TWI480634B - Flat display - Google Patents

Description

Flat panel display

The invention relates to a flat panel display.

In recent years, liquid crystal displays (LCDs) have been widely used in various types of consumer electronic products due to their high resolution, small size, light weight, low radiation and power saving. Cathode ray tube (CRT) has become the mainstream of displays. For example, commercially available televisions, computer screens, mobile phones, and notebook computers have mostly used liquid crystal displays to display images. In other words, liquid crystal displays have become an indispensable electronic product for people at work or at leisure.

Since the liquid crystal display is a non-self-luminous display device, it is necessary to pass through the backlight module to generate a display function. In general, a liquid crystal display includes a light source, a liquid crystal panel, a light guide plate, a reflective sheet, and a holder. Most of the liquid crystal panels are bonded to the carrier frame by double-sided tape. However, since the current liquid crystal display has been trending toward thinning, the thickness of the liquid crystal panel is also reduced, so the liquid crystal panel and the backlight module are separated in heavy work. When the group carries the frame, the liquid crystal panel is often fragmented because of the adhesiveness of the double-sided tape.

The object of the present invention is to provide a flat panel display for solving the situation in which a fragment is caused by double-sided tape sticking when the display panel is reworked.

According to an embodiment of the invention, a flat panel display is provided, including a support A frame, a circuit substrate, a light source, a reflective element, a light guide, and a display panel. The bracket includes a bottom plate, a top plate, and side walls. The top plate has a plurality of ridges and a bearing portion, and the ridge portion is swelled from the edge of the bearing portion, so that the ridge portion and the bearing portion define a recessed space, wherein the ridge portion has a substantially U-shaped cross-sectional shape. The side wall connects the bottom plate and the top plate, and the bottom plate, the top plate and the side wall together define an accommodation space. The circuit substrate is disposed on the bottom plate. The light source is disposed on the circuit substrate and located in the accommodating space. The reflective element is located in the accommodating space and is interposed between the top plate of the bracket and the light source. The light guide plate is disposed on one side of the light source and is located between the circuit substrate and the reflective element. The display panel is at least partially accommodated in the recessed space.

In one or more embodiments of the invention, the vertical distance between the upper surface of the ridge and the bottom plate is greater than the vertical distance between the upper surface of the bearing portion and the bottom plate.

In one or more embodiments of the invention, the ridges connect the side walls.

In one or more embodiments of the invention, one of the ends of the reflective element contacts the sidewall.

In one or more embodiments of the present invention, the flat panel display further includes an optical film disposed between the light guide plate and the display panel, wherein the light source includes a light emitting surface facing the light guide plate, and one end of the reflective element is located on the light emitting surface and the optical film. between.

In one or more embodiments of the invention, the vertical distance between the upper surface of the ridge and the bearing portion is less than or equal to the vertical distance between the upper surface of the display panel and the bearing portion.

In one or more embodiments of the present invention, the flat panel display further includes a flexible circuit board electrically connected to the display panel, and the flexible circuit board passes between the ridges.

In one or more embodiments of the present invention, the flat panel display further includes a rigid circuit board connected to the flexible circuit board, wherein the bottom plate includes a plurality of openings and a plurality of retaining walls connected to one side of the opening, the retaining wall being away from the display panel The side extends, wherein the rigid circuit board is folded over to abut the retaining wall.

In one or more embodiments of the present invention, the flat panel display further includes a rigid circuit board connected to the flexible circuit board, wherein the bracket further comprises a carrying unit extending outward from the side wall to carry the rigid circuit board.

In one or more embodiments of the invention, the display panel is in direct contact with the abutment.

In one or more embodiments of the present invention, the flat panel display further includes at least one buffer block disposed between the display panel and the bearing portion.

In one or more embodiments of the present invention, the bottom plate includes a recess to accommodate the circuit substrate.

In one or more embodiments of the present invention, the flat panel display further includes a fixing tape, one end of the fixing tape is adhered to the circuit substrate, and the other end of the fixing tape is attached to the bottom plate, wherein the fixing tape has a reflective surface facing the display panel.

