TWI666487B - Display device - Google Patents

Abstract

The present invention provides a display device including a display panel, an extension plate, a polarizing layer, and a light shielding layer. The display panel has a first substrate and a second substrate; wherein the second substrate is at least partially overlapped with the first substrate and has a second end edge. The first substrate has a protruding section protruding beyond the second end edge and has a first end edge. The extension plate is disposed on the protruding section and has an inner end edge and an outer end edge; the inner end edge is opposite to the second end edge to sandwich an interface, and the outer end edge protrudes beyond the first end edge. The polarizing layer covers a surface of the second substrate facing away from the first substrate, and extends beyond the second end edge to cover the extension plate. The light-shielding layer is configured to at least partially cover a projection range of the interface on the polarizing layer, the first substrate, or the second substrate.

Description

Display device

The present invention relates to a display device; specifically, the present invention relates to a display device having an extension plate.

Flat and curved display devices have been widely used in various electronic devices, such as mobile phones, personal wearable devices, televisions, host computers for transportation, personal computers, digital cameras, handheld video games, and the like. However, with the increase in consumer demand, the appearance design of display devices is becoming increasingly important.

In terms of the appearance of the display device, in recent years, narrow bezels or even no bezels have been used as product design requirements in the market. However, how to achieve the appearance design of a display device with a narrow or borderless frame has always been a direction for product designers. Traditionally, the back frame can be filled with glue, decorative panels or other methods can be used to replace the outer frame or the front frame of the display device; however, the above method may still cause heavy rework, light leakage, or the junction is easy to use due to different materials. Perceived. It can be seen that there is still room for improvement in the above methods.

An object of the present invention is to provide a display device that can create a visual effect of a narrow frame or a frameless appearance design.

Another object of the present invention is to provide a display device, which can improve the visual effect of the appearance design while taking into account the effect of reducing light leakage.

The display device includes a display panel, an extension plate, a polarizing layer, and a light shielding layer. The display panel has a first substrate and a second substrate, and the second substrate is stacked on the first substrate. The second substrate is at least partially overlapped with the first substrate and has a second end edge. The first substrate has a protruding section protruding beyond the second end edge and has a first end edge. The extension plate is disposed on the protruding section and is adjacent to the second substrate side by side. The extension plate has an inner end edge and an outer end edge; the inner end edge is opposite to the second end edge to sandwich an interface, and the outer end edge protrudes beyond the first end edge. The polarizing layer covers a surface of the second substrate facing away from the first substrate, and is bonded to the second substrate. One end of the polarizing layer extends beyond the second end edge to cover the extension plate, and is directly or indirectly attached to the extension plate. The light-shielding layer is configured to at least partially cover a projection range of the interface on the polarizing layer, the first substrate, or the second substrate. With the arrangement of the light-shielding layer, the chance of light leakage from the interface from the backlight module or elsewhere can be reduced to improve the visual effect of the overall appearance.

100‧‧‧ display panel

110‧‧‧first substrate

111‧‧‧ the first edge

113‧‧‧ protruding section

120‧‧‧second substrate

121‧‧‧ second edge

200‧‧‧ interface

300‧‧‧ extension board

310‧‧‧Inner edge

330‧‧‧outer edge

500‧‧‧ polarizing layer

510‧‧‧Slot

600‧‧‧ Sealant

700‧‧‧ shading layer

900‧‧‧ filler

1 is an exploded view of an embodiment of a display device; FIG. 2 is a schematic cross-sectional view of a display device; FIG. 3A is a schematic cross-sectional view of a display device including a filling material; FIG. 3B is a schematic cross-sectional view of another embodiment of a display device including a filling material Figure 4 is a schematic sectional view of an embodiment of a display device including a sealing compound; Figure 5 is a schematic sectional view of an embodiment of a display device with a light shielding layer at different positions; Figure 6 is a schematic sectional view of an embodiment of a display device with another light shielding layer at different positions FIG. 7 is a schematic cross-sectional view of another embodiment of a display device in which a light-shielding layer is located at different positions.

