TWI451173B - Display device and fixing method of display panel thereof - Google Patents

Description

Display device and its display panel fixing method DISPLAY DEVICE AND FIXING METHOD OF DISPLAY PANEL THEREOF

The present invention relates to a display device, and more particularly to a display device capable of preventing peeling of two substrates of a display panel from each other and a method of fixing the same.

Display devices have a wide range of applications in daily life. In order to meet the various needs of consumers, display devices are gradually moving toward thin and narrow frames. 1 is a partial cross-sectional view showing a conventional liquid crystal display device. Referring to FIG. 1 , a conventional liquid crystal display device 100 includes a liquid crystal display panel 110 , a back panel 120 , a plastic frame 130 , and a backlight module 140 . The back plate 120 has a bottom portion 121 and side walls 122 connected to the bottom portion 121. The backlight module 140 and the plastic frame 130 are disposed on the bottom portion 121 , and the backlight module 140 is surrounded by the plastic frame 130 . The backlight module 140 includes a light guide plate 142, a reflection sheet 144 disposed under the light guide plate 142, a plurality of optical films 146 disposed above the light guide plate 142, and a light-emitting element (not shown) disposed beside the light guide plate 142. The plastic frame 130 has a bearing surface 131 and a side wall 132 extending upward from the edge of the bearing surface 131 and adjacent to the side wall 122. The liquid crystal display panel 110 is disposed on the carrying surface 131.

2 is a schematic view of a liquid crystal display panel of the liquid crystal display device shown in FIG. 1. Referring to FIG. 2 , the liquid crystal display panel 110 includes a first substrate 112 , a second substrate 113 stacked on the first substrate 112 , a first polarizer 114 disposed under the first substrate 112 , and disposed on the second substrate 113 . The second polarizer 115 and the sealant 116 disposed between the first substrate 112 and the second substrate 113. The first substrate 112 and the second substrate 113 are bonded by the sealant 116. The sealant 116 has a certain distance G from the edges of the first substrate 112 and the second substrate 113, and the width of the gap G is about 0.225 mm. In addition, the prior art has another liquid crystal display panel in which there is no gap between the sealant and the edges of the first substrate and the second substrate.

The first substrate 112 and the second substrate 113 of the liquid crystal display panel 110 are gradually thinned, resulting in the first substrate 112 and the second substrate, in order to make the liquid crystal display device 100 have the advantages of being thin and thin and narrow. 113 is easily bent and deformed when subjected to force. In addition, the design of the narrow bezel may result in a reduction in the area of the sealant 116, thereby reducing the adhesion between the first substrate 112 and the second substrate 113. For the above reasons, when the liquid crystal display device 100 performs the drop test, the first substrate 112 and the second substrate 113 of the liquid crystal display panel 110 are easily peeled off from each other and fail. Therefore, the reliability of the conventional liquid crystal display device 100 is poor.

The present invention provides a display device having better reliability.

The present invention further provides a method of fixing a display panel of a display device to improve the reliability of the display device.

In order to achieve the above advantages, the present invention provides a display device. The display device includes a display panel, a cover member and a gel. The cover has a surrounding wall that surrounds a plurality of sides of the display panel. The colloid is coupled between at least a portion of the side of the display panel and the surrounding wall.

In an embodiment of the invention, the display device may further include an inner frame having a bearing surface, and the display panel is disposed on the bearing surface. The surrounding wall of the covering member surrounds the inner frame, and the colloid is further connected to the bearing surface. In addition, the display panel may include a first substrate and a second substrate stacked on the first substrate. The first substrate has a joint portion that is not covered by the second substrate, and the bearing surface of the inner frame is provided with a bearing portion, and the joint portion bears against the bearing portion. Furthermore, the joint portion may have a plurality of corners, and the bearing portion is provided with a plurality of retracting structures corresponding to the corners to prevent the corners from contacting the bearer portion. Moreover, the display device may further include a surface light source module disposed under the display panel and surrounded by the inner frame, the cover member further has a bottom portion, the surrounding wall is connected to the bottom portion, and the surface light source module and the inner frame are disposed on the bottom portion. .

In an embodiment of the invention, the cover member further has a bearing surface, and the surrounding wall is connected to the bearing surface, and the display panel is disposed on the bearing surface. In addition, the display device may further include a surface light source module disposed under the display panel and surrounded by the covering member. In addition, the display device may further include a back plate, and the surface light source module and the covering member are disposed on the bottom of the back plate. Furthermore, there is a gap between each side of the display panel and the surrounding wall, and the colloid is disposed in the gap. Moreover, each side of the display panel, for example, contacts the surrounding wall, and the display panel has a plurality of corners, and the surrounding wall is provided with a plurality of retracting structures corresponding to the corners to prevent the corners of the display panel from contacting the surrounding wall, and the colloid is connected to the The retracted structure is between these corners of the display panel.