In one or more embodiments of the present invention, the flat panel display further includes a packaging tape covering the display panel and the bracket, one end of the packaging tape is attached to the display panel, and the other end of the packaging tape is attached to the bottom plate of the bracket.

In one or more embodiments of the present invention, the display panel includes a lower substrate, and the flat display further includes a plurality of spacers disposed between the packaging tape and the lower substrate.

The bracket of the flat display has a ridge on it to position the display panel on the bracket by the ridge. Bonding display surface compared to traditional double-sided tape The way of the top plate of the plate and the bracket can avoid the situation that the display panel is fragmented due to the adhesive force of the tape during heavy work. Moreover, since the bracket can be integrally formed by stamping a metal sheet, there is an advantage that the material is simple and does not add an additional process.

The spirit and scope of the present invention will be apparent from the following description of the preferred embodiments of the invention. The spirit and scope of the invention are not departed.

Referring to Figure 1, there is shown a top view of an embodiment of a flat panel display of the present invention. The flat panel display 100 includes a backlight module and a display panel 300 on the backlight module. The backlight module includes a bracket 200. The bracket 200 includes a top plate 210 having a plurality of ridges 212 and a bearing portion 214. The ridges 212 are raised from the edges of the bearing segments 214 such that the ridges 212 are defined together with the bearing segments 214. Out of the recessed space (shown in FIG. 2), the display panel 300 is at least partially located in the recessed space, and the display panel 300 is positioned by the raised portion 212 and the bearing portion 214.

Referring to Figure 2, there is shown a cross-sectional view of the first embodiment of the flat panel display of the present invention taken along line 2-2 of Figure 1. The flat panel display 100 includes a backlight module and a display panel 300 on the backlight module. The backlight module includes a bracket 200. The bracket 200 includes a top plate 210, a bottom plate 220, and sidewalls 230 connecting the top plate 210 and the bottom plate 220. The top plate 210 has a ridge portion 212 and a bearing portion 214, and the ridge portion 212 is swelled from the edge of the bearing portion 214 such that the ridge portion 212 and the bearing portion 214 together define a recessed space S1. The display panel 300 is partially housed in the recessed space S1. The display panel 300 is placed on the bearing section 214, and one end of the display panel 300 can abut the ridge 212. The display panel 300 may or may not be in substantial contact with the ridges 212. In this embodiment, the display panel 300 can be placed on the bearing section 214 of the bracket 200, and the display panel 300 is positioned by the protruding ridges 212. The display panel 300 can directly contact the bearing section 214.

The cross-sectional shape of the ridge portion 212 is substantially U-shaped. The vertical distance h1 between the upper surface of the ridge portion 212 and the upper surface of the bottom plate 220 is greater than the vertical distance h2 between the upper surface of the bearing portion 214 and the upper surface of the bottom plate 220. The ridges 212 are raised from the edge of the support section 214 that is joined to the side wall 230. The ridges 212 are connected to the side walls 230. The vertical distance h3 between the upper surface of the ridge 212 and the upper surface of the bearing section 214 is less than or equal to the vertical distance h4 between the upper surface of the display panel 300 and the upper surface of the bearing section 214. In other words, the raised portion 212 protrudes from the bearing portion 214 by a height that is no greater than the thickness of the display panel 300.

The side wall 230 connects the top plate 210 and the bottom plate 220. The top plate 210, the bottom plate 220, and the side wall 230 define an accommodating space S2 for accommodating the circuit substrate 410, the light source 420, and the light guide plate 430 in the backlight module. The circuit board 410 is disposed on the bottom plate 220. The light source 420 is disposed on the circuit board 410 and located in the accommodating space S2. The light source 420 is further electrically connected to the circuit board 410. The light guide plate 430 is located on the side of the light source 420. The light source 420 has a light exit surface 422 that faces the light guide plate 430. The light emitted by the light source 420 is transmitted through the light guide plate 430 and emitted to the display panel 300.

The material of the bracket 200 may be a metal or a metal alloy. The bracket 200 may be stamped from sheet metal such that the bottom plate 220, the side walls 230, and the top The raised portion 212 and the bearing portion 214 on the plate 210 are integrally formed, and have the advantages of simple material and simple process.

