Display Device, Splicing Display Device

The present disclosure provides a display device, a splicing display device, the display device includes: a display panel including a display region and a non-display region surrounding the display region, the non-display region including a bonding region; a backlight module disposed opposite to the display panel; a tape layer located on a peripheral side of the display panel and the backlight module, and an orthographic projection of the tape layer on a plane where the display device is located is not overlapped with an orthographic projection of the display panel on the plane where the display device is located.

TECHNICAL FIELD

The present disclosure relates to, but is not limited to, the field of display technologies, and more particularly, to a display device and a splicing display device.

BACKGROUND

With development of science and technology, splicing display devices are more and more widely used. A splicing display device is usually formed by splicing multiple independent display devices, and each independent display device includes a display panel and a backlight module. However, at present, there is a problem of tape failure in splicing display devices.

SUMMARY

The following is a summary of subject matter described herein in detail. This summary is not intended to limit the protection scope of the claims.

In a first aspect, an embodiment of the present disclosure provides a display device, including:a display panel, including a display region and a non-display region surrounding the display region, the non-display region including a bonding region;a backlight module disposed opposite to the display panel; andthe tape layer is located on the peripheral side of the display panel and the backlight module, wherein the orthographic projection of the tape layer on a plane where the display device is located is not overlapped with an orthographic projection of the display panel on the plane where the display device is located.

In an exemplary implementation, the display device further includes a protective plate and at least portion of the protective plate is located on a peripheral side of the bonding region.

In an exemplary implementation, the tape layer includes a first tape, the first tape is attached to a side surface of the protective plate away from the bonding region, and an orthographic projection of the first tape on the plane where the display device is located is not overlapped with the orthographic projection of the display panel on the plane where the display device is located.

In an exemplary implementation, the protective plate has a protruding end, the protruding end protrudes a surface of the bonding region away from the backlight module, and the protruding end and a surface of the bonding region away from the backlight module form an L-shaped groove.

In an exemplary implementation, at least a portion of the first tape is attached to a side of the protruding end away from the bonding region.

In an exemplary implementation, a light shielding adhesive layer is further included, the light shielding adhesive layer is disposed in the L-shaped groove, the light shielding adhesive layer is respectively in contact with side surfaces of the L-shaped groove.

In an exemplary implementation, an orthographic projection of the light shielding adhesive layer on the plane where the display device is located is not overlapped with the display region.

In an exemplary implementation, the protruding end has a protruding length of 0.5 mm to 0.9 mm.

In an exemplary implementation, the tape layer further includes a second tape, the second tape is located on a peripheral side of another non-display region of the display substrate except the bonding region, and an orthographic projection of the second tape on the plane where the display device is located is not overlapped with an orthographic projection of the display panel on the plane where the display device is located.

In an exemplary implementation, the second tape includes a stretch tape and an edge wrapping tape, at least a portion of the stretch tape is attached to a side of a non-display region of the display substrate except the bonding region, and at least a portion of the edge wrapping tape is attached to a side wall of the backlight module.

In an exemplary implementation, an upper polarizer is further included, the upper polarizer is disposed on a side of the display panel away from the backlight module, and the second tape is not overlapped with a side surface of the upper polarizer.

In an exemplary implementation, a notch is provided at a side corner of the edge wrapping tape close to the stretch tape.

In an exemplary implementation, the backlight module includes a bezel, a side of the bezel close to the display panel includes a first support surface, and the first support surface is matched with a surface of the display panel close to the bezel.

In an exemplary implementation, the side of the bezel close to the display panel further includes a second support surface, the second support surface is located at a side of the first support surface away from the display panel, the display device further includes a light guide structure disposed opposite to the display panel, the light guide structure is located at a side of the display panel close to the bezel, and the second support surface is matched with a surface of the light guide structure close to the bezel.

In an exemplary implementation, the backlight module further includes a light guide strip located between the second support surface and the light guide structure.

In an exemplary implementation, the light guide strip is made of polycarbonate.

In an exemplary implementation, the side of the bezel close to the display panel further includes a support side surface connected to the first support surface and the second support surface, the backlight module further includes a diffuse reflective layer, the diffuse reflective layer is disposed on the support side surface, the diffuse reflective layer is disposed opposite to a side surface of the light guide structure, and the diffuse reflective layer is configured to diffuse reflect incident light.