The present invention also provides a method for fixing a display panel of a display device, comprising the steps of: firstly providing a display device, the display device comprising a display panel and a covering member having a surrounding wall surrounding a plurality of sides of the display panel Next, a colloid is applied between at least a portion of these sides of the display panel and the surrounding wall.

In the display device of the present invention and the method for fixing the display panel, since the colloid is connected between at least a part of the side surface of the display panel and the surrounding wall, the bonding force between the two substrates of the display panel can be improved, thereby preventing two The sheet substrates are separated from each other, which makes the display device of the present invention have better reliability.

The above and other objects, features and advantages of the present invention will become more <RTIgt;

3 is a top plan view of a display device according to an embodiment of the present invention, and FIG. 4 is a cross-sectional view taken along line A-A of FIG. Referring to FIG. 3 and FIG. 4 , the display device 200 of the embodiment includes a display panel 210 , a covering member 220 , and a colloid 230 . The cover member 220 has a surrounding wall 221 surrounding a plurality of side faces 211 of the display panel 210, and the colloid 230 is coupled between at least a portion of the side surface 211 of the display panel 210 and the surrounding wall 221 . That is, the colloid 230 may be connected between each side surface 211 of the display panel 210 and the surrounding wall 221 or only between the partial side surface 211 of the display panel 210 and the surrounding wall 221 . In the present embodiment, the colloid 230 is connected between the three side faces 211 of the display panel 210 and the surrounding wall 221, for example. Further, although the colloid 230 of the present embodiment has a plurality of strips, the present invention does not limit the coating method of the colloid 230. In other embodiments, the colloid 230 may be applied in a dot shape. In addition, the colloid 230 may be a thermosetting colloid, a photocurable colloid (such as an ultraviolet curable colloid), a colloid having both heat curing and photocuring properties, or other suitable colloid.

In the embodiment, the display device 200 may further include an inner frame 240 having a bearing surface 241 , and the display panel 210 is disposed on the bearing surface 241 . The surrounding wall 221 of the covering member 220 surrounds the inner frame 240, and the colloid 230 is further connected to the bearing surface 241. In addition, the display panel 210 of the present embodiment is, for example, a non-self-luminous display panel (such as a liquid crystal display panel). Therefore, the display device 200 can further include a surface light source module 250 for providing a display light source to the display panel 210. The surface light source module 250 is disposed below the display panel 210 and surrounded by the inner frame 240. The cover member 220 has a bottom portion 222 , and is connected to the bottom portion 222 around the wall 221 , and the surface light source module 250 and the inner frame 240 are disposed on the bottom portion 222 . The surface light source module 250 includes, for example, a light guide plate 252, a reflection sheet 254 disposed under the light guide plate 252, a light-emitting element (not shown) disposed beside the light guide plate 252, and at least one optical film 256 disposed above the light guide plate 252. The present embodiment is exemplified by a plurality of optical films 256. Each optical film 256 can be a crepe, a diffuser or other form of brightness enhancing sheet. In addition, in the embodiment in which the display panel 210 is a self-luminous display panel, the surface light source module 250 may be omitted.

FIG. 5 is a schematic perspective view of a region B in FIG. 3. Referring to FIG. 4 and FIG. 5 , the display panel 210 of the embodiment includes a first substrate 212 and a second substrate 213 stacked on the first substrate 212 . The first substrate 212 has a joint portion 212a that is not covered by the second substrate 213. A wiring unit (not shown) is disposed on the joint portion 212a for electrically connecting to the external driving component. In addition, the bearing surface 241 of the inner frame 240 is provided with the bearing portion 242 , and the joint portion 212 a of the first substrate 212 bears against the bearing portion 242 . The joint portion 212a has a plurality of corners 212b, and the bearing portion 242 is provided with a plurality of constricted structures 242a corresponding to the corners 212b to prevent the corners 212b from contacting the bearer portion 242. In other words, the retracting structure 242a can prevent the corner 212b of the engaging portion 212a from contacting the bearing portion 242, thereby preventing the joint portion 212a from being damaged. In addition, the bearing portion 242 is provided with a plurality of retracting structures 242a corresponding to the corners 212b such that a gap exists between the corners 212b and the bearing portion 242 for coating the colloid 230. That is, the colloid 230 is coupled between the constricted structure 242a and the corner 212b of the display panel 210.