The flat panel display 100 further includes a reflective element 440 located in the accommodating space between the top plate 210 of the cradle 200 and the light source 420. The light guide plate 430 is located between the reflective element 440 and the circuit substrate 410. The reflective element 440 can be a reflective tape to prevent light from being exposed from the gap between the light source 420 and the light guide plate 430, and can further reflect light to the light guide plate 430 to improve the utilization of light. The reflective element 440 can overlap the light source 420 and a portion of the light guide plate 430 that more closely contacts the lower surface of the top plate 210 to fill the gap between the top plate 210 and the light source 420 by the reflective element 440.

The backlight module further includes at least one optical film 450. The optical film 450 is disposed on the light guide plate 430 and located between the display panel 300 and the light guide plate 430 to uniformize the light emitted to the display panel 300. The light source 420 has a light exit surface 422 facing the light guide plate 430. One end of the reflective element 440 can contact the sidewall 230 to position the reflective element 440. The other end of the reflective element 440 is located between the light exit surface 422 and the optical film 450.

Referring to Fig. 3, there is shown a cross-sectional view of a second embodiment of the flat panel display of the present invention, the cross-sectional position of which is the same as that of Fig. 2. The difference between the embodiment and the first embodiment is that the flat panel display 100 further includes at least one buffer block 460 disposed between the display panel 300 and the bearing section 214 to avoid direct collision of the display panel 300 against the bearing section 214. Damaged. The material of the buffer block 460 may be a material such as foam or rubber. The cushioning block 460 can be formed on the bearing section 214 by injection molding or pasting. It should be noted that the buffer block 460 does not have a viscosity on one side of the display panel 300 to avoid heavy The separation or damage of the display panel 300 is caused when the work is separated.

Referring to Figure 4, there is shown a cross-sectional view of a third embodiment of the flat panel display of the present invention, the cross-sectional position of which is the same as that of Figure 2. The difference between the embodiment and the first embodiment is that the flat panel display 100 further includes a reflective sheet 470 disposed between the light guide plate 430 and the bottom plate 220 for reflecting the light leaked from the light guide plate 430 back to the light guide plate. 430 to improve the utilization of light. The bottom plate 220 may further have a recessed portion 222 for receiving the circuit substrate 410. In other words, the recessed depth of the depressed portion 222 is approximately equal to the thickness of the circuit substrate 410. The flat display 100 further includes a fixing tape 480. One end of the fixing tape 480 is attached to the circuit substrate 410, and the other end of the fixing tape 480 is attached to the bottom plate 220, thereby fixing the circuit substrate 410 to the bottom plate 220 of the bracket 200. The fixing tape 480 may be an adhesive tape having a reflective function. Specifically, the fixing tape 480 has a reflective surface facing one side of the display panel 300 to reflect the light to the light guide plate 430, thereby improving the utilization of light.

Referring to Fig. 5, there is shown a cross-sectional view of a fourth embodiment of the flat panel display of the present invention, the cross-sectional position of which is the same as that of Fig. 2. The difference between this embodiment and the first embodiment is that the flat display 100 further includes a packaging tape 500 in order to position the display panel 300 on the bracket 200 more well. The packaging tape 500 covers the display panel 300 and the bracket 200. One end of the packaging tape 500 is attached to the display panel 300, and the other end of the packaging tape 500 is attached to the bottom plate 220 of the bracket 200. The display panel 300 can be more stably fixed to the holder 200 by the attaching force of the packaging tape 500.

Referring to Fig. 6, there is shown a cross-sectional view of a fifth embodiment of the flat panel display of the present invention, the cross-sectional position of which is the same as that of Fig. 2. This embodiment and the fourth embodiment The difference is that the flat display 100 further includes a spacer 510 in addition to the packaging tape 500 for fixing the display panel 300 and the bracket 200. The display panel 300 includes a lower substrate 310 on which a drive wafer 312 can be disposed. The spacer 510 is disposed between the package tape 500 and the lower substrate 310 as a buffer. The spacer 510 may be preformed on the package tape 500 to fill the gap between the drive wafers 312 by the spacers 510.

