TWI390285B - Display panel module - Google Patents

Description

Display panel module

The present invention relates to a display panel module, and more particularly to a display panel module having a silicon-based liquid crystal panel.

In recent years, Liquid Crystal Display (LCD) has gradually replaced the traditional cathode ray tube display (CRT) because of its light weight, thin appearance, low operating voltage, power saving and no radiation. And become the mainstream of display devices. However, due to limitations in liquid crystal display (LCD) technology, most of them can only be limited to products with a display screen of 30 吋 or less. In the display screen of 30 吋 to 60 ,, the development of the original Plasma Display Panel (PDP) is most favored. However, because of its high cost, it cannot be a product acceptable to the average consumer.

Therefore, for the development direction of a large-sized display device, it is currently developing a display device using a projection technique, such as a reflective projection display apparatus and a rear projection display apparatus. Both the reflective projection display device and the rear projection display device can use a reflective liquid crystal on-silicon (LCOS) panel, wherein the liquid crystal based panel has low cost, high aperture ratio (up to 90%), and high resolution. Degrees (pixel size can be up to 12 μm or less), many manufacturers have begun to develop this technology.

FIG. 1 is a schematic diagram of a conventional display panel module. Referring to FIG. 1 , the display panel module 10 includes a 矽-based liquid crystal panel 12 and a flexible circuit board 16 electrically connected to the 矽-based liquid crystal panel 12 , wherein the flexible circuit board 16 can be used to convert the image signal to the 矽The liquid crystal panel 12 is used to display an image. The conventional display panel module 10 is directly in contact with the external environment due to the lack of a package structure.

The invention relates to a display panel module having a 矽-based liquid crystal panel, which has a surface cover disposed on the 矽-based liquid crystal panel, and the surface cover has a display opening, whereby the display opening can be accurately exposed A display area of the 矽-based liquid crystal panel. Therefore, the problems encountered by the prior art can be effectively solved.

The invention provides a display panel module comprising a substrate, a flexible circuit board, a 矽-based liquid crystal panel and a surface cover. The substrate has an adhesive region on its surface. The flexible circuit board is disposed on the substrate, and the flexible circuit board has an opening for exposing the bonding area. The 矽-based liquid crystal panel has a lower surface and an upper surface. The lower surface of the 矽-based liquid crystal panel is fixed to the bonding area of the substrate exposed by the opening by an adhesive layer, and is electrically connected to the flexible circuit board. The surface cover is disposed on the 矽-based liquid crystal panel to frame the display area of the 矽-based liquid crystal panel and shield the stray light. The surface cover has a display opening, wherein the display opening of the surface cover exposes a display area of the upper surface of the liquid crystal based liquid crystal panel.

In an embodiment of the invention, the display panel module further includes Lines. These wires are connected between the flexible circuit board and the 矽-based liquid crystal panel.

In an embodiment of the invention, the display panel module further includes a protective glue. The protective glue is disposed on the flexible circuit board and covers the wires.

In an embodiment of the invention, the material of the substrate comprises aluminum.

In an embodiment of the invention, the surface cover material comprises steel or engineering plastic.

In an embodiment of the invention, the surface cover is fixed to the 矽-based liquid crystal panel by an adhesive.

In an embodiment of the invention, both ends of the surface cover are bent downward to the substrate, and are fixed to the substrate by an adhesive.

In an embodiment of the invention, the surface cover further includes two fixed side walls connected to both side edges of the surface cover.

In an embodiment of the invention, the surface cover further includes a fixing hole for connecting an optical engine.

In an embodiment of the invention, the surface cover further includes a positioning hole for aligning a positioning mark on the upper surface of the liquid crystal display panel.

The invention further provides a display panel module comprising a substrate, a 矽-based liquid crystal panel and a surface cover. The substrate has a circuit and a bonding region on the surface of the substrate. The 矽-based liquid crystal panel has a lower surface and an upper surface, wherein the lower surface of the 矽-based liquid crystal panel is fixed to the bonding region of the substrate by an adhesive layer, and is electrically connected to the circuit of the substrate. The surface cover is disposed on the 矽-based liquid crystal panel and has a display opening, wherein the display opening of the surface cover exposes a display area of the upper surface of the 矽-based liquid crystal panel.

In an embodiment of the invention, the display panel module further includes a plurality of wires. The wires are connected between the substrate and the germanium-based liquid crystal panel, and the germanium-based liquid crystal panel is electrically connected to the substrate by the wires.