The fixing method of the display panel 210 used in the embodiment includes applying a colloid 230 between at least a portion of the side surface 211 of the display panel 210 and the surrounding wall 221 to connect the colloid 230 to the partial side surface 211 and the surrounding wall 221 of the display panel 210. Therefore, the first substrate 212 of the display panel 210 and the second substrate 213 can be tightly coupled. Moreover, the display panel 210 is fixed to the surrounding wall 221 by the colloid 230, so the display panel 210 does not easily shake in the surrounding wall 221. Therefore, the fixing method of the display panel 210 used in the embodiment can effectively prevent the first substrate 212 and the second substrate 213 from being separated from each other. Therefore, the display device 200 of the embodiment has better reliability.

The display panel 210 may further include a first polarizer 214 disposed under the first substrate 212 and a second polarizer disposed above the second substrate 213. 215 and a sealant 216 disposed between the first substrate 212 and the second substrate 213. The frame glue 216 extends to the edges of the first substrate 212 and the second substrate 213, for example, but the invention is not limited thereto. In other embodiments, the sealant may form a certain distance from the edges of the first substrate and the second substrate. . In addition, the display device 200 may further include an adhesive tape 260 disposed between the inner frame 240 and the bottom portion 222 of the cover member 220, and the light shielding tape 270 disposed on the bearing surface 241 of the inner frame 240 and the display panel 210. Between the colloids 230.

FIG. 6 is a partial cross-sectional view showing a display device according to another embodiment of the present invention. Referring to FIG. 6 , the display device 300 of the present embodiment includes a display panel 310 , a cover member 320 , and a colloid 330 . The cover member 320 has a surrounding wall 321 surrounding a plurality of side faces 311 of the display panel 310, and the colloid 330 is coupled between at least a portion of the side 311 of the display panel 310 and the surrounding wall 321 .

The cover member 320 of the present embodiment has, for example, a bearing surface 322 connected to the bearing surface 322 by a surrounding wall 321 , and the display panel 310 is disposed on the bearing surface 322 . A gap exists between each side 311 of the display panel 310 and the surrounding wall 321, and a colloid 330 is disposed in the gap. In the embodiment in which the display panel 310 is a non-self-luminous display panel, the display device 300 may further include a surface light source module 350 disposed under the display panel 310 and surrounded by the cover member 320 to provide a display light source to the display panel 310. . The surface light source module 350 is similar to the above-described surface light source module 250 and will not be described in detail herein. In addition, the display device 300 of the present embodiment may further include a back plate 340 having a bottom portion 341, and the surface light source module 350 and the cover member 320 are disposed on the bottom portion 341 of the back plate 340.

Similar to the fixing method of the display panel 210 of the display device 200 described above, In this embodiment, since the colloid 330 is applied between at least a portion of the side surface 311 of the display panel 310 and the surrounding wall 321 , the first substrate 312 and the second substrate 313 of the display panel 310 can be effectively prevented from being separated from each other. Therefore, the display device 300 of the present embodiment has better reliability.

FIG. 7 is a partial perspective view of a display device according to another embodiment of the present invention. Referring to FIG. 7 , in the display device 400 of the present embodiment, each side surface 411 of the display panel 410 contacts the surrounding wall 421 of the cover member 420 . The display panel 410 has a plurality of corners 412 (only one is shown in FIG. 7 ), and a plurality of retracting structures 421 a corresponding to the corners 412 are disposed around the wall 421 to provide a gap between the corners 412 and the surrounding wall 421 for The colloid 430 is applied. That is, the colloid 430 is connected between the contraction structure 421a and the corner 412 of the display panel 410.

Similar to the method of fixing the display panel 210 of the display device 200 described above, the embodiment also applies a colloid 430 between at least a portion of the side surface 411 of the display panel 410 and the surrounding wall 421. Although the embodiment only applies the colloid 430 between the corner 412 of the display panel 410 and the retracting structure 421a surrounding the wall 421, the display device 400 of the embodiment can be used by the colloid 430 compared with the prior art. The bonding force between the first substrate and the second substrate of the display panel 410 is increased to prevent the first substrate and the second substrate from being separated from each other. Therefore, the display device 400 of the present embodiment has better reliability.

In addition, similar to the display device 300 described above, the display device 400 of the present embodiment may further include a surface light source module (not shown) and a back plate 440. The cover member 420 and the surface light source module are disposed at the bottom of the back plate 440. on.

In summary, the display device of the present invention and the method of fixing the display panel thereof have at least the following advantages:

1. In the display device of the present invention and the method of fixing the display panel thereof, since the colloid is connected between at least a part of the side surface of the display panel and the surrounding wall, The bonding force between the two substrates of the display panel is raised to prevent the two substrates from separating. Thus, the display device of the present invention can be made to have better reliability.