The present invention provides a display device. In one embodiment of the present invention, the display device is a flat or curved display device, such as a liquid crystal display device, an organic light emitting diode display device, a plasma display device, an electrophoretic display device, and the like. The display device may preferably be a computer monitor, a television, a monitor, a car host, or the like. In addition, the display device can also be applied to other electronic devices, for example, as a display screen of a mobile phone, a digital camera, a handheld game instrument, and the like.

In the embodiment shown in FIG. 1, the display device includes a display panel 100, an extension plate 300, a polarizing layer 500 and a light shielding layer 700. The display panel 100 may be a liquid crystal display panel, an organic light emitting diode display panel, a plasma display panel, an electrophoretic display panel, etc., but is not limited thereto. The display panel 100 includes a first substrate 110 and a second substrate 120, and the second substrate 120 is stacked on the first substrate 110. The first substrate 110 and the second substrate 120 are preferably glass substrates, but may be plastic substrates in different embodiments. The second substrate 120 and the first substrate 110 are at least partially overlapped, and the second substrate 120 has a second end edge 121. The first substrate 110 has a protruding section 113 protruding beyond the second end edge 121 and has a first end edge 111; in other words, the protruding section 113 does not overlap the second substrate 120. As shown in FIG. 1, the protruding section 113 preferably carries a driving circuit or other lines, and is preferably formed in a long shape. In addition, as shown in FIG. 2, the first end edge 111 and the second end edge 121 are on a plane parallel to the first substrate 110 (for example, a plane on which the first substrate 110 faces the second substrate 120 or another virtual plane). The projections have a first pitch G ₁ . Specifically, the first pitch G _{1 is} the width of the long portion formed by the protruding section 113.

As shown in FIGS. 1 and 2, the extension plate 300 is disposed on the protruding section 113 and is adjacent to the second substrate 120 side by side. The extension plate 300 is preferably a plastic substrate; however, in different embodiments, the extension plate 300 may be made of glass or other materials. To provide better stiffness, the Young's coefficient of the extension plate 300 is preferably not less than 0.5 GPa. In addition, the extension plate 300 is preferably made of an opaque material, but is not limited thereto. The thickness of the extension plate 300 is preferably not greater than the thickness of the second substrate 120 so that the surface of the extension plate 300 and the surface of the second substrate 120 are flush with each other or do not protrude from the surface of the second substrate 120. However, in different embodiments, the thickness of the extension plate 300 may also be greater than the thickness of the second substrate 120 so that the surface of the extension plate 300 is more prominent than the second substrate 120 to create a special visual effect. The extension plate 300 has an inner end edge 310 and an outer end edge 330. Preferably, the inner end edge 310 and the outer end edge 330 are opposite two long sides of the extension plate 300 formed in a strip shape, respectively. The inner end edge 310 is opposite to the second end edge 121 to sandwich the interface 200, and the outer end edge 330 extends beyond the first end edge 111. The inner end edge 310 and the second end edge 121 are preferably in conflict with each other, and the interface 200 is preferably in a position where the two are in conflict. However, in different embodiments, the inner end edge 310 and the second end edge 121 may be opposite to each other without contacting, and the interface 200 is a gap between the two.

As shown in FIG. 2, the projection line of the first end edge 111 on the extension plate 300 and the outer end edge 330 are preferably parallel, and there is a second distance G _{2 between them} . In the preferred embodiment, the first gap G _{2. 1} the ratio between the sum of the first distance G G _{G. 1} and the second pitch is 0.14 to _{0.88 1 / (G 1 + G} 2) interposed. More preferably, the ratio G ₁ / (G ₁ + G ₂ ) is between 0.27 and 0.85. With this design, the structural stability and the elasticity of the design dimensions can be taken into consideration.