In an exemplary implementation, the backlight module further includes a reflective layer, the reflective layer is disposed on an inner surface of a side wall of the backlight module, and the reflective layer is configured to reflect incident light towards the display panel.

In an exemplary implementation, a circuit board and a chip on film are further included, the circuit board and the chip on film are located on an outer side of the backlight module, one end of the chip on film is connected to the bonding region and covers a partial region of a side surface of the bonding region, and the other end of the chip on film is connected to the circuit board.

In a second aspect, an embodiment of the present disclosure further provides a splicing display device, including the display device of the first aspect.

Other aspects may become clear after the accompanying drawings and the detailed description are read and understood.

DETAILED DESCRIPTION

To make objectives, technical solutions, and advantages of the present disclosure clearer, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. It is to be noted that implementations may be practiced in multiple different forms. Those of ordinary skills in the art may easily understand such a fact that implementations and contents may be transformed into various forms without departing from the purpose and scope of the present disclosure. Therefore, the present disclosure should not be explained as being limited to contents described in following implementations only. The embodiments in the present disclosure and features in the embodiments may be combined randomly with each other if there is no conflict.

In the drawings, a size of a constituent element, a thickness of a layer, or a region is exaggerated sometimes for clarity. Therefore, one implementation of the present disclosure is not necessarily limited to the sizes, and shapes and sizes of various components in the drawings do not reflect actual scales. In addition, the drawings schematically illustrate ideal examples, and one implementation of the present disclosure is not limited to shapes, numerical values, or the like shown in the drawings.

Ordinal numerals such as “first”, “second”, and “third” in the specification are set to avoid confusion between constituent elements, but not to set a limit in quantity.

In the specification, for convenience, wordings indicating orientation or positional relationships, such as “middle”, “upper”, “lower”, “front”, “rear”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, and “outside”, are used for illustrating positional relationships between constituent elements with reference to the drawings, and are merely for facilitating the description of the specification and simplifying the description, rather than indicating or implying that a referred device or element must have a particular orientation and be constructed and operated in the particular orientation. Therefore, they cannot be understood as limitations on the present disclosure. The positional relationships between the constituent elements may be changed as appropriate according to directions for describing the various constituent elements. Therefore, appropriate replacements may be made according to situations without being limited to the wordings described in the specification.

In the specification, unless otherwise specified and defined explicitly, terms “mount”, “mutually connect”, and “connect” should be understood in a broad sense. For example, a connection may be a fixed connection, or a detachable connection, or an integrated connection. It may be a mechanical connection or an electrical connection. It may be a direct mutual connection, or an indirect connection through middleware, or an internal communication between two elements. Those of ordinary skills in the art may understand specific meanings of the above terms in the present disclosure according to specific situations.

In the specification, “parallel” refers to a state in which an angle formed by two straight lines is above −10° and below 10°, and thus also includes a state in which the angle is above −5° and below 5°. In addition, “perpendicular” refers to a state in which an angle formed by two straight lines is above 80° and below 100°, and thus also includes a state in which the angle is above 85° and below 95°.

In the specification, a “film” and a “layer” are interchangeable. For example, a “conductive layer” may be replaced with a “conductive film” sometimes. Similarly, an “insulation film” may be replaced with an “insulation layer” sometimes.

In the present disclosure, “about” refers to that a boundary is defined not so strictly and numerical values within process and measurement error ranges are allowed.

FIG.1is a first sectional view of a display device in the related art.FIG.2is a second sectional view of a display device in the related art. As shown inFIG.1andFIG.2, in the related art, a display device includes a display panel10and a backlight module disposed oppositely, the backlight module includes a bezel, and the display panel10includes a display region and a non-display region surrounding the display region. The non-display region includes a first non-display region located on a first side400of the display device and a second non-display region located on a second side500of the display device. The first non-display region may include a bonding region200. In the related art, the display device further includes a light shielding tape13located on a circumferential side of the display panel10. The light shielding tape13may be located on a side of the bonding region200away from the display region100and a side of the second non-display region away from the display region100, respectively.