Referring to Figure 7, there is shown a partial enlarged view of a sixth embodiment of the flat panel display of the present invention. The difference between this embodiment and the first embodiment is that the flat display 100 further includes a rigid circuit board 600, and a flexible circuit board 610 connecting the display panel 300 and the rigid circuit board 600. The flexible circuit board 610 passes through the space between the ridges 212. The bracket 200 of the flat panel display 100 further includes a carrying unit 240 extending outward from the side wall 230 for carrying the rigid circuit board 600. The rigid circuit board 600 can be locked to the carrying unit 240 via a screw 620.

Figure 8 is a partial enlarged view of a stent used in a seventh embodiment of the flat-panel display of the present invention, and Figure 9 is a partial rear elevational view of the seventh embodiment of the flat-panel display of the present invention. Referring first to FIG. 8, the bracket 200 includes a top plate 210, a bottom plate 220, and side walls 230 connecting the top plate 210 and the bottom plate 220. The top plate 210 includes a ridge 212 and a bearing portion 214. The bottom plate 220 of the bracket 200 includes a plurality of openings 224, and a plurality of retaining walls 226 connected to one side of the opening 224. The retaining wall 226 extends toward a side away from the display panel. Specifically, the bottom plate 220 can form an opening 224 on the bottom plate 220 through a stamping process. The material of the retaining wall 226 is the material at the original opening 224. In other words, after the bottom plate 220 is punched out of the opening 224, the material at the original opening 224 is backward. The bend constitutes a retaining wall 226. The bottom plate 220 further has a slot 228 for The material of the backing plate 220 is saved and the weight of the backing plate 220 is reduced.

Referring again to FIG. 9, the flat panel display 100 includes a display panel 300 (the display panel 300 in the figure is a portion exposed to the slot 228 of the bracket 200), the bracket 200, the rigid circuit board 600, and the connection rigid circuit board 600 and the display panel. 300 flexible circuit board 610. The flexible circuit board 610 has flexibility and can be bent. By folding the flexible circuit board 610, the rigid circuit board 600 is folded over to abut the retaining wall 226, and the rigid circuit board 600 is positioned by the retaining wall 226. The rigid circuit board 600 can be attached to the bracket 200 via a tape. In addition, it should be noted that the flexible circuit board 610 can pass between the ridges 212 and fold back to the side of the bottom plate 220 facing away from the display panel.

It will be apparent from the above-described preferred embodiments of the present invention that the application of the present invention has the following advantages. The bracket of the flat display has a ridge on it to position the display panel on the bracket by the ridge. Compared with the conventional method of using double-sided tape to bond the display panel and the top plate of the bracket, it is possible to avoid the situation that the display panel is fragmented due to the adhesive force of the tape during heavy work. Moreover, since the bracket can be integrally formed by stamping a metal sheet, there is an advantage that the material is simple and does not add an additional process.

Although the present invention has been described above in terms of a preferred embodiment, it is not intended to limit the invention, and it is obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

100‧‧‧ flat panel display

200‧‧‧ bracket

210‧‧‧ top board

212‧‧‧Uplift

214‧‧‧Received paragraph

410‧‧‧ circuit board

420‧‧‧Light source

422‧‧‧Glossy surface

430‧‧‧Light guide

440‧‧‧reflecting elements

220‧‧‧floor

222‧‧‧Depression

224‧‧‧ openings

226‧‧ ‧ retaining wall

228‧‧‧ slotting

230‧‧‧ side wall

240‧‧‧Loading unit

300‧‧‧ display panel

310‧‧‧lower substrate

312‧‧‧Drive chip

450‧‧‧Optical film

460‧‧‧ buffer block

470‧‧‧reflector

480‧‧‧Fixed tape

500‧‧‧Packing tape

510‧‧‧ blocks

600‧‧‧hard circuit board

610‧‧‧Soft circuit board

620‧‧‧ screws

2-2‧‧‧ segments

The above and other objects, features, advantages and embodiments of the present invention will become more apparent and understood. 1 is a top view of an embodiment of a flat panel display of the present invention.

2 is a cross-sectional view of the first embodiment of the flat panel display of the present invention taken along line 2-2 of FIG. 1.

Figure 3 is a cross-sectional view showing a second embodiment of the flat panel display of the present invention.

Figure 4 is a cross-sectional view showing a third embodiment of the flat panel display of the present invention.

Figure 5 is a cross-sectional view showing a fourth embodiment of the flat panel display of the present invention.

Figure 6 is a cross-sectional view showing a fifth embodiment of the flat panel display of the present invention.

Figure 7 is a partially enlarged view showing a sixth embodiment of the flat panel display of the present invention.

Figure 8 is a partially enlarged view of the stent used in the seventh embodiment of the flat panel display of the present invention.

Figure 9 is a partial rear elevational view of a seventh embodiment of the flat panel display of the present invention.

100‧‧‧ flat panel display

200‧‧‧ bracket

210‧‧‧ top board

212‧‧‧Uplift

214‧‧‧Received paragraph

300‧‧‧ display panel

2-2‧‧‧ segments

Claims (13)

A flat panel display comprising: a bracket comprising: a bottom plate comprising a recess; a top plate having a plurality of ridges and a bearing portion, the ridges being raised from an edge of the bearing portion, such that The ridges and the bearing section define a recessed space, wherein the ridges have a substantially U-shaped cross-sectional shape, and a side wall connecting the bottom plate and the top plate, and the bottom plate, the top plate and the side wall are defined together a accommodating space; a circuit substrate disposed in the recessed portion of the bottom plate; a light source disposed on the circuit substrate and located in the accommodating space; a reflective component located in the accommodating space and interposed therebetween a light guide plate disposed between the circuit substrate and the reflective element; a display panel at least partially received in the recessed space; a reflective sheet Between the light guide plate and the bottom plate; and a fixing tape, one end of the fixing tape adheres to a surface of the circuit substrate facing the light guide plate to make the fixing tape Between the light guide plate and the circuit substrate, the other end of the fixing tape is attached to a portion of the recessed portion exposed from the circuit substrate, and the other end of the fixing tape is disposed on the recess portion and the Between the reflective sheets, wherein the fixing tape has a reflective surface facing the display panel. The flat panel display according to claim 1, wherein a vertical distance between the upper surface of the ridge portion and the upper surface of the bottom plate is greater than a vertical distance between the upper surface of the bearing portion and the upper surface of the bottom plate distance. The flat panel display of claim 1, wherein the ridges are connected to the side wall. The flat panel display of claim 1, wherein one end of the reflective element contacts the side wall. The flat-panel display of claim 1, further comprising at least one optical film disposed between the light guide plate and the display panel, wherein the light source comprises a light-emitting surface facing the light guide plate, and one end of the reflective element Located between the light exiting surface and the optical film. The flat-panel display of claim 1, wherein a vertical distance between the upper surface of the ridge and the upper surface of the bearing section is less than or equal to the upper surface of the display panel and the upper surface of the bearing section. The vertical distance between. The flat panel display of claim 1, further comprising a flexible circuit board electrically connected to the display panel, the flexible circuit board passing between the ridges. The flat panel display of claim 7, further comprising a rigid circuit board connected to the flexible circuit board, wherein the bottom plate comprises a plurality of openings and a plurality of retaining walls connecting one side of the openings, the retaining walls Extending from a side away from the display panel, wherein the rigid circuit board is folded over to abut the retaining walls. The flat panel display of claim 7, further comprising a rigid circuit board connected to the flexible circuit board, wherein the bracket further comprises a carrying unit extending outward from the side wall to carry the rigid circuit board. The flat panel display of claim 1, wherein the display panel directly contacts the bearing portion. The flat panel display according to claim 1, further comprising at least one buffer block disposed between the display panel and the bearing portion. The flat panel display of claim 1, further comprising a packaging tape covering the display panel and the bracket, one end of the packaging tape is attached to the display panel, and the other end of the packaging tape is attached to The bottom plate of the bracket. The flat panel display of claim 12, wherein the display panel comprises a lower substrate, the flat display further comprising a plurality of spacers disposed between the packaging tape and the lower substrate.