

An angle θ 2 between the second side surface 31b of the support frame 311 and the front side of the display panel 100 may be greater than 90 degrees, as shown in fig. 6. For example, an angle θ 2 formed by the second side surface 31b of the support frame 311 and the display surface 10b disposed at the front side of the display panel 100 may be greater than 90 degrees. As a more specific example, the angle θ 2 between the second side surface 31b of the support frame 311 and an imaginary line L2 extending from an edge surface of the display surface 10b adjacent to the second side surface 31b may be greater than 90 degrees. In such an embodiment, the second side surface 31b of the support frame 311 refers to a non-curved surface among edge surfaces of the support frame 311. The second side surface 31b is opposite to the first side surface 31 a.

As an example, in the case where the size of the display panel 100 is 49 inches, the aforementioned angle θ 2 may be in the range of about 121.85 degrees to about 127.85 degrees. For example, in the case where the size of the display panel 100 is 49 inches, the aforementioned angle θ 2 may be about 124.85 degrees. As another example, in the case where the size of the display panel 100 is 43.4 inches, the aforementioned angle θ 2 may be in a range of about 119.3 degrees to about 125.3 degrees. In such embodiments, the display panel 100 may have a screen aspect ratio of about 32: 9.

Fig. 7 is a view for explaining an angle between the first side surface 31a and the second side surface 31b of the support frame 311.

As shown in fig. 7, the support frame 311 bent and included in the bent display apparatus 1000 corresponds to an arc of a fan shape, and the first side surface 31a of the support frame 311 is parallel to a first radius r1 of the fan shape, and the second side surface 31b of the support frame 311 is parallel to a second radius r2 of the fan shape. In other words, the first side surface 31a of the support frame 311 coincides with the first radius r1 of the fan shape, and the second side surface 31b of the support frame 311 coincides with the second radius r2 of the fan shape. Accordingly, an angle formed between the extension line of the first side surface 31a and the extension line of the second side surface 31b is substantially the same as the angle θ 3 of the fan shape.

In an embodiment, a center point of the fan shape may correspond to a position of the user, and an angle θ 3 of the fan shape may correspond to a line of sight of the user viewing the curved display device 1000. In such embodiments, the distance between the user and the curved display device 1000 may be about 60 cm. In such an embodiment, since the user's line of sight always coincides with the first and second side surfaces 31a and 31b of the support frame 311, the size w (shown in fig. 5 and 6) of the bezel of the curved display device 1000 may be substantially minimized while maintaining the strength of the curved display device 1000. That is, the distance between the first side surface 31a and the second side surface 31b increases from the front surface portion of the support frame 311 toward the rear surface portion of the support frame 311, thereby increasing the strength of the support frame 311. In this case, when the distance between the first and second side surfaces 31a and 31b is too wide, the size w of the bezel may increase. Accordingly, by adjusting the aforementioned angle to make the user's sight line coincide with the first and second side surfaces 31a and 31b of the support frame 311, the size w of the bezel may be substantially minimized while appropriately maintaining the strength of the support frame 311. As used herein, the size w of the bezel may be defined as a width w between a side surface of the display panel 100 and a side surface of the support frame 311 adjacent to the side surface of the display panel 100. The width w may be, for example, about 1.6 mm.

As set forth above, in a curved display device according to one or more embodiments, the size of a bezel visually recognized by a user may be reduced.

While the present invention has been illustrated and described with reference to embodiments thereof, it will be apparent to those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the embodiments.