According to a research conducted by the inventor of the present disclosure, as shown inFIG.1, on the first side400of the display device, the light shielding tape13has a first edge wrapping part131, the first edge wrapping part131is bent toward a surface of the bonding region200and is attached to a surface of an upper polarizer of the display panel10for shielding an edge of the display panel10and preventing light leakage at the edge of the display panel10. However, since the bonding region200is bound to a chip on film (COF for short), it is necessary to coat a UV adhesive layer at a bonding position of the bonding region200, a surface of the UV adhesive layer cannot be flush with a surface of the display region100due to characteristics of the UV adhesive layer, resulting in a gap between the bonding region200and the first edge wrapping part131, causing a portion of the first edge wrapping part131to be suspended, and leading to a problem that the first edge wrapping part131is prone to upwarp.

Moreover, the display panel10includes an array substrate and a color filter substrate which are aligned with each other, and an upper polarizer disposed on a side of the color filter substrate away from the array substrate. The first edge wrapping part131is attached to a surface of the upper polarizer. In order to prevent the chip on film (COF for short) from being burned when cutting the upper polarizer, an edge of the upper polarizer is located at an inner side of an edge of the color filter substrate, and the first edge wrapping part131cannot be fully bonded to the upper polarizer, so that an attached area between the first edge wrapping part131and the upper polarizer is small, and the first edge wrapping part131is prone to the problem of tape failure. For example, a distance from the edge of the upper polarizer to the edge of the color filter substrate is about 0.15 mm, a length of an overlapped region between the first edge wrapping part131and the color filter substrate is 0.5 mm, and a length of an attached portion between the first edge wrapping part131and the upper polarizer is 0.45 mm.

According to the research conducted by the inventor of the present disclosure, as shown inFIG.2, on the second side500of the display device, the light shielding tape13has a second edge wrapping part132, the second edge wrapping part132is bent toward a surface of the display panel10and is attached to a surface of the upper polarizer of the display panel10for shielding an edge of the display panel10and preventing light leakage at the edge of the display panel10. Since the second edge wrapping part132needs to be attached by lighting when the second edge wrapping part132is attached, an operation difficulty and a rework rate are high, resulting in a waste of work time. Moreover, when the display device is in use, the second edge wrapping part132is prone to being scratched, resulting in defects of the second edge wrapping part132such as upwarp and light leakage.

A display device is provided in an embodiment of the present disclosure, including:a display panel;a backlight module disposed opposite to the display panel;a tape layer, located on a peripheral side of the display panel and the backlight module, and an orthographic projection of the tape layer on a plane where the display device is located is not overlapped with an orthographic projection of the display panel on the plane where the display device is located.

Each portion of the display device according to an embodiment of the present disclosure will be described in detail below:

FIG.3is a sectional view of a display device according to an embodiment of the present disclosure. As shown inFIG.3, the display device includes a display panel10, a backlight module, and a tape layer70. The display panel10and the backlight module are disposed oppositely, and the tape layer70is positioned on a peripheral side of the display panel10and the backlight module. An orthographic projection of the tape layer70on a plane where the display device is located is not overlapped with the orthographic projection of the display panel10on the plane where the display device is located, that is, the tape layer70does not cover a surface of the display panel10away from the backlight module in a direction perpendicular to the display panel10, thereby avoiding upwarp of the tape layer70and solving the problem of light leakage of the display device due to the upwarp of the tape layer70.

The tape layer70can reinforce stability of the display device, and also has a function of preventing Electro-Magnetic Interference (EMI for short) and achieving electrostatic shielding. In addition, the tape layer70can prevent light leakage.

As shown inFIG.3, the display device includes a first side400and a second side500opposite to each other in a direction parallel to the display device.

FIG.4is a schematic diagram of a structure of a display panel in a display device according to an embodiment of the present disclosure. In an exemplary implementation, the display panel10may be a liquid crystal display panel, which may include an array substrate1and a color filter substrate2disposed aligned with each other, and a liquid crystal layer3disposed between the array substrate1and the color filter substrate2. The display panel10may include a display region100and a non-display region surrounding the display region100. The non-display region includes a first non-display region located on the first side400of the display device and a second non-display region300located on the second side500of the display device. The first non-display region may include a bonding region200. An orthographic projection of the color filter substrate2and an orthographic projection of the liquid crystal layer3on a plane where the display panel10is located is not overlapped with the bonding region200. A thickness of the bonding region200is smaller than a thickness of the display region100. The bonding region200includes multiple bonding electrodes for bonding with a chip on film (COF for short).