As shown in FIGS. 1 and 2, the polarizing layer 500 covers a surface of the second substrate 120 facing away from the first substrate 110, and is preferably bonded to the second substrate 120. One end of the polarizing layer 500 extends beyond The second end edge 121 covers the extension plate 300 and is preferably directly or indirectly attached to the extension plate 300. The rigidity of the polarizing layer 500 is preferably less than the rigidity of the extension plate 300, but it is not limited thereto.

The light shielding layer 700 is provided to cover at least a part of the projection range of the interface 200 on the polarizing layer 500, the first substrate 110 or the second substrate 120. In this embodiment, as shown in FIGS. 1 and 2, the light-shielding layer 700 is disposed on a surface of the polarizing layer 500 facing the second substrate 121. The light-shielding layer 700 may be preferably formed by coating, attaching, printing, plating, a black matrix process, or other physical or chemical processes. In this embodiment, the light-shielding layer 700 is distributed outside the visible area of the display device in a wide band shape, and covers the second substrate 120 and the extension plate 300 at the same time, thus covering the interface 200 at the same time. With the arrangement of the light-shielding layer 700, the chance of light leakage from the backlight module or elsewhere from the interface 200 can be reduced to improve the visual effect of the overall appearance.

In the embodiment shown in FIG. 3A, a filler material 900 is disposed on a side of the protruding section 113 facing the extension plate 300; the extension plate 300 is disposed on the protruding section 113 through the filler material 900. The filling material 900 is preferably adhesive, so that the extension plate 300 can be positioned on the protruding section 113. In addition, the thickness of the filling material 900 can also raise the extension plate 300 so that the extension plate 300 is flush with the surface of the second substrate 120. The filling material 900 may also be provided on a circuit arranged on the protruding section 113 to provide additional protection for the circuit. In the embodiment shown in FIG. 3B, the filling material 900 can also be distributed to the interface 200. When the interface 200 is formed as a gap between the second end edge 121 and the inner end edge 310, the filling material 900 may further penetrate into the gap to provide a structural strengthening effect. In addition, the filling material 900 can also be made of an opaque material, which can provide the effect of blocking light leakage.

FIG. 4 shows another embodiment of a display device. Compared with the design in which the polarizing layer 700 is aligned with the outer edge 330 of the extension plate 300 in the foregoing embodiment, the polarizing layer 500 extends beyond the outer edge 330 in this embodiment. A portion of the polarizing layer 500 protruding beyond the outer end edge 330 and an end surface of the outer end edge 330 Together, they form a channel 510 with a V-shaped profile. As shown in FIG. 4, the sealant 600 is set to fill the channel 510, and a whole sealant strip is preferably formed to enhance the stability of the overall structure.

In the embodiment shown in FIG. 5, the light shielding layer 700 is at least partially disposed on a surface of the protruding section 113 facing the extension plate 300. Preferably, the light shielding layer 700 is formed in the same process as the black matrix in the display panel and is disposed to cover the circuits and lines arranged on the protruding section 113. In this embodiment, the light shielding layer 700 also extends between the first substrate 110 and the second substrate 120 at the same time, so that the projection range of the interface 200 on the first substrate 110 can be completely covered. As shown in FIG. 5, a portion of the light shielding layer 700 disposed on the protruding section 113 has a first width W ₁ from the second end edge 121. The ratio of the first width W ₁ to the first pitch G ₁ is preferably between 0.15 and 1. With this arrangement, the light shielding layer 700 can have a sufficient distribution area to block the light path of light leakage from the display device, and further reduce the chance of light leakage.

In the embodiment shown in FIG. 6, a gap is sandwiched between the second end edge 121 and the inner end edge 310 to form the interface 200. The light-shielding layer 700 is disposed on the end surface of the second end edge 121. Preferably, the light-shielding layer 700 fills the interface 200 formed as a gap to provide a better light-proof effect. In addition, with this arrangement, the possibility of a shiny condition at the cut edge of the second end edge 121 can be further reduced. In different embodiments, the embodiments shown in FIG. 5 and FIG. 6 can be used in combination. In other words, the light shielding layer 700 can be distributed on the end surfaces of the protruding section 113 and the second end edge 121 at the same time, so as to achieve a better light leakage protection effect.

FIG. 7 shows another embodiment of a display device. In this embodiment, the light shielding layer 700 is disposed on a side of the protruding section 113 facing away from the extension plate 300. Preferably, the light shielding layer 700 further extends to overlap the projection range of the second substrate 120 on the first substrate 110 to improve the effect of light leakage protection. A portion of the light shielding layer 700 overlapping the projection range has a second width W ₂ from the second end edge 121. In a preferred embodiment, the ratio of the second width W ₂ to the first pitch G ₁ is preferably between 0.035 and 1.4. With this arrangement, the light shielding layer 700 can have a sufficient distribution area to block the light path of light leakage from the display device, and further reduce the chance of light leakage.

The present invention has been described by the above related embodiments, but the above embodiments are merely examples for implementing the present invention. It must be noted that the disclosed embodiments do not limit the scope of the invention. On the contrary, modifications and equal settings included in the spirit and scope of the scope of patent application are all included in the scope of the present invention.

Claims (13)

A display device includes: a display panel having: a first substrate; and a second substrate which is at least partially overlapped with the first substrate and has a second end edge; wherein the first substrate has a protrusion The protruding section protrudes beyond the second end edge, the protruding section has a first end edge, and a projection of the first end edge and the second end edge on a plane parallel to the first substrate has a first An interval; an extension plate disposed on the protruding section and having: an inner end edge opposite to the second end edge to sandwich an interface; and an outer end edge extending beyond the first end edge A polarizing layer covering a surface of the second substrate facing away from the first substrate and extending beyond the second end edge and covering the extension plate; and a light shielding layer covering at least part of the interface to the polarized light Layer, the projection range on the first substrate or the second substrate. The display device according to claim 1, further comprising a filling material, the filling material is disposed on one surface of the protruding section facing the extension plate, and the extension plate is provided in the protruding section by the filling material. on. The display device according to claim 1, wherein the light shielding layer is disposed on a surface of the polarizing layer facing the second substrate. The display device according to claim 1, wherein the light shielding layer is disposed on an end surface of the second end edge. The display device according to claim 1, wherein the light shielding layer is at least partially disposed on a surface of the protruding section facing the extension plate. The display device according to claim 5, wherein the light shielding layer extends between the first substrate and the second substrate. The display device according to claim 5, wherein a portion of the light shielding layer disposed in the protruding section has a first width from the second end edge, and a ratio of the first width to the first distance is between Between 0.15 and 1. The display device according to claim 1, wherein the light shielding layer is disposed on a surface of the protruding section facing away from the extension plate, and at least partially overlaps a projection range of the second substrate on the first substrate. The display device according to claim 8, wherein a portion of the light shielding layer and the second substrate overlapping the projection range of the first substrate has a second width from the second end edge, and the second width and the first width The ratio of a pitch is between 0.035 and 1.4. The display device according to claim 1, wherein the projection of the first end edge on the extension plate and the outer end edge have a second distance, and the first distance and the sum of the first distance and the second distance sum The ratio is between 0.14 and 0.88. The display device according to claim 10, wherein a ratio of the first pitch to a sum of the first pitch and the second pitch is between 0.27 and 0.85. The display device according to claim 1, wherein the Young's coefficient of the extension plate is not less than 0.5 GPa. The display device according to claim 1, further comprising an adhesive, wherein the polarizing layer protrudes beyond the outer end edge, and the sealing adhesive is disposed on the outer end edge end surface and the polarizing layer protrudes from the outer end edge portion Inside the sandwiched channel.