In an embodiment of the invention, the display panel module further includes a protective glue. The protective glue is disposed on the substrate and covers the wires.

In an embodiment of the invention, the material of the substrate comprises ceramic.

In an embodiment of the invention, the surface cover material comprises steel or engineering plastic.

In an embodiment of the invention, the surface cover is fixed to the 矽-based liquid crystal panel by a tape.

In an embodiment of the invention, both ends of the surface cover are bent downward to the substrate, and are fixed to the substrate by an adhesive.

In an embodiment of the invention, the surface cover further includes two fixed side walls connected to both side edges of the surface cover.

In an embodiment of the invention, the surface cover further includes a fixing hole for connecting an optical engine.

In an embodiment of the invention, the surface cover further includes a positioning hole for aligning a positioning mark on the upper surface of the liquid crystal display panel.

Based on the above, the display panel module of the present invention covers the display area of the 矽-based liquid crystal panel and shields stray light by a surface cover disposed on the 矽-based liquid crystal panel. Since the surface cover provided on the 矽-based liquid crystal panel has a display opening, the display area can be accurately exposed from the display opening of the surface cover, so that the present invention can effectively reduce the ruthenium base compared to the prior art. The cumulative tolerance of the liquid crystal panel assembled to the substrate.

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

The following is a detailed description of several preferred embodiments of the invention. The same reference numerals are used in the drawings to denote the same or similar elements.

2A is a perspective exploded view of a display panel module according to an embodiment of the invention. 2B is a perspective view of the display panel module of FIG. 2A after assembly. Referring to FIG. 2A and FIG. 2B , the display panel module 200 includes a substrate 210 , a flexible circuit board 220 , a 矽 - based liquid crystal panel 230 , and a surface cover 240 .

In detail, the substrate 210 can be used to support the bismuth-based liquid crystal panel 230 and other components. The surface of the substrate 210 has a bonding area 212, wherein the bonding area 212 may be a part of the surface of the substrate 210 or a bump on the surface of the substrate 210. Additionally, the bond area 212 can be flat or rough. In this embodiment, the material of the substrate 210 is, for example, aluminum, and the substrate 210 is, for example, a heat sink.

The flexible circuit board 220 is disposed on the substrate 210 and has a control circuit for controlling the liquid crystal based panel 230. The flexible circuit board 220 can have an opening 222 for exposing the bonding area 212 of the substrate 210.

The NMOS-based liquid crystal panel 230 has a lower surface 230b and an upper surface 230a opposite to the lower surface 230b. As shown in Figure 2A, the 矽-based liquid crystal panel The 230 has a display area 232 on the upper surface 230a and a non-display area around the display area 232. In addition, the lower surface 230b of the NMOS-based liquid crystal panel 230 is fixed to the bonding region 212 of the substrate 210 exposed by the opening 222, and is electrically connected to the flexible circuit board 220. In this embodiment, the adhesive layer 250 is, for example, a thermal conductive tape for fixing to the ruthenium-based liquid crystal panel 230 on the substrate 210 to achieve the heat dissipation effect. However, the present invention is not limited thereto, and any adhesive material that can serve as the adhesive layer 250 can be employed.

Of course, in other embodiments, the flexible circuit board 220 may not have the opening 222, and the 矽-based liquid crystal panel 230 may be fixed on the flexible circuit board 220 by the adhesive layer 250. Therefore, the structure of the flexible circuit board 220 shown in FIGS. 2A and 2B is merely illustrative and not limiting. In addition, in the embodiment, the NMOS-based liquid crystal panel 230 can be electrically connected to the flexible printed circuit board 220 by using a plurality of wires 260. The display panel module 200 further includes a protective adhesive 270 on the flexible circuit board 220 for covering the wires 260. The function of the protective glue 270 is to protect the wires 260 from damage and moisture in these wires 260.

The surface cover 240 is disposed on the 矽-based liquid crystal panel 230 for framing the display area 232 of the 矽-based liquid crystal panel 230 and shielding stray light. The surface cover 240 has a display opening 242, wherein the display opening 242 corresponds to the display area 232 of the 矽-based liquid crystal panel 230, and the display area 232 of the 矽-based liquid crystal panel 230 is exposed from the display opening 242 of the surface cover 240.

Since the surface cover 240 is disposed on the 矽-based liquid crystal panel 230 and has the display opening 242, the display area 232 can be opened from the display of the surface cover 240. Port 242 is accurately exposed. Therefore, the present embodiment can effectively solve the problem of the cumulative tolerance generated by assembling the germanium-based liquid crystal panel 230 onto the substrate 210 in the prior art.

Further, in the present embodiment, the surface cover 240 has a pair of positioning holes 244, and the 矽-based liquid crystal panel 230 has a pair of positioning marks 234 located in the non-display area. Since the surface cover 240 can be directly attached to the silicone-based liquid crystal panel 230 by, for example, tape or other suitable adhesive, the pair of positioning holes 244 can be automatically aligned with the pair of positioning marks 234, respectively. In addition, the surface cover 240 further includes a fixing hole 246, wherein the fixing hole 246 can be fixed to an optical engine to reduce the cumulative tolerance. In this embodiment, the surface cover 240 may be made of steel or engineering plastic, and in fact, a non-reflective material is more preferable.

In short, in the embodiment, the surface cover 240 can be directly fixed to the 矽-based liquid crystal panel 230, and the surface cover 240 can be directly fixed to the optical engine, so that the assembly from the 矽-based liquid crystal panel 230 to the optical engine can be effectively reduced. The cumulative tolerance of the time. Further, when the size of the surface cover 240 corresponds to the size of the liquid crystal based liquid crystal panel 230, the space occupied by the display panel module 200 can be reduced. In addition, the surface cover 240 can function as a light shield to shield the non-display area.

FIG. 3A is a perspective view of a display panel module according to another embodiment of the present invention. 3B is a cross-sectional view of the display panel module of FIG. 3A. Referring to FIG. 3A and FIG. 3B , the display panel module 200 ′ is substantially the same as the display panel module 200 illustrated in FIG. 2B , and the difference is only in the two ends 240 a ′ of the surface cover 240 ′ in FIGS. 3A and 3B . , 240b' is bent downward To the substrate 210, and fixed to the substrate 210 by an adhesive 280', the adhesive 280' can increase the bonding strength between the surface cover 240' and the substrate 210.

In detail, in the present embodiment, the both end faces 240a', 240b' of the surface cover are bent downward to a height of the substrate 210 which is smaller than the height of the thiol liquid crystal panel 230. In addition, the surface cover 240' further includes two fixed side walls 244', 246' connected to the side edges of the surface cover 240', and these fixed side walls 244', 246' can be used to increase the structural strength of the surface cover 240' and be used. To connect the optical engine. Further, the fixed side walls 244', 246' can also be attached to the optical engine by screws or adhesives.

It must be noted here that the surface covers 240, 240' described above can also be applied to other types of display panel modules. In other embodiments not shown, the display panel module includes a substrate, a 矽-based liquid crystal panel, and a surface cover. The arrangement of these elements is similar to that shown in FIG. 2A, and thus will not be described again. The difference between the display panel module and the display panel module 200 of FIG. 2A is that the substrate has a circuit, and the germanium-based liquid crystal panel does not need to be disposed on the flexible circuit board. In detail, the substrate is, for example, a ceramic material or a printed circuit board, and the substrate can be electrically connected to the control circuit by a connector. For example, the control circuit can be disposed under the substrate, and the germanium-based liquid crystal panel can be electrically connected to the control circuit through the substrate. In other words, the 矽-based liquid crystal panel can be electrically connected to the substrate without having a flexible circuit board, and the volume of the display panel module can be effectively reduced.

In summary, the display panel module of the present invention covers the display area and the cover of the 矽-based liquid crystal panel by using a surface cover disposed on the 矽-based liquid crystal panel. Cover the stray light. Since the surface cover disposed on the 矽-based liquid crystal panel has a display opening, the display area can be accurately exposed from the display opening of the surface cover, so that the present invention can effectively reduce the bismuth-based liquid crystal compared to the prior art. The cumulative tolerance of the panel assembly to the substrate.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

10‧‧‧Display panel module

12‧‧‧矽-based LCD panel

16‧‧‧Flexible circuit board

200, 200'‧‧‧ display panel module

210‧‧‧Substrate

212‧‧‧bonding area

220‧‧‧Flexible circuit board

222‧‧‧ openings

230‧‧‧矽-based LCD panel

230a‧‧‧ upper surface

230b‧‧‧ lower surface

232‧‧‧Display area

234‧‧‧Location Mark

240, 240'‧‧‧ face mask

240a', 240b'‧‧‧ both ends of the mask

242‧‧‧ Display opening

244‧‧‧Positioning holes

244’, 246’ ‧ ‧ fixed side wall

246‧‧‧Fixed holes

250‧‧‧Adhesive layer

260‧‧‧Line

270‧‧‧Protective adhesive

280'‧‧‧Adhesive

FIG. 1 is a schematic diagram of a conventional display panel module.

2A is a perspective exploded view of a display panel module according to an embodiment of the invention.

2B is a perspective view of the display panel module of FIG. 2A after assembly.

FIG. 3A is a perspective view of a display panel module according to another embodiment of the present invention.

3B is a cross-sectional view of the display panel module of FIG. 3A.

200‧‧‧Display panel module

210‧‧‧Substrate

212‧‧‧bonding area

220‧‧‧Flexible circuit board

222‧‧‧ openings

230‧‧‧矽-based LCD panel

230a‧‧‧ upper surface

230b‧‧‧ lower surface

232‧‧‧Display area

234‧‧‧Location Mark

240‧‧‧Face cover

242‧‧‧ Display opening

244‧‧‧Positioning holes

246‧‧‧Fixed holes

250‧‧‧Adhesive layer

260‧‧‧Line

270‧‧‧Protective adhesive

Claims (16)

A display panel module includes: a substrate having a bonding area on a surface of the substrate; a flexible circuit board disposed on the substrate, having an opening for exposing the bonding area; a 矽-based liquid crystal panel having a lower surface, an upper surface, and a positioning mark on the upper surface, wherein the lower surface of the 矽-based liquid crystal panel is fixed to the substrate by the adhesive layer a bonding area electrically connected to the flexible circuit board; and a surface cover disposed on the 矽-based liquid crystal panel, having a display opening and a positioning hole, wherein the display opening of the surface cover exposes the a display area of the upper surface of the liquid crystal display panel, wherein both ends of the surface cover are bent downward to the substrate, and are fixed on the substrate by an adhesive for aligning the base The positioning mark of the upper surface of the liquid crystal panel. The display panel module of claim 1, further comprising a plurality of wires connected between the flexible circuit board and the silicon-based liquid crystal panel. The display panel module of claim 2, further comprising a protective adhesive disposed on the flexible circuit board and covering the wires. The display panel module of claim 1, wherein the material of the substrate comprises aluminum. The display panel module of claim 1, wherein the surface cover comprises steel or engineering plastic. The display panel module of claim 1, wherein the surface cover is fixed to the 矽-based liquid crystal panel by an adhesive. The display panel module of claim 1, wherein the surface cover further comprises two fixed side walls connected to both side edges of the surface cover. The display panel module of claim 1, wherein the surface cover further comprises a fixing hole for connecting an optical engine. A display panel module includes: a substrate having a circuit and an adhesive region on a surface of the substrate; a 矽-based liquid crystal panel having a lower surface, an upper surface, and a positioning mark on the upper surface The lower surface of the liquid crystal display panel is fixed to the bonding region of the substrate by an adhesive layer, and electrically connected to the circuit of the substrate; and a surface cover disposed on the germanium-based liquid crystal panel Having a display opening and a positioning hole, wherein the display opening of the surface cover exposes a display area of the upper surface of the 矽-based liquid crystal panel, and both ends of the surface cover are bent downward to the substrate, and The positioning hole is used for aligning the positioning mark on the upper surface of the 矽-based liquid crystal panel by an adhesive. The display panel module of claim 9, further comprising a plurality of wires connected between the substrate and the 矽-based liquid crystal panel, wherein the 矽-based liquid crystal panel is electrically connected to the substrate by the wires . The display panel module of claim 10, further comprising a protective glue disposed on the substrate and covering the wires. The display panel module of claim 9, wherein the material of the substrate comprises ceramic. The display panel module of claim 9, wherein the surface cover material comprises steel or engineering plastic. The display panel module of claim 9, wherein the surface cover is fixed to the 矽-based liquid crystal panel by a tape. The display panel module of claim 9, wherein the surface cover further comprises two fixed side walls connected to both side edges of the surface cover. The display panel module of claim 9, wherein the surface cover further comprises a fixing hole for connecting an optical engine.