In the direction perpendicular to the display panel10, the display panel10includes a light incidence side and a light exit side opposite to each other. The light incidence side is a side of the display panel10close to the backlight module and the light exit side is a side of the display panel10away from the backlight module. The display device further includes an upper polarizer and a lower polarizer. The upper polarizer is disposed on the light exit side of the display panel10and the lower polarizer is disposed on the light incidence side of the display panel10.

In an exemplary implementation, as shown inFIG.3, the backlight module includes a light guide structure20, and the light guide structure20disposed opposite to the display panel10and located on the light incidence side of the display panel10. The light guide structure20may include a diffusion plate201. The diffusion plate201and the display panel10may be disposed oppositely. A material of the diffusion plate201may be polystyrene (PS for short), but this disclosure is not limited thereto. The light guide structure20may include a diffusion sheet202. The diffusion sheet202is stacked on a side of the diffusion plate201close to the display panel10.

FIG.5is a partial sectional view of a bezel in a display device according to an embodiment of the present disclosure. In an exemplary implementation, as shown inFIG.3andFIG.5, the backlight module further includes a bezel whose side close to the display panel10includes a first support surface4and a second support surface5. The first support surface4may be parallel to the display panel10. The first support surface4is matched with a surface of the display panel10close to the bezel so that the bezel is connected to the display panel10. Specifically, a fixing adhesive is coated on the first support surface4and the first support surface4is attached to a lower polarizer located on a surface of the display panel10close to a side of the bezel by the fixing adhesive. The fixing adhesive on the first support surface4is attached to an edge region of the lower polarizer. The first support surface4may be strip-shaped and parallel to a side edge of the display panel10. The second support surface5may be parallel to the first support surface4. The second support surface5is located on a side of the first support surface4away from the display panel. That is, a distance between the first support surface4and the display panel is smaller than a distance between the second support surface5and the display panel. Among them, a distance between the first support surface4and the second support surface5in the direction perpendicular to the display panel10needs to be greater than or equal to a thickness of the light guide structure20. The second support surface5is matched with a surface of the light guide structure20close to the bezel, i.e., the second support surface5supports the light guide structure20. As an example, the light guide structure20includes a diffusion plate201and a diffusion sheet202, and the second support surface5is used for supporting the diffusion plate201.

In an exemplary implementation, as shown inFIG.3andFIG.5, a side of the bezel close to the display panel further includes a support side surface6connected to the first support surface4and the second support surface5. As an example, the first support surface4and the second support surface5parallel to each other, the support side surface6may be perpendicular to the second support surface5, thereby forming a step structure on the bezel, and the step surfaces of the step structure are the second support surface5and the support side surface6.

FIG.6is a partial sectional view of a first side of a display device according to an embodiment of the present disclosure. In an exemplary implementation, as shown inFIG.3andFIG.6, the backlight module further includes a light guide strip203and the light guide strip203is located between the bezel and the light guide structure20. Specifically, the light guide strip203is located between the second support surface5and the diffusion plate201. A surface of the light guide strip203close to the diffusion plate201and a surface of the light guide strip203close to the second support surface5may each be provided with an adhesive layer. The adhesive layer on the surface of the light guide strip203close to the diffusion plate201is attached to the diffusion plate201, and the adhesive layer on the surface of the light guide strip203close to the second support surface5is attached to the second support surface5, so that the light guide strip203is attached between the diffusion plate201and the second support surface5. The light guide strip203may be made of a polycarbonate (PC for short) material or a polystyrene (PS for short) material and a light transmittance of the light guide strip203may be greater than 99%. The light guide strip203is made of polycarbonate (PC for short), which has lower expansion rate than polystyrene (PS for short), and can effectively prevent problems such as defects caused by expansion of the light guide strip. The backlight in the display device can effectively pass through the light guide strip203to an edge of the display panel10and problems such as a dark bezel can be prevented. A thickness of the light guide strip203may be 1 mm to 2 mm, for example, the thickness of the light guide strip203may be 1.4 mm. A width of the light guide strip203may be 2 mm to 4 mm, for example, the width of the light guide strip203may be 3.5 mm.

In an exemplary implementation, a distance between an edge of the aforementioned light guide strip203and the support side surface6is smaller than a distance between an edge of the diffusion plate201and the support side surface6.

In an exemplary implementation, as shown inFIG.3andFIG.5, the bezel may include a back plate30and a middle bezel40. The back plate30may include a bottom wall8and a side wall7. The bottom wall8may be disposed opposite to the display panel10described above and on a side of the light guide structure20away from the display panel. The side wall7is connected to a side of the bottom wall8close to the display panel and is provided on a periphery of the bottom wall8. The side wall7may include a first wall body701and a second wall body702connected to each other. The second wall body702is located on a side of the first wall body701away from the bottom wall8. The side wall7may further include a third wall body703connected to the first wall body701and the second wall body702. The first wall body701and the second wall body702may both be perpendicular to the bottom wall8. The third wall body703may be parallel to the bottom wall8, while the present disclosure is not specifically limited thereto.

In an exemplary implementation, as shown inFIG.3andFIG.5, on the first side of the display device, the first wall body701in the bezel is recessed toward an inner side of the side wall7relative to the second wall body702, that is, the second wall body702is located at an outer side of the first wall body701. The first wall body701may form an accommodation space with a protective plate80to be described below.

In an exemplary implementation, as shown inFIG.3andFIG.5, the middle bezel40may be fixed to the back plate30, for example the middle bezel40may be fixed to the second wall body702of the back plate30by screws. The first support surface4and the second support surface5are both located at one end of the middle bezel40close to the display panel, that is, the one end of the middle bezel40close to the display panel includes the first support surface4and the second support surface5, and the one end of the middle bezel40away from the display panel is in contact with the bottom wall8of the back plate30, so that the middle bezel40is supported on the bottom wall8of the back plate30.

In an exemplary implementation, the middle bezel40is a supporting device for supporting the back plate30and the light guide structure20, and between the back plate30and the display panel, and needs to have certain strength. In order to ensure an assembly size and improve the assembly accuracy, the middle bezel40may be made of a metal extrusion profile to ensure dimensional accuracy, straightness and overall strength of the backlight module. For example, an aluminum alloy extruded profile or a magnesium alloy extruded profile may be used for the middle bezel40, and the metal extruded profile has a relatively flat surface, so that the first support surface4and the second support surface5in the middle bezel40can be flattened, and flatness of the light guide structure20and the display panel10after installation can be ensured. In other exemplary embodiments, the middle bezel40may also be a rubber frame.

In an exemplary implementation, as shown inFIG.3, the display device of the present disclosure may further include a circuit board50and a chip on film60(COF for short). The circuit board50and the chip on film60(COF for short) may be located on the first side of the display device and on an outer side of the backlight module. One end of the chip on film60is connected to the bonding region200of the display panel10, one end of the chip on film60covers a partial region of a side surface of the bonding region, and the other end of the chip on film60is connected to the circuit board50. Of course, the chip on film60may cover a partial region of a side surface of another side of the display panel. The circuit board50may be located at an outer side of the bezel and electrically connected to the chip on film60. The circuit board50may be located at an outer side of the side wall7of the back plate30and disposed oppositely to the first wall body701of the side wall7of the back plate30.

In an exemplary implementation, as shown inFIG.3, the display device of the present disclosure may further include a light emitting substrate9. The light emitting substrate9may be disposed on a surface of the bottom wall8close to the display panel10and includes multiple light sources. The multiple light sources are configured to provide backlight for the display panel.

In an exemplary implementation, a structure of the light sources in the light emitting substrate9may not be limited as long as light can be emitted. For example, a light source in the light emitting substrate9may be a blue Mini LED or a blue Micro LED. A typical size (e.g., length) of a Micro-LED may be less than 50 μm, e.g., 10 μm to 50 μm. A typical dimension (e.g., length) of a Mini LED may be about 50 μm to 150 μm, e.g., 80 μm to 120 μm. Mini LEDs or Micro LEDs can be transferred to the light emitting substrate9in batches, and by cooperation with the driving design, light emitting of the light emitting substrate9can be achieve.

In an exemplary implementation, as shown inFIG.3andFIG.6, the backlight module further includes a reflective layer11, and the reflective layer11is disposed on an inner surface of a sidewall of the backlight module. The reflective layer11may be disposed along a periphery of the light emitting substrate9. Specifically, the reflective layer11is provided on the inner surface of the middle bezel40. The reflective layer11is configured to reflect incident light towards the display panel10. Part of the light emitted from the light sources in the light emitting substrate9is emitted towards the display panel10, and part of the light is emitted towards the middle bezel40. The light emitted towards the middle bezel40enters the reflective layer11, the reflective layer11reflects the incident light towards the display panel10, thereby avoiding loss of the light emitted from the light emitting substrate9and improving a brightness of the backlight provided by the backlight module.

In an exemplary embodiment, as shown inFIG.3andFIG.6, the backlight module further includes a diffuse reflective layer12, and the diffuse reflective layer12is disposed on an inner surface of a side wall of the bezel and located at an end of the bezel adjacent to the display panel. The diffuse reflective layer may be disposed along the periphery of the light emitting substrate9. Specifically, the diffuse reflective layer12is disposed on the support side surface6of the bezel and disposed opposite to a side surface of the light guide structure20. The diffuse reflection layer12is configured to diffuse the incident light, effectively diffuse the incident light at an edge of the display panel, and avoid problems such as bright lines around the display panel.

In an exemplary implementation, as shown inFIG.3andFIG.6, the display device of the present disclosure further includes a protective plate80, and at least a portion of the protective plate80may be connected to the outer side of the bezel. For example, the protective plate80is located at the outer side of the first wall body701. Among them, the protective plate80may be threaded to the first wall body701, while the embodiments of the present disclosure are not specifically limited thereto.

In an exemplary implementation, as shown inFIG.3andFIG.6, the protective plate80is located on the first side of the display device, the protective plate80is located in the bonding region200in the display panel10and on a peripheral side of the side wall of the bezel located on the first side of the display device, i.e., the protective plate80is located on a side of the bonding region200away from the display region100and is disposed opposite to the side surface of the bonding region200and the side wall of the bezel located on the first side of the display device. An accommodation space is formed between the protective plate80and the first wall body701of the bezel, and the aforementioned circuit board50is located in the accommodation space. The protective plate80has a protruding end801, and the protruding end801protrudes from a surface of the bonding region200in the display panel10on a side away from the backlight module and the protruding end801forms an L-shaped groove with a surface of the bonding region200away from the backlight module. Among them, the L-shaped groove includes a side surface and a bottom surface, the side surface of the L-shaped groove is a surface of the protruding end801close to the display panel, and the bottom surface of the L-shaped groove is the surface of the bonding region200away from the backlight module. Among them, a protruding length of the protruding end801may be 0.1 mm to 1 mm, for example, the protruding length of the protruding end801may be 0.5 mm to 0.9 mm.

In an exemplary embodiment, as shown inFIG.3andFIG.6, the tape layer70includes a first tape71, the first type71is attached to an outer surface of the protective plate80, i.e., the first tape71is attached to a side surface of the protective plate80away from the bonding region200. A portion of the first tape71is attached to an outer surface of the protruding end801of the protective plate80and is disposed opposite to a side surface of the bonding region200away from the display region. A portion of the first tape71is opposite to a side edge of the bezel. An orthographic projection of the first tape71on the plane where the display device is located is not overlapped with the orthographic projection of the display panel10on the plane where the display device is located, namely, the first tape71does not cover the display panel in a direction perpendicular to the display panel, and the first tape71does not need to be bent to cover the display panel, thus effectively solving the problems of poor attachment of the first tape71in a production process and scratching occurred when a client takes the display device, which results in upwarp of the first tape71, light leakage and the like.

In an exemplary implementation, the display device of the present disclosure further includes a light shielding adhesive layer90, the light shielding adhesive layer90is disposed in a L-shaped groove. The light shielding adhesive layer90is in contact with a side surface of the L-shaped groove, shields a gap between the protective plate80and the side surface of the bonding region200, prevents light from leaking out from the gap, and solves the problem of light leakage at an edge of the display device of the present disclosure.

In an exemplary implementation, the light shielding adhesive layer90does not cover the display region100, i.e. an orthographic projection of the light shielding adhesive layer90on the plane where the display device is located is not overlapped with the display region100, preventing the light shielding adhesive layer90from shielding the display region100. The light shielding adhesive layer90may be made of a black hot melt adhesive, and the light shielding adhesive layer90may be formed by dispensing glue on a side surface of the bonding region200away from the backlight module by a dispensing machine. The light shielding adhesive layer90may be made of polyurethane adhesive with low light transmittance, so that the light shielding adhesive layer90satisfies fluidity and light shielding property, thereby preventing the light shielding adhesive layer90from entering the display region100with excessive fluidity and shielding light leakage at an edge of the display panel.

FIG.7is a partial sectional view of a second side of a display device according to an embodiment of the present disclosure. In an exemplary implementation, as shown inFIG.3andFIG.7, the tape layer70further includes a second tape72, the second type72may be located on a side of the display device other than the first side400, that is, the second tape72may be located on a peripheral side of other non-display regions of the display substrate10other than the bonding region.

In an exemplary implementation, as shown inFIG.3andFIG.7, as an example, the second tape72may be located on the second side500of the display device. The second tape72may be located on a side of the second non-display region300away from the display region100. A portion of the second tape72is attached to a side surface of the second non-display region300away from the display region100, and a portion of the second tape72is attached to an outer surface of the side wall of the bezel. An orthographic projection of the second tape72on the plane where the display device is located is not overlapped with an orthographic projection of the display panel10on the plane where the display device is located, i.e. the second tape72does not cover the display panel in a direction perpendicular to the display panel, and the second tape72does not need to be bent to cover the display panel, thus effectively solving the problems such as poor attachment of the second tape72in the production process, scratching occurred when a client takes the display device, which results in upwarp of the second tape72, light leakage and the like.

In an exemplary implementation, as shown inFIG.3andFIG.7, the second tape72includes a stretch tape721and an edge wrapping tape722. A portion of the stretch tape721is attached to a side surface of the display panel10, and a portion of the edge wrapping tape721is attached to the outer surface of the side wall of the bezel. The edge wrapping tape722is attached to the outer surface of the side wall of the bezel, and an end of the edge wrapping tape722close to the stretch tape721may cover a portion of the stretch tape721. The stretch tape721has good ductility and can block light, and is not prone to scratching and upwarping.

In an exemplary implementation, the stretch tape721is not overlapped with a side surface of the upper polarizer14on the display panel10, i.e., the stretch tape721does not cover the side surface of the upper polarizer14. In the display device of the present disclosure, the stretch tape721can first be attached to the side surface of the display panel, and then the upper polarizer is attached to the display panel, so as to avoid the stretch tape721from upwarping when the display device is used by scratching an edge of the upper polarizer14.

FIG.8is a schematic diagram of a structure of an edge wrapping tape in a display device according to an embodiment of the present disclosure. In an exemplary implementation, as shown inFIG.8, the edge wrapping tape722is provided with a notch7221at a side corner close to the stretch tape721and the notch7221may be L-shaped. The notch7221can prevent the edge wrapping tape722from upwarping and can prevent the edge wrapping tape722from upwarping due to deformation of the display device in harsh environments, such as high temperature and high humidity.

An implementation of the present disclosure further provides a splicing display device. The splicing display device can be spliced by multiple display devices in the aforementioned implementations. Since the splicing display device of the implementation of the present disclosure includes a same display device as the display device in the implementations of the above display device, it has a same beneficial effect, which will not be repeated in the present disclosure.

Although the implementations disclosed in the present disclosure are as above, the described contents are only implementations used for convenience of understanding the present disclosure and are not intended to limit the present disclosure. Those skilled in the art may make any modification and change in the forms and details of the implementations without departing from the essence and scope of the present disclosure. However, the scope of protection of the present disclosure should still be subject to the scope defined by the attached claims.