TW594204B - 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

594204 amendment No. 92108192 V. Description of the invention (1) [Technical field to which the invention belongs] The present invention relates to a liquid crystal display device. [Previous technology] In order to minimize the size of the panel and reduce power consumption, the flat panel display introduced includes a liquid crystal display, a plasma display (PDP; Plasma Display panel), and an electroluminescent display f (ELD, Electroluminescent Display). ) And vacuum (VFD; Vacuum Fluorescent Display). Among these two displays, due to the good quality of the day and low power consumption, the research and development activities of liquid crystal displays are still the most active. The LCD device 1 will be used in conjunction with Figures 丨 -3 and described in Figure 1 below. The LCD flat-panel display 100 mainly includes a board 100, so although there are some two-port LCD screens, Moonlight Early Element 101 and a drive circuit board 102. The backlight unit 101 includes a luminescent lamp 104, a lamp-frame 106, a light guide plate 108, and a reflection plate 110 that reflects incident light from a horizontal direction to a vertical direction, and a protective plate 112 and the The light guide plate 108 is in contact, a first fascia plate 1 1 4 and a second fascia plate 1 1 6 are placed on the protective plate 1 1 2 and a diffuser 11 8 directs light from the first and second fascias. 1 1 4 and 1 16 diffuse to a display area 1 2 0 of the liquid crystal panel 100 at a specific 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 ioi. A frame 122 generally has a wall 123 erected near the liquid crystal panel 100 and the backlight unit 101. Referring to FIG. 2, the liquid crystal display device 10 is often provided with a back case 1 3 0

594204 _ 索 号 92108192_ 年月 修 Revised to-V. Description of the invention (2) and a front case 1 3 4 combined with, for example, a laptop computer as an output honor. The outer case 1 2 2 of the liquid crystal display 10 is embedded in the back case 1 3 0 and the front case 1 3 4 by using a fixing element 'such as a screw 1 2 2. The front case 1 3 4 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 1 24a of the second frame 1 24 covers an edge area of the surface of the liquid crystal panel 1000, and the second portion 124b of the second frame 124 has a plurality of holes 1 38, and The wall 1 2 3 of the casing 1 2 2 has a plurality of protrusions 1 3 6 for snapping into 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 138 of the second frame 124 so that the casing 122 and the second frame 124 are combined with each other. It is worth noting that the wall 122 of the housing 122 and the first portion 124a of the second frame 124 have a space therebetween. Therefore, when the liquid crystal display is subjected to an environmental test, especially a vibration test, the first portion 124a of the second frame 124 may be deformed to touch the surface of the liquid crystal panel 100, and the liquid crystal panel 1 〇〇 The surface has an adverse effect, such as causing uneven thickness of the liquid crystal layer and color unevenness (Mura) defects. SUMMARY OF THE INVENTION An object of the present invention is to provide a liquid crystal display device which at least solves the problems of the foregoing prior art. See the service side special provide a liquid crystal display device 'its with # vibration force during the test: the display is not shocked "the display is subject to shock 4 LCD panel liquid crystal material fill two ports to pass ... The liquid crystal display device according to the general aspect of the present invention mainly includes

Page 7 594204 _Case No. 92108192_Year Month Date_ί ±± _ Explanation of the invention (3)

The liquid crystal panel is disposed between a first frame and a second frame. The first surface of the liquid crystal panel has a display area, and the second surface of the liquid crystal panel has a protruding portion. The first frame has a wall (wa 1 1) substantially surrounding the liquid crystal panel, and a wall of the first frame has a rib wall (r i b) adjacent to a side of the liquid crystal panel. The second frame has an edge region with a first portion covering the surface of the liquid crystal panel, and a second portion is combined with a wall of the first frame. A first portion of the second frame defines a display window for receiving a display area of the liquid crystal panel. Since the rib wall of the wall of the first frame is against the first part of the second frame, the rib wall of the wall of the first frame can be protected when the liquid crystal display is subjected to environmental tests, especially vibration tests. The LCD panel. However, the rib wall of the wall of the first frame has a recess for accommodating the protruding portion 5 on the side of the liquid crystal panel, for example, a sealant for sealing the filling opening of the liquid crystal material. Therefore, there is no rib wall for protection near the protruding part on the side of the liquid crystal panel, that is, near the depression of the rib wall.