2. In an embodiment of the display device of the present invention, the colloid is disposed to increase the bonding force between the two substrates of the display panel to prevent the two substrates from separating from each other. In addition, since the two layers of the display panel are not easily separated, it is advantageous to select a substrate having a thin thickness to make the display panel lighter and thinner.

3. The bonding force between the two substrates of the display panel can be improved by the arrangement of the colloid, so the coating area of the sealant between the two substrates can be reduced, so that the display device of the present invention can meet the design requirements of the narrow bezel .

While the present invention has been described in its preferred embodiments, the present invention is not intended to limit the invention, and the present invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application.

100‧‧‧Looking liquid crystal display device

110‧‧‧LCD panel

112‧‧‧First substrate

113‧‧‧second substrate

114‧‧‧First Polarizer

115‧‧‧Second polarizer

116‧‧‧Box glue

120‧‧‧back board

121‧‧‧ bottom

122‧‧‧ side wall

130‧‧‧ plastic frame

131‧‧‧ bearing surface

132‧‧‧ side wall

140‧‧‧Backlight module

142‧‧‧Light guide

144‧‧‧reflector

146‧‧‧Optical diaphragm

200, 300, 400‧‧‧ display device of the invention

210, 310, 410‧‧‧ display panels

211, 311, 411‧‧‧ side

212, 312‧‧‧ first substrate

212a‧‧‧ joint

212b, 412‧‧‧ corner

213, 313‧‧‧ second substrate

214‧‧‧First polarizer

215‧‧‧Second polarizer

216‧‧‧Box glue

220, 320, 420‧‧ ‧ coverings

221, 321, 421‧‧ ‧ around the wall

222‧‧‧ bottom

230, 230', 330, 430‧‧ ‧ colloid

231‧‧‧Colloid coating device

240‧‧‧ inside frame

241, 322‧‧ ‧ bearing surface

242‧‧‧Responsible Department

242a, 421a‧‧‧ contraction structure

250, 350‧‧‧ surface light source module

252‧‧‧Light guide

254‧‧‧reflector

256‧‧‧Optical diaphragm

260‧‧‧ Tape

270‧‧‧Lighting tape

340, 440‧‧‧ Backplane

341‧‧‧ bottom

1 is a partial cross-sectional view showing a conventional liquid crystal display device.

2 is a schematic view of a liquid crystal display panel of the liquid crystal display device shown in FIG. 1.

FIG. 3 is a top plan view of a display device according to an embodiment of the invention.

Figure 4 is a cross-sectional view taken along line A-A of Figure 3.

FIG. 5 is a schematic perspective view of a region B in FIG. 3.

FIG. 6 is a partial cross-sectional view showing a display device according to another embodiment of the present invention.

FIG. 7 is a partial perspective view of a display device according to another embodiment of the present invention.

200. . . Display device

210. . . Display panel

211. . . side

212. . . First substrate

213. . . Second substrate

214. . . First polarizer

215. . . Second polarizer

216. . . Frame glue

220. . . Covering piece

221. . . Around the wall

222. . . bottom

230. . . colloid

240. . . Inner frame

241. . . Bearing surface

250. . . Backlight module

252. . . Light guide

254. . . A reflective sheet

256. . . Optical diaphragm

260. . . tape

270. . . Shading tape

Claims (5)

A display device includes: a display panel, the display panel includes a first substrate; and a second substrate stacked on the first substrate, the first substrate has a joint portion not covered by the second substrate; The inner frame has a bearing surface, the display panel is disposed on the bearing surface, the bearing surface is provided with a bearing portion, and the engaging portion bears against the bearing portion; a covering member has a surrounding wall, Surrounding the inner frame and the plurality of sides of the display panel; and a colloid disposed between the inner frame and the surrounding wall and extendingly connected to the bearing surface. The display device of claim 1, wherein the joint has a plurality of corners, and the bearer has a plurality of retracting structures corresponding to the corners to prevent the corners from contacting the bearer . The display device of claim 1, further comprising a light source module disposed under the display panel and surrounded by the inner frame, the cover member further having a bottom, the surrounding wall being connected to the bottom, And the surface light source module and the inner frame are disposed on the bottom. The display device of claim 2, wherein the colloid is extendedly connected between the retracting structures and the corners of the display panel. A method for fixing a display panel of a display device, comprising: providing a display panel, the display panel including a first substrate and an overlay a second substrate of the first substrate, the first substrate has a joint portion not covered by the second substrate; an inner frame is provided, and a bearing surface is provided, and the bearing surface is provided with a bearing portion, and the display portion is provided Forming a panel on the bearing surface and bearing the joint portion to the bearing portion; providing a covering member having a surrounding wall for surrounding the inner frame and the display panel And providing a colloid, the colloid being coated between the inner frame and the surrounding wall and further extendingly connected to the bearing surface.