TW200420965A - Liquid crystal display device - Google Patents

Abstract

A liquid crystal display (LCD) device primarily comprises a liquid crystal panel installed between a first frame and a second frame. The first surface of the liquid crystal panel consists of a display area and the second surface of the liquid crystal panel consists of a protruded part. The first frame contains a wall roughly surrounding the liquid crystal panel and the wall of the first frame provides a rib closely next to the sides of the liquid crystal panel. The second fame has a first part covering the bordering area of the first surface of the liquid crystal panel and a second part combining with the wall of the first frame. The rib is in touch with the first part of the second frame and provides a concave place to accommodate the protruded part of the sides of the liquid crystal panel, for instance, the sealant used to seal the filling entrance of liquid crystal material. Based on the LCD device of the invention, install a tape located between the first part of the second frame and the liquid crystal panel, in which the first part of the second frame can be further classified as a first area and a second area, and the first area goes through the tape to contact with the liquid crystal panel, there is a gap formed between the second area and the first surface of the liquid crystal panel, so as to simultaneously locate the protruded part of the second surface at the second area.

Description

200420965 V. Description of the invention (l)-[TECHNICAL FIELD OF THE INVENTION] The present invention relates to a liquid crystal display device. [Previous technology] In order to minimize and reduce power consumption, the flat panel displays introduced include liquid crystal displays, plasma display panels (PDP; Plasma Display Panel), and electroluminescent displays (ELD; Electroluminescent Display). And vacuum luminescence display Is (VFD; Vacuum Fluorescent Display). Among these flat panel displays, due to the high image quality and low power consumption, despite some shortcomings, R & D activities for liquid crystal displays are still the most active. Knife, ¥ LCD device 1 〇 will be described in conjunction with Figure 1 _ 3 below. Fig. 1 shows a conventional liquid crystal flat display, which is mainly composed of a board 100, a backlight unit 101, and a driving circuit board 02. The backlight unit 101 includes a luminescent lamp 104, a lamp _ frame 106, a light guide plate 108, and a reflection plate 11, which reflects incident light from a horizontal direction to a vertical direction, and a protection. The plate 112 is in contact with the light guide plate 108, the first cymbal plate 114 and a second cymbal plate 116 are placed on the protection plate 12 and a diffused state 118 directs light from the first and second yoke 114, 116 diffuses to a display area 120 of the liquid crystal panel 100 at a certain viewing angle. The liquid crystal display device includes a first frame 122 and a second frame 124 combined with the first frame 12 to support the liquid crystal panel 100 and the backlight unit 101. The first frame 122 generally has a wall 123 standing near the liquid crystal panel Γ 〇 0 and the backlight unit 101. Referring to FIG. 2, the liquid crystal display device 丨 〇 often uses a back case 丨 3 〇

200420965 V. Description of the invention (2) and a case 1 3 4 combined with, for example, a laptop computer as an output screen. The outer case 22 of the liquid crystal display 10 is a fixing element such as a screw 132 embedded in the back case 130 and the front case 34. The front case 134 has a blank area adjusted to the visible area. Figure 3 is a sectional view taken along line 3-3 of Figure 2. As shown in the figure, the first portion 124a of the second frame 124 covers an edge region of the surface of the liquid crystal panel 100, the second portion 124b of the second frame 124 has a plurality of holes 138, and the wall 123 of the housing 122 There are a plurality of protrusions 136 for engaging in the holes 1 3 8 of the second frame 1 2 4. The protrusions 1 3 6 of the casing 1 2 2 are engaged with the holes 1 3 8 of the second frame 1 2 4 so that the casing 1 2 2 and the second frame 1 2 4 are combined with each other. It is worth noting that the wall 1 2 3 of the casing 22 and the first portion 124a of the second frame 124 are spaced apart. Therefore, when the liquid crystal display 10 is subjected to an environmental test, especially a vibration test, the second frame 1 2 4 first part 1 2 4 a may be deformed and touch the surface of the liquid crystal panel 100, and The surface of the liquid crystal panel 1000 has an adverse effect, such as causing uneven thickness of the liquid crystal layer and causing color unevenness (Mura) defects. [Summary of the invention] The object of the present invention is to provide a liquid crystal display device which can overcome or at least improve the problems of the foregoing prior art. Another object of the present invention is to provide a liquid crystal display device having a special design to ensure external force, for example, when the liquid crystal display is subjected to a vibration test, the vibration force does not directly transmit to the liquid crystal of the liquid crystal panel of the liquid crystal display device Fill in the material. The liquid crystal display device according to the general aspect of the present invention mainly includes a