Therefore, according to an embodiment of the present invention, the liquid crystal display device is provided with an adhesive tape between the first portion of the second frame and the liquid crystal panel, wherein the first portion of the second frame can be further divided into a first region and A second region, and the first region is in contact with the liquid crystal panel through the tape, and a gap is formed between the second region and the first surface of the liquid crystal panel, and at the same time, the protruding portion of the second surface is located at the first Two areas. In addition, the first portion of the second frame may have at least one protrusion protruding toward the liquid crystal panel, wherein the first portion of the second frame may be further divided into a first region and a second region, and the first region The liquid crystal panel contacts through the protrusion, and the second region is in contact with the first surface of the liquid crystal panel.

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Correct the formation of a gap domain 0 and make the protrusion of the second surface be located in the second area. Therefore, when the liquid crystal is powered, the tape or the seal will not be directly transmitted to the material filling inlet. [Embodiment] The indicator suffers from a Example 2 of the external force of the first part of the frame protruding from the liquid crystal panel, agent. If the vibration during the vibration test can ensure that the external force is used to seal the liquid crystal, for example; "this matter can be expressed in different forms of embodiment, but those shown in the drawings and described below are comparable to the present invention. It is to be understood that those disclosed herein are examples of the invention and are not intended to limit the 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. 4-6. The liquid crystal display device 200 mainly includes a first frame 21 o, a liquid crystal panel 230 is disposed on the first frame 2 10, and a second frame 240 is combined with the first frame 21 (1). The panel 23 is accommodated therebetween. The first frame 2 4 0 and the first frame 2 1 0 are generally combined with 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 crystal panel 2 30 has a first surface 232 and a second surface 234 which are substantially perpendicular to each other. The first surface 232 of the 5X liquid crystal panel 230 has a display area. The liquid crystal panel 230 can be provided with a reflective surface (such as an aluminum or silver reflector), which reflects light to illuminate the liquid crystal panel 230 and retains the polarization of the light incident on the reflective surface. Orientation (polarization orientation). Although reflective displays meet low

594204

Power consumption requirements, 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 light unit 220) is often used to illuminate the liquid crystal panel 23. Referring to FIG. 4, the backlight unit 22 0 generally includes a lamp tube 222, a reflective film 224, an iight guide plate 226, and an optical film 228 for radiating light from the lamp tube 222. The liquid crystal display panel 2 30 is uniformly emitted. The lamp tube 222 is generally provided in a lamp fixture (not shown in the figure). The first frame 210 has a wall 212 substantially surrounding the liquid crystal panel 230, and the wall 212 of the first frame has a rib 2i2af adjacent to the second surface 234 of the liquid crystal panel (see FIG. 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 230 and a second portion 240b. Combined with the wall 212 of the first frame 210. The first portion 2440a of the first frame 240 defines a display window to accommodate the display area of the liquid crystal panel. Since the first frame 2 1 The wall 212a of the wall 212 is against the first part 24oa of the second frame 240 (see FIG. 5). Therefore, when the liquid crystal display is subjected to environmental testing, especially vibration test The rib frame 2 1 2a of the first frame 2 1 0 and the rib 2 2 2 of the first frame 2 can protect the liquid crystal panel 230 in the process of the liquid crystal panel of the present invention. The two glass substrates are bonded with a sealing material, and Inject liquid crystal (LC) material between the two substrates] and the workshop. Then connect Light sheet (polarizing films) affixed to each of the outer substrates, and the installation of the drive electronics printed circuit board (PCBs).

Page 10 594204 ____ cable number 92108192__ year month _ said chromium ^ __ V. Description of the invention (6) In detail, the assembly of the glass substrate can be divided into the following steps: First, by screen (si 1 kscreening) Or screen printing (scree η P rinting) to complete the coating of an adhesive sealing material. 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 wiping off excess liquid crystal 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 23 has two liquid crystal material injection ports, so the sealant forms two protruding portions 230a on the second surface 234 of the liquid crystal panel. Because of this liquid crystal panel M. The protruding portion 230a is received in the recessed portion 212b of the rib wall 2 12a. Therefore, the area near the protruding portion 230a on the first surface 232 of the liquid crystal panel 230 is near the recessed portion 2 1 2 b of the rib wall. There is no ribbed wall to protect against errors. However, since the portion of the liquid crystal panel 230 near the liquid crystal material injection port is more fragile than other parts, it is often observed when the liquid crystal display is subjected to the "environmental test", especially the vibration test. The color unevenness caused by the uneven thickness of the liquid crystal layer is caused by the deformation of the first frame 240 first portion 240 a touching the area near the protruding portion 2 3 0 a on the first surface 23f of the liquid crystal panel 230 ( Mur a) (generally defined as a bright area (pixels on a substrate) that is different or abnormal from the surroundings, which is also known as brightness unevenness, w '(Brightness Non-Uniformity; BNU)) 〇 Therefore according to the present invention The liquid crystal display device 2000 is provided with two adhesive tapes 250 located between the first portion 240a of the second frame 24o and the liquid crystal panel / 3o.

Page 11 594204 __Case No. 92108192_Year_Month_Rev. 5. Description of the invention (7) and the adhesive tape 2 50 is provided corresponding to the depression 212b of the rib wall 212a so that the second frame 24 There is a gap between the first portion 240 a of 0 and the area on the first surface of the wave crystal panel 23 0 in the vicinity of the protruding portion 2 3 0 a, thereby ensuring that the first portion 240 a of the second frame 240 does not It will contact the area on the first surface of the liquid crystal panel 230 near the protrusion 23a. The tape 250 is preferably fixed to the first portion 240a of the second frame 240. The first portion 240a of the second frame 240 can be further divided into a first area (the area covered by the tape 250) and a second area, and the first area is in contact with the liquid crystal panel through the tape, and the first area A gap is formed between the two regions and the first surface 232 of the liquid crystal panel 230, and at the same time, the protruding portion 23 0a of the second surface 234 is located in the second region. Although in this embodiment, the liquid crystal display device 200 is provided with two adhesive tapes 250, if necessary, the liquid crystal panel of the present invention may include only one adhesive tape 250 corresponding to one of the rib recesses 212a and the rain recesses 212b. Settings. A liquid crystal display device 300 according to another embodiment of the present invention will be described below with reference to FIGS. 7-9. The liquid crystal display device 3 0 0 is the same as the liquid crystal display device 2 shown in FIGS. 4 to 6 except that the first portion 24 0a of the second frame 24 0 has protrusions 31 0 to replace the adhesive tape 250. 〇 Approximately the same. There is a height difference between the lower surface of the first portion 240a of the second frame facing the liquid crystal panel 23 0 and the contact surface of the protrusion 31 0 and the liquid crystal panel. In detail, the protrusion 3 1 0 can be formed by a stamping operation applied to the first portion 2 40 a of the second frame. It is worth noting that the protrusion 310 protrudes toward the first surface 2 32 of the liquid crystal panel 23 and is provided corresponding to the depression 212b of the rib wall 212a, whereby the first portion 24 of the second frame 240 〇a In addition to the process

Page 12 594204 V. Description of the invention (8) --- There is a gap between the outside of 310 and the area on the first surface 232 of the liquid crystal panel 230 near the protrusion 230a. The first part 2 40a of the second frame 24o can be further divided into a first area (the area where the protrusion 31o is located) and a second area, and the first area is transmitted through the protrusion 3o0 and the liquid crystal. The panel is in contact with each other, and a gap is formed between the second region and the first surface 2 3 2 of the liquid crystal panel 2 30, and at the same time, the protruding portion 2 3 0 a of the second surface 2 3 4 is located in the second region. Although the liquid crystal display device 300 is provided with two protrusions 3 1 0 in this embodiment, if necessary, the liquid crystal panel of the present invention may include only one protrusion 310 corresponding to two recessed portions 21 2 b of the rib wall 2 12 a. One set. It is worth noting that the protrusions 3 1 0 or the tape 2 50 of the first portion 240 a of the second frame 240 cannot be too close to the protrusions 2 3 0a of the liquid crystal panel (for example, a sealant used to seal the entrance of the liquid crystal material). ), Which adversely affects the protruding portion 230a of the liquid crystal panel, for example, an external force (such as a vibration force during a vibration test) is transmitted to the protruding portion 230a of the liquid crystal panel. However, the protrusion 3 1 0 or the adhesive tape 2 50 cannot be too far away from the protrusion 2 300 a of the liquid crystal panel, otherwise it may not be effectively ensured that an external force is not directly transmitted to the protrusion of the liquid crystal panel. Therefore, the minimum distance between the protrusion 310 or the adhesive tape 250 and the protrusion 2 3 0a of the liquid crystal panel is 5 to 3 0 m m ′, preferably 8 · 65 to 2 0 m m. In addition, the minimum distance between the protrusion 310 or the tape 250 and the edge of the first frame 240a of the second frame 240 is 0.3 ~ (K5mm, and the length of the protrusion 310 or the tape 250 may be 5 ~ 15 mm). A frame 2 10 and a second frame 2 40 are generally provided with a plurality of screw holes for the screws 2 60 to pass through. The screw holes are provided corresponding to the first frame.

Page 13 594204 ___ cable number 92108192_ year and month ___ V. Description of the invention (9) When the position of the recess 212b of the 210 rib wall 212a is not protected by the rib wall 212a, when the screw is locked 2 6 0 It is often easy to deform the screw holes of the first frame 2 1 0 near the recess 2 1 2 b. Therefore, the tape 250 and the protrusion 310 of the second frame 240 according to the present invention are preferably provided corresponding to the screws 2 60 near the recess 2 1 2 b. Although the number of injection ports has a depression, the vibration measurement can be used to determine the thickness of the liquid crystal and the liquid crystal. Anyway, in the embodiments that can be appended, if necessary, when the material injection port material is injected into the sealing force formed by the sealing agent according to the present invention, the force will not be filled by the orthorhombic material. Various patent applications are used in this application. For example, 'the outstanding LCD screen tape or the conductive performer, the interface board of the moving and repairing center has two liquid crystal surfaces of the invention.' Frame ribs. The display suffers from the second frame first to the liquid crystal panel sealant. The example reveals that, however, it does not deviate from this development, so the issuer shall prevail. A force order, u part of the protrusion, forgiveness, example is not used to protect the consciousness of the gods 594204 _ case number 92108192_ year month and month revised _ simple illustration [Schematic illustration] Figure 1: Department of custom 3D perspective view of the structure of the liquid crystal display device; Figure 2 is a perspective view of the front case, back case, and combination structure of the liquid crystal display device shown in Figure 1; Figure 3 is a view along Figure 3-3 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. Figure shows a ribbed wall against a second frame;

FIG. 6 is a cross-sectional view of the liquid crystal display device shown in FIG. 4, which illustrates that an adhesive container is placed in a recess of a rib wall; FIG. 7 is a liquid crystal according to another embodiment of the present invention A perspective view of the structure of the display device; FIG. 8 is a partial enlarged view of the liquid crystal display device shown in FIG. 7; and FIG. 9 is a sectional view of the liquid crystal display device shown in FIG.

Drawing number description: 10 LCD flat display 100 LCD panel 101 Backlight unit 102 Circuit board 104 Cold light 106 Lamp housing 108 Light guide plate 110 Reflective plate 112 Protective plate 114 First prism plate 116 Second

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Case No. 92108192 on page 16 Simple explanation of revised drawings 118 Diffuser 120 Visible area 122 Housing 123 Wall 124 Second frame 200 Liquid crystal display device 210 First frame 212 Wall 212a Rib wall 212b Depression 220 Backlight unit 222 Lamp Tube 224 Reflective film 226 Light guide plate 228 Optical film 230 Liquid crystal panel 232 First surface 234 Second surface 23 0a Protrusion 240 Second frame 24 0a Part 240b Part 250 Tape 260 Screw 300 LCD display device 310 Protrusion

Claims (1)

594204 _Case No. 92108192_ Amendment Month_ Six. 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, the The second surface of the liquid crystal panel has a protruding portion; a first frame has a wall (wa 1 1) substantially surrounding the liquid crystal panel, a wall of the first frame has a rib, and the rib wall has a recess; A second frame has a first portion covering an edge region of the first surface of the liquid crystal panel and a second portion combined with a wall of the first frame, wherein the first portion of the second frame defines a display window for The display area of the liquid crystal panel is received; the rib wall of the wall of the first frame is adjacent to the side of the liquid crystal panel and contacts the first portion of the second frame, wherein the protruding portion of the liquid crystal panel is accommodated in the first A recessed portion of a frame rib wall and the first portion of the second frame; and an adhesive tape disposed on the first portion of the second frame and contacting the liquid crystal panel, wherein the second frame The first part can be further divided into a first area and a second area, and the first area is in contact with the liquid crystal panel through the tape, and the second area forms a gap between the first area and the first surface of the liquid crystal panel. The gap makes the protruding portion of the second surface be located in the second region. 2. The liquid crystal display device according to item 1 of the scope of the patent application, wherein the liquid crystal panel has a liquid crystal material filling inlet, and the filling inlet is sealed with a sealant to form the protruding portion. Page 17 594204 Case No. 92108192_Year Month Date Amendment 6. Scope of patent application 3. Liquid crystal display device according to item 2 of the scope of patent application, wherein the minimum distance between the tape and the sealant is 5 ~ 30 mm. Fan Li specially asked Shen Yi to show the om crystal-2 liquid 65 of the installation device with glue. The second and eighth items are the best agent to seal the gap between the m and the recessed wall. Rib 5 A mounting frame is shown in the item 1) The first er en en Fan St fa fa h h solid in t according to 4 tapes and the frame one frame. The second piece of the frame is consolidated and tightly used for this purpose. The liquid crystal display device according to item 1 of the scope of the patent application which is located in the corresponding position is 6, and further includes a backlight unit provided on the liquid crystal. Between the 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. 9. The liquid crystal display device according to item 8 of the scope of patent application, wherein the minimum distance between the tape and the protruding portion of the liquid crystal panel is 8.5 to 2 Omm. 10. A liquid crystal display device comprising: Page 18 594204 _Case No. 92108192_ Amendment Month_ Six. Patent application scope 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 protruding portion located at A side frame thereof; a first frame having a wall (wa 1 1) substantially surrounding the liquid crystal panel, a wall of the first frame having a rib wall having a recess; and a second frame having A first portion covers an edge region of a first surface of the liquid crystal panel and a second portion is combined with a wall of the first frame, wherein the first portion of the second frame defines a display window for receiving the liquid crystal panel. Display area; the rib wall of the wall of the first frame is adjacent to the side of the liquid crystal panel and contacts the first portion of the second frame, wherein the protruding portion of the liquid crystal panel is received in the rib wall of the first frame Between the depression and the first portion of the second frame; the first portion of the second frame has at least one protrusion protruding toward the first surface of the liquid crystal panel, wherein the first portion of the second frame It is further divided into a first region and a second region, 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 first region The protrusions on the two surfaces are located in the second region. 11. The liquid crystal display device according to item 10 of the scope of the patent application, wherein the liquid crystal panel has a liquid crystal material filling inlet, and the filling inