TWI823742B - Display device - Google Patents

Abstract

A display device includes at least one substrate and at least one flexible display panel. The substrate has a first arc surface and a second arc surface opposite, two first side surfaces opposite and two second side surfaces opposite. The two first side surfaces and the two second side surfaces are located between the first arc surface and the second arc surface. There is a first side edge at the connection between the two first side surfaces and the first arc surface and the second arc surface respectively. The flexible display panel is disposed on the first arc surface or the second arc surface and extends to at least part of the two first side surfaces. At least one flexible display panel has a arc display area, the arc display area has a single curvature, and an arc axis of the arc display area is parallel to the two first side edges.

Description

display device

The present invention relates to a display device, and in particular to a display device with a curved screen.

As the applications of display devices become increasingly diversified, large display boards used to display public information or advertisements are increasingly used in major exhibition venues or department stores.

Generally speaking, most splicing technologies are arranged with multiple independent displays, so it is still difficult to achieve zero border. In addition, in order to meet the usage requirements, the display may need to have a curved display area. However, existing curved display panels are, for example, made of full-surface Micro Light Emitting Diodes (μLED). However, for large-area displays, the mass transfer of μLEDs still has the problem of low yield, making it difficult to achieve complete large-area displays without defective pixels.

The present invention provides a display device that can reduce the presence of splicing seams of a curved screen and improve the yield rate.

The display device of the present invention includes at least one substrate and at least one flexible display panel. The substrate has a first arcuate surface and a second arcuate surface that are opposite to each other, two first and second side surfaces that are opposite to each other, and the two first and second side surfaces are located between the first and second arcuate surfaces. There is a first side edge at the connection between the two first side surfaces and the first arc surface and the second arc surface respectively. The flexible display panel is arranged on the first curved surface or the second curved surface and extends to at least part of the two first side surfaces. At least one flexible display panel has a curved display area, and the curved display area has a single curvature. The arc axis of the surface display area is parallel to the two first side edges.

In an embodiment of the present invention, the above-mentioned first side edge is a straight edge.

In an embodiment of the present invention, the connection between the two second side surfaces and the first arc surface and the second arc surface respectively has a second side edge, and the second side edge is an arc edge.

In an embodiment of the present invention, the above-mentioned first arc surface is a convex arc surface.

In an embodiment of the present invention, the second arc surface is a concave arc surface.

In an embodiment of the present invention, the first arc surface and the second arc surface are concentric arcs.

In an embodiment of the present invention, the number of the at least one substrate and the at least one flexible display panel is multiple, and the flexible display panels correspond to the substrates one by one.

In one embodiment of the present invention, the above-mentioned substrates are connected in series, the first sides between two adjacent substrates are opposite to each other, and these flexible display panels are jointly spliced to form a combined screen.

In an embodiment of the present invention, the material of the at least one substrate includes metal or plastic.

Based on the above, in the display device of the present invention, the flexible display panel is arranged on the curved surface of the substrate, so that the curved display area has a single curvature, and the arc axis of the curved display area is parallel to the two first sides of the substrate edge. In this way, the manufacturing process of the display device is simple and the local stress generated at the corners of the flexible display panel is small without causing component breakage or damage.

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

The 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 invention.

In the drawings, the thickness of layers, films, panels, regions, etc., are exaggerated for clarity. Throughout this specification, the same reference numbers refer to the same elements. 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 physical and/or electrical connection. Furthermore, "electrical connection" or "coupling" may mean the presence of other components between the two components.

Additionally, 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 illustrated in the Figures. It will be understood that relative terms are intended to encompass different orientations of the device in addition to the orientation illustrated in the figures. For example, if the device in one of the figures is turned over, elements described as "below" other elements would then be oriented "above" the other elements. Thus, the exemplary term "lower" may include both "lower" and "upper" orientations, depending on the particular orientation of the drawing. 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 "upper" or "lower" may include both upper and lower orientations.

As used herein, "about," "approximately," or "substantially" includes the stated value and the average within an acceptable range of deviations from the particular value as determined by one of ordinary skill in the art, taking into account the measurements in question and the A specific amount of error associated with a measurement (i.e., the limitations of the measurement system). For example, "about" may mean within one or more standard deviations of the stated value, or within ±30%, ±20%, ±10%, ±5%. Furthermore, "about", "approximately" or "substantially" used in this article can be used to select a more acceptable deviation range or standard deviation based on optical properties, etching properties or other properties, and one standard deviation does not apply to all properties. .

Example embodiments are described herein with reference to cross-sectional illustrations that are schematic illustrations of idealized embodiments. Accordingly, variations in the shapes illustrated in the illustrations are to be expected as a result of, for example, manufacturing techniques and/or tolerances. Thus, embodiments described herein should not be construed as limited to the particular shapes of regions illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. For example, regions shown or described as flat may typically have rough and/or non-linear characteristics. Additionally, the acute angles shown may be rounded. Accordingly, the areas shown in the figures are schematic in nature and their shapes are not intended to illustrate the precise shapes of the areas 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 to have meanings consistent with their meanings in the context of the relevant technology and the present invention, and are not to be construed as idealistic or excessive Formal meaning, unless expressly defined as such herein.

FIG. 1A is a schematic front view of a display device according to an embodiment of the present invention. FIG. 1B is a perspective view of the display device of FIG. 1A . Please refer to FIG. 1A . The display device 100 of this embodiment includes a substrate 110 and a flexible display panel 120 . The substrate 110 has an opposite first arc surface 111 and a second arc surface 112 and two opposite first side surfaces 113 . In this embodiment, the substrate 110 is, for example, a rigid substrate, and the material is, for example, glass, quartz, metal, plastic or other appropriate materials, but the invention is not limited thereto.

In this embodiment, the flexible display panel 120 is configured on the substrate 110 . For example, the flexible display panel 120 is attached to the first arc surface 111 and extends to at least part of the two first side surfaces 113 . In one embodiment, the method of disposing the flexible display panel 120 on the substrate 110 is, for example, to first manufacture the flexible display panel 120 and then attach the flexible display panel 120 to the substrate 110 . This is not the case in the present invention. is limited.

In this embodiment, the portion of the flexible display panel 120 extending to the two first side surfaces 113 is, for example, a wiring area or a bonding area to avoid being exposed and affecting the viewing experience.

In this embodiment, the flexible display panel 120 is, for example, a micro-light-emitting diode display panel, an organic light-emitting diode display panel, or other suitable display panels, but the invention is not limited thereto. For example, the flexible display panel 120 includes a base plate, a driving chip, a driving circuit layer, a display medium, and the like. The driving circuit layer is, for example, a thin film transistor (TFT) used to drive pixels, and the display medium is electrically connected to the driving circuit layer. The driver chip can be used to provide electrical signals required by the display media on the backplane. The display medium is, for example, a Micro LED, but is not limited thereto.

Please refer to FIG. 1B . In this embodiment, the substrate 110 also has two second side surfaces 114 located between the two first side surfaces 113 , and the two second side surfaces 114 are opposite to each other. The two first side surfaces 113 and the two second side surfaces 114 are located between the first arc surface 111 and the second arc surface 112 . For example, the first arc surface 111 and the second arc surface 112 are, for example, the top surface and the bottom surface of the substrate 110 , and the two first side surfaces 113 and the two second side surfaces 114 are, for example, the side surfaces of the substrate 110 . However, the present invention does not take this as an example. limit.

Specifically, the connection point (for example, the corner) between the two first side surfaces 113 and the first arc surface 111 has a first side edge E1, and the first side edge E1 is a straight edge. There is a second side edge E2 at the connection point between the two second side surfaces 114 and the first arc surface 111 and the second arc surface 112 respectively (for example, at the corner), and the second side edge E2 is an arc edge.

In this embodiment, the first arc surface 111 is a convex arc surface, the second arc surface 112 is a concave arc surface, and the first arc surface 111 and the second arc surface 112 are concentric arcs. In this embodiment, the flexible display panel 120 has a curved display area S1, the curved display area S1 has a single curvature, and the curved display area S1 has an arc axis C1. Furthermore, in this embodiment, the two first side surfaces 113 extend (schematically shown with dotted lines) to form an intersection, and the intersection has an arc axis C1 of the arcuate display area S1.

In this embodiment, the arc axis C1 is parallel to the two first side edges E1. The advantage of this design is that the manufacturing process is simple and the flexible display panel 120 generates less local stress at the corners without causing component breakage or damage.

Under the above configuration, the display device 100 has a convex curved screen with a single curvature. The structure of the display device 100 is stable and not easily deformed.

Other examples will be listed below as illustrations. It must be noted here that the following embodiments follow the component numbers and part of the content of the previous embodiments, where the same numbers are used to represent the same or similar elements, and descriptions of the same technical content are omitted. For descriptions of omitted parts, reference may be made to the foregoing embodiments and will not be repeated in the following embodiments.

FIG. 2A is a schematic front view of a display device according to another embodiment of the present invention. FIG. 2B is a perspective view of the display device of FIG. 3A. Please refer to FIG. 2A and FIG. 2B. In this embodiment, the display device 100B is slightly different from the display device 100 in FIG. 1B. The main difference is that in this embodiment, the flexible display panel 120B is attached to the second arc. surface 112 and extends to at least part of the two first side surfaces 113 .

Specifically, in this embodiment, the connection between the two first side surfaces 113 and the second arc surface 112 has a first side edge E1, and the two first side surfaces 113 extend (schematically shown with dotted lines) to form The intersection has an arc axis C2 of the arc display area S2. In this embodiment, the arc axis C2 is parallel to the two first side edges E1.

Under the above configuration, the display device 100B has a concave curved screen with a single curvature. The structure of the display device 100B is stable and not easily deformed.

FIG. 3 is a schematic three-dimensional view of a display device according to another embodiment of the present invention. Please refer to Figure 3. In this embodiment, the display device 100C is slightly different from the display device 100 in Figure 1B. The main difference is that in this embodiment, the display device 100C includes a plurality of substrates 1101, 1102, 1103, 1104 and Multiple flexible display panels 1201, 1202, 1203, 1204.

In this embodiment, the flexible display panels 1201, 1202, 1203, and 1204 respectively correspond to the substrates 1101, 1102, 1103, and 1104. In detail, these substrates 1101, 1102, 1103, and 1104 are connected in series with each other, and the first side surfaces 113 between the two adjacent substrates are opposite to each other. These flexible display panels 1201, 1202, 1203, and 1204 are jointly spliced into a combined Convex curved screen to achieve a large area and complete single curvature curved surface display device. In this way, defects caused by mass transfer can be avoided and the yield rate can be improved.

FIG. 4 is a schematic three-dimensional view of a display device according to another embodiment of the present invention. In this embodiment, the display device 100D is slightly different from the display device 100B in FIG. 2B . The main difference is that in this embodiment, the display device 100D includes a plurality of substrates 1101B, 1102B, 1103B, 1104B and a plurality of flexible substrates. Display panels 1201B, 1202B, 1203B, 1204B.

In this embodiment, the flexible display panels 1201B, 1202B, 1203B, and 1204B respectively correspond to the substrates 1101B, 1102B, 1103B, and 1104B. In detail, these substrates 1101B, 1102B, 1103B, and 1104B are connected in series with each other, and the first side surfaces 113 between the two adjacent substrates are opposite to each other. These flexible display panels 1201B, 1202B, 1203B, and 1204B are jointly spliced into a combined Concave curved screen to achieve a large area and complete single curvature curved surface display device. In this way, defects caused by mass transfer can be avoided and the yield rate can be improved.

In the above embodiments, the convex curved surface display device or the concave curved surface display device can also be spliced with another flat display device, or the convex curved surface display device and the concave curved surface display device can be spliced with each other to form a display with multiple continuous radians. device, the actual splicing method of the screens can be adjusted according to actual needs, and the present invention is not limited to this.

To sum up, in the display device of the present invention, the flexible display panel is arranged on the curved surface of the substrate, so that the curved display area has a single curvature, and the arc axis of the curved display area is parallel to the two first ends of the substrate. Side edges. Thereby, the manufacturing process of the display device is simple and the local stress generated at the corners of the flexible display panel is small without causing component breakage or damage. In addition, the substrate can be a hard substrate, which can maintain the appearance of the display device, so that the structure of the display device is stable and not easily deformed. In one embodiment, the display device includes a plurality of substrates and a plurality of flexible display panels. The substrates are connected in series, and the first sides between two adjacent substrates are opposite to each other. The flexible display panels are jointly spliced into one Combined curved screen to achieve a large-area and complete curved display device. In this way, defects caused by mass transfer can be avoided and the yield rate can be improved.

Although the present invention has been disclosed above through embodiments, they are not intended to limit the present invention. Anyone with ordinary knowledge in the technical field may make some modifications 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 appended patent application scope.

100, 100B, 100C, 100D: display device 110, 1101, 1102, 1103, 1104, 1101B, 1102B, 1103B, 1104B: Substrate 111: First arc surface 112:Second arc surface 113:First side 114:Second side 120, 120B, 1201, 1202, 1203, 1204, 1201B, 1202B, 1203B, 1204B: Flexible display panel C1, C2: Arc axis E1: first side edge E2: Second side edge S1, S2: Curved display area

FIG. 1A is a schematic front view of a display device according to an embodiment of the present invention. FIG. 1B is a perspective view of the display device of FIG. 1A . FIG. 2A is a schematic front view of a display device according to another embodiment of the present invention. FIG. 2B is a perspective view of the display device of FIG. 3A. FIG. 3 is a schematic three-dimensional view of a display device according to another embodiment of the present invention. FIG. 4 is a schematic three-dimensional view of a display device according to another embodiment of the present invention.

100C:Display device

1101, 1102, 1103, 1104: Substrate

113:First side

1201, 1202, 1203, 1204: Flexible display panel

E1: first side edge

Claims (9)

A display device including: At least one substrate has an opposite first arc surface and a second arc surface, two opposite first side surfaces, and two opposite second side surfaces. The two first side surfaces and the two second side surfaces are located on the first arc surface. Between the second arc surface and the connection between the two first side surfaces and the first arc surface and the second arc surface respectively, there is a first side edge; and At least one flexible display panel is arranged on the first curved surface or the second curved surface and extends to at least part of the two first sides. The at least one flexible display panel has a curved display area, and the curved surface The surface display area has a single curvature, and the arc axis of the arc display area is parallel to the two first side edges. The display device according to claim 1, wherein each first side edge is a straight edge. The display device of claim 1, wherein the connection between the two second side surfaces and the first arc surface and the second arc surface respectively has a second side edge, and each of the second side edges is Curved edges. The display device according to claim 1, wherein the first arc surface is a convex arc surface. The display device according to claim 1, wherein the second arc surface is a concave arc surface. The display device according to claim 1, wherein the first arc surface and the second arc surface are concentric arcs. The display device of claim 1, wherein the number of the at least one substrate and the at least one flexible display panel is multiple, and the flexible display panels correspond to the substrates one by one. The display device of claim 7, wherein the substrates are connected in series, the first sides between two adjacent substrates are opposite to each other, and the flexible display panels are jointly spliced to form a combined screen. The display device of claim 1, wherein the material of the at least one substrate includes metal or plastic.

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