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ZUU4ZUy〇D 5. Description of the invention (3) The first surface of the LCD panel is provided with a dog-shaped portion. Xi Chu board, the second. Side. The first marginal area and the areas indicated by the first and the second part of the frame. Yu Jie Tian was part of the brother, so the board was shaken during the test. However, this liquid is used as a sealant for the panel _ mouth. Because the rib wall depression is attached, according to the present belt is located in the first domain of the second pivot second frame, and the second area of the first region and the liquid make the second surface In addition, the second liquid crystal panel protrudes' The first area is in contact with a first crystal panel, and the first frame and a first display area, the liquid pivot frame has a wall (wa 1 wall has a rib wall (r frame has a first part second part and The first boundary defines a first frame when the edge of a frame of the liquid first frame protrudes, and it is a rib wall exit of a wall of a rib display of a wall of a display window of the invention. For example, there is no ribbed wall on the side of the LCD panel plus the liquid crystal frame of the embodiment. 1) Approximately ib) The frame is tightly covered to accommodate the wall. The top wall and the surrounding wall may be provided with a protrusion for dense edges to protect the crystal. between. The second surface surrounds the liquid and is adjacent to the liquid crystal 'night crystal panel wall. The liquid crystal surface is tested in the second environment, and the liquid crystal mask protects the liquid crystal mask near the liquid crystal material outlet. The liquid crystal mask has a crystal surface panel on the surface of the second plate, especially the crystal surface. That is, the first part of the frame can pass through the tape and the first part of the protruding frame of the first surface of the crystal panel, wherein the second part of the first frame can be provided with an adhesive A portion between the part and the liquid crystal panel is further divided into a first area and a gap is formed between the contact with the liquid crystal panel; the part is located in the second area. Have to

At the same time, and the first area is less than a protrusion of the liquid crystal panel facing the portion, it can be further divided into a first surface of the liquid through the protrusion.

200420965 V. Description of the invention (4) Form a gap Domain 0

At the same time, the protruding portion of the second surface is located in the second area. Therefore, when the liquid crystal is powered, the tape or cap will not be directly transmitted to the sealing of the material filling inlet. [Embodiment] The indicator is subjected to an external force. Some of the protruding parts of the liquid crystal panel, such as the shock during the vibration test, can ensure that the external force is used to seal the liquid crystal, for example. Although the present invention can be embodied in different forms, the drawings are shown and explained below. This is a preferred embodiment of the present invention, and it should be understood that those disclosed herein are examples of the present invention and are not intended to limit the present invention to the specific embodiments illustrated and / or described.

A liquid crystal display device 200 according to an embodiment of the present invention will be described below with reference to FIGS. 4 to 6. The 50-day-liquid daily display device 200 mainly includes a first frame 210, a liquid crystal panel 230 on the first frame 210, and a second frame 240 combined with the first frame 210. The liquid crystal panel 23 is housed therebetween. The second frame 240 and the first frame 21 are generally coupled to each other by using several fasteners such as screws 260. The liquid crystal panel 23 may have a liquid crystal layer disposed between a pair of upper and lower substrates for displaying images. The liquid panel 2 30 has a first surface 232 and a second surface 234 that are substantially perpendicular to each other. A first surface 232 of the liquid crystal panel 230 has a display area. The liquid crystal panel 2 3 0 may be provided with a reflective surface (for example, ~ Shao or a silver reflector (ref 1 ect οr)), which reflects light to illuminate the liquid crystal panel 2 3 0 'and retains light incident on the reflective surface. Polarization orientation. Although reflective displays meet low

00686.ptd Page 8 200420965 V. Description of the Invention (5) Demand for power consumption, however, its images are often dark and difficult to view. Therefore, when the intensity of the ambient light is not sufficient to view the image, an auxiliary light source (such as a backlight unit 220) is often used to illuminate the liquid crystal panel 230. Referring to FIG. 4, the backlight unit 220 generally includes a lamp tube 222, a reflective film 224, a light guide plate 226, and an optical film 228 for emitting the lamp tube 222. The light is uniformly emitted to the liquid crystal display panel 2 3 0. The lamp tube 2 2 2 is generally arranged in a lamp fixture (not shown in the figure). The first frame 2 1 0 has a wall (wa 1 1) 2 1 2 approximately surrounding the liquid crystal panel 2 30, and the wall 212 of the first frame has a rib 2 12a adjacent to the second surface of the liquid crystal panel. 234 (see Figure 5). The second frame 240 is generally made of a metal material (preferably integrally formed), and has a first portion 240a covering an edge region of the first surface 232 of the liquid crystal panel 23 and a second portion 240b and The wall 212 of the first frame 210 is combined. The first portion 240a of the second frame 240 defines a display window for receiving a display area of the liquid crystal panel. Since the rib wall 212a of the wall 21 of the first frame 21 is against the first portion 2 40a of the second frame 240 (see FIG. 5), when the liquid crystal display is subjected to environmental testing, Especially during the vibration test, the rib wall 21 2a of the wall 212 of the first frame 21 can protect the liquid crystal panel 230. In the manufacturing process of the liquid crystal panel of the present invention, two glass substrates are bonded with a sealing material, and a liquid crystal (LC) material is injected into a small space between the two substrates. Next, a polarizer (p0a r i z ng f i ms) is attached to the outside of each substrate 'and a driving electronic printed circuit board () is installed.

00686.ptd 200420965 V. Description of the invention (6) In detail, the assembly of the glass substrate can be divided into the following steps: First, a kind of bonding is completed by silk screening or screen pr inti ng. Coating of flexible sealing materials. An opening is left in the sealing material for injecting liquid crystal material in subsequent processes. After the assembly process is completed, the assembled glass substrate is cut into individual liquid crystal display units, and then the liquid crystal material is injected. After the excess liquid crystal is wiped off from the edge of the cell, a sealant such as epoxy resin is applied to seal the liquid crystal material injection port. Referring to FIG. 4 and FIG. 6, in this embodiment, the liquid crystal panel 2 30 has two liquid crystal material injection ports'. Therefore, the sealant will form two protrusions 230a on the second surface 234 of the liquid crystal panel. Since the protruding portion 2 3 0 a of the liquid crystal panel 230 is received in the recessed portion 2 1 2 b of the rib wall 2 1 2 a, a region near the protruding portion 230 a on the first surface 232 of the liquid crystal panel 230 , That is, the rib wall near the recess 2 1 2b, there is no rib wall for protection. However, since the part of the liquid crystal panel 230 near the liquid crystal material injection port is more fragile than other parts, when the liquid crystal display is subjected to environmental tests, especially vibration tests, it is often observed that 240 The first portion 240a deforms and touches the area on the first surface of the liquid crystal panel 230 near the protrusion 230a, resulting in uneven color (Mura) (-generally defined as the same as Different or abnormally illuminated areas around (pixels on the substrate) 'which is also known as Brightness Unevenness (Brightness

Non-Uniformity (BNU)) 〇 Therefore, the liquid crystal display device 2000 according to the present invention is provided with two adhesive tapes 250 located between the first portion 24a of the second frame 240 and the liquid crystal panel 23o.

200420965 V. Description of the invention (7) ---------- and 4 ^ 咿 2 5 0 is set corresponding to the depression 2 1 2 a of the rib wall 2 1 2 a so that the first frame There is a gap between the first part 24oa of the wood 240 and the LCD panel 23o. The upper part 230 is close to the area, thereby ensuring that the younger part of the younger man will not touch the liquid crystal. A region on the first surface of the panel 23 near the protrusion 23a. The adhesive tape 25 is preferably fixed to the second portion 240a of the second frame 240. The second frame 24 and the second port M 2a can be further divided into a first area (the area covered by the adhesive tape 25) and a first area, and the first area is in contact with the liquid crystal panel through the adhesive tape. The second area of the 1111 is in a gap with the first surface 2 3 2 of the liquid crystal panel 230, so that the protruding portion 23 of the second surface 234 is located in the first area. Although in this embodiment, the liquid crystal display device 2000 is provided with two adhesive tapes 250, if necessary, the liquid crystal panel of the present invention may include only one adhesive γ25, corresponding to one of the two recesses 212b of the rib wall 212a. Settings. A liquid crystal display device 300 according to another embodiment of the present invention will be described below with reference to FIGS. 7 to 9. In addition to the first portion 240a of the second frame 240 having exaggerated, protruding 310 to replace the tape 25o, the liquid crystal display device 300g: and the liquid crystal display shown in FIGS. 4-6 The device 200 is approximately the same. There is a height difference between the first surface 240a of the second frame facing the lower surface of the liquid crystal panel and the contact surface of the protrusion 31o and the liquid crystal panel. In detail, the protrusion 3 1/0 can be advantageous ^ Formed by a stamping operation applied to the first portion 24o of the second frame. It is worth noting that the protrusion 3 丨 0 protrudes toward the first surface 232 of the liquid crystal panel 2330, and corresponds to the rib. A recess 212b of the wall 212a is provided, whereby the first portion 24a of the second frame 240 except for the protrusion

200420965

There is a gap between the outer surface and the first surface 232 of the liquid crystal panel 2 30 in the vicinity of the protruding portion 230a. The first portion 240 of the second frame 24 can be further divided into a first area (the area where the protrusion 3 10 is located) and a second area, and the first area is transmitted through the protrusion 3 10 and the liquid crystal panel. Contact, and a gap is formed between the second region and the first surface 232 of the liquid crystal panel 230, and at the same time, the protruding portion 2 3 0 a of the second surface 2 3 4 is located in the first region. Although in this embodiment, the liquid crystal display device 300 has no two protrusions 3 1 0, the liquid crystal panel of the present invention may include only one protrusion 310 corresponding to one of the two recesses 212 b of the rib wall 212 a if necessary. . It is worth noting that the protrusion 310 or the adhesive tape 250 of the first portion 240a of the second frame 240 cannot protrude from the liquid crystal panel too close to the liquid crystal panel protruding portion 230a (such as a sealant used to seal the liquid crystal material into the inlet). The portion 2 3 0a causes an adverse effect, such as transmitting an external force (such as a vibration force during a vibration test) to the protruding portion 230a of the liquid crystal panel. However, the protrusion 310 or the adhesive tape 250 cannot be too far away from the liquid crystal panel protruding portion 230a, otherwise it may not be effectively ensured that an external force is not directly transmitted to the portion of the liquid crystal panel. Therefore, the minimum distance between the protrusion 310 or the adhesive tape 250 and the protrusion 2 $ ^ of the liquid crystal panel is 5 ~ 30 mm, preferably 8 · 65 ~ 20 mm. In addition, the minimum distance between the protrusion 310 or the tape 250 and the edge of the first portion 240a of the second frame 240 is 0.3 mm to 0.5 mm, and the length of the protrusion 310 or the tape 250 may be 5 to 15 mm. The first frame 2 10 and the second frame 2 40 are generally provided with a plurality of screw holes for the screws 2 60 to pass through. When the screw hole is provided corresponding to the first frame

200420965 V. Description of the invention (9) When the position of the depression 212b of the 210 rib wall 212a is not protected by the rib wall 212a, it is easy to cause the first frame 2 1 0 to be in the depression when the screw 2 60 is locked. 2 1 2 b Deformed screw hole. Therefore, the adhesive tape 250 and the protrusion 310 of the second frame 240 according to the present invention are preferably provided corresponding to the screws 260 near the recess 2 12b. Although in the above embodiments, the liquid crystal panel has two liquid crystal material injection ports, the liquid crystal panel used in the present invention may include any number of liquid crystal material injection ports if necessary. For example, the small size LCD surface 3 is called? In general only

It has a liquid crystal material injection port, so the first frame rib wall has only two depressions to receive the protrusions formed by the sealant. When a concave liquid crystal display according to the present invention is subjected to the vibration force during the vibration test described above, if the force 2 of the tape or the first part of the second frame can ensure that the external force is not directly transmitted to the protrusion of the liquid crystal panel, such as Sealant used to seal the inlet of liquid crystal material. Although the present invention has been disclosed in the foregoing preferred embodiments, it is the invention of this invention. Any person skilled in the art will not depart from the scope of the invention, but can make various changes and modifications. The spirit and scope of ^ shall be determined by the scope of the attached patent application. * Protection range

200420965 Brief description of the drawings [Simplified description of the drawings] Figure 1: It is a perspective view of the structure of a conventional liquid crystal display device; Figure 2: It is a front, back and combination structure of the liquid crystal display device shown in Figure 1 3D perspective view; FIG. 3 is a sectional view taken along line 3-3 of FIG. 2; FIG. 4 is a perspective view of the structure of a liquid crystal display device according to an embodiment of the present invention; FIG. 5 : Is a sectional view of the liquid crystal display device shown in FIG. 4, which shows a rib wall against a second frame; FIG. 6: is a sectional view of the liquid crystal display device shown in FIG. 4, It shows that a glue container is placed in the recess of the rib wall; Figure 7 is a perspective view of the structure of a liquid crystal display device according to another embodiment of the present invention; Figure 8 is a view shown in Figure 7 A partially enlarged view of the liquid crystal display device; and FIG. 9 is a sectional view of the liquid crystal display device shown in FIG. 7.

Drawing number description: 101 backlight unit 104 cold light lamp 108 light guide plate 112 protection plate 116 second fascia plate 10 liquid crystal flat display 10 0 liquid crystal panel 102 circuit board 106 lamp housing 110 reflection plate 114 first prism plate

00686.ptd Page 14 200420965 Brief description of the diagram 118 Diffuser 120 Visible area 122 Housing 123 Wall 124 Second frame 200 LCD display device 210 First frame 212 Wall 212a Rib wall 212b Depression 220 Backlight unit 222 Light tube 224 Reflection Film 226 light guide plate 228 optical film 230 liquid crystal panel 232 first surface 234 second surface 2 30a protrusion 240 second frame 2 40a portion 240b portion 250 tape 260 screw 300 liquid crystal display device 310 protrusion

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Claims (1)

200420965 VI. Application for Patent Scope 1. A liquid crystal display device comprising: a liquid crystal panel having a first surface and a second surface, the first surface of the liquid crystal panel having a display area, and the second surface of the liquid crystal panel having a protruding wall 1 There is a frame frame, the first surface of the plate, the liquid crystal, the ring, and the ribs on the large wall. There is a frame frame with two frames. A frame is recessed. A surface with a wall frame. The cover of the liquid crystal on the surface of the plate is exposed to the plate, and the plate touches the plate; it is in contact with the middle surface and is in the area of the crystal and the plate area. The first part and the second part of the partition wall panel in the liquid one are the crystal frame of the panel frame and the sub-table, and the second part of the liquid crystal is in the liquid crystal of the frame mouth. The passing part is shown next to the one part of the transparent plate and the parting wall of the tightening part and the part of the area crystal wall, and the recessed frame of the liquid surface of the second part of the trap frame One of the two parts of the table The first part of the wall, the first part of the field, the first rib, the second part, and the second part; and the second part of the field, the second part of the field, the second part of the field, the second part of the field, and the second part of the field. Shows the second and second glue, and the same two shows the first and the first, the first, the first, the first and the second. The device should display the liquid crystal with a contact gap. 1 ± according to Finishing agent seal-Fill in this information with interest D input. Filler material emerges from the liquid crystals and forms a cover with a mouthboard. 00686.ptd Page 16 200420965 VI. Patent application scope 3, according to the second patent application scope of the liquid crystal display device, wherein the tape and the seal The minimum distance between the agents is 5 ~ 30 mm. 4. The liquid crystal display device according to item 3 of the scope of patent application, wherein the minimum distance between the tape and the sealant is 8.6 5 ~ 2 0 m m. 5. The liquid crystal display device according to item 1 of the scope of patent application, comprising at least one fastener (fastener) provided at a position corresponding to the recess of the rib wall of the first frame for combining the second frame with the first frame. Frame, and the tape is set at a position corresponding to the fastener. 6. The liquid crystal display device according to item 1 of the scope of patent application, further comprising a backlight unit disposed between the liquid crystal panel and the first frame. 7. The liquid crystal display device according to item 1 of the scope of patent application, wherein the adhesive tape is fixed on the first part of the second frame. 8. The liquid crystal display device according to item 1 of the scope of patent application, wherein the minimum distance between the tape and the protruding portion of the liquid crystal panel is 5 to 30 mm. 65. The liquid crystal display device according to item 8 of the scope of patent application, wherein the minimum distance between the tape β and the protruding portion of the liquid crystal panel is 8. 65 ~ 20mm. 10. A liquid crystal display device comprising: 00686.ptd Page 17 200420965 6. Scope of patent application-a liquid crystal panel has a first surface and a second surface, the first surface of the liquid crystal panel has a display area, and the second surface of the liquid crystal panel has a protrusion on its side; A first frame has a wall (wa 1 1) substantially surrounding the liquid crystal panel, and a wall of the first frame has a rib, the rib wall has a recess; and a second frame has a first portion. Covering the edge area of the first surface of the liquid crystal panel and a second portion combined with the wall of the first frame, wherein the first portion of the second frame defines a display window for receiving the display area of the liquid crystal panel; The rib wall of the wall of the first frame is adjacent to the side of the liquid crystal panel and contacts the first part of the second frame, wherein the protruding portion of the liquid crystal panel is received in the recess of the rib wall of the first frame and the Between the first part of the second frame; the first part of the second frame has at least one protrusion protruding toward the first surface of the liquid crystal panel, wherein the first part of the second frame can be distinguished again A first region and a second region are formed, and the first region is in contact with the liquid crystal panel through the protrusion, and a gap is formed between the second region and the first surface of the liquid crystal panel, and at the same time, the second surface is formed. The protrusion is located in the second zone Domain 11. The liquid crystal display device according to Item 10 of the scope of application for a patent, wherein the liquid crystal panel has a liquid crystal material inlet ′ The inlet is formed by using a sealant to complete the sealing to form the protruding portion. 00686.ptd Page 18 200420965 6. Scope of patent application 1 2. According to the liquid crystal display device according to item 11 of the scope of patent application, the minimum distance between the protrusion of the first part of the second frame and the sealant is 5 ~ 3Omm. 1 3. The liquid crystal display device according to item 12 of the scope of patent application, wherein the minimum distance between the protrusion of the first part of the second frame and the sealant is 8 · 65 ~ 2 Omm 〇1. According to the scope of patent application The liquid crystal display device of item 10, comprising at least one fastener provided at a position corresponding to the recess of the rib wall of the first frame, for combining the second frame and the first frame, and the first The protrusions of the first part of the two frames are arranged at positions corresponding to the fasteners. 15. The liquid crystal display device according to item 10 of the patent application scope, further comprising a backlight unit disposed between the liquid crystal panel and the first frame. 16. The liquid crystal display device according to item 10 of the patent application scope, wherein the protrusion is formed by a stamping operation applied to the first part of the second frame. 17. The liquid crystal display device according to item 10 of the scope of patent application, wherein the minimum distance between the protrusion of the first portion of the second frame and the protrusion of the liquid crystal panel is 5 ~ 3Omm 〇 1 8. According to the liquid crystal display device of the 17th scope of the patent application, the minimum distance between the protrusion of the first part of the second frame and the protrusion of the liquid crystal panel is 00686.ptd Page 19 200420965 VI. Patent application range 8.65 ~ 20mm 〇1 9. According to the liquid crystal display device of the patent application item 10, wherein the first part of the second frame has a side facing the liquid crystal panel There is a height difference between the lower surface and the contact surface between the protrusion and the liquid crystal panel. 00686.ptd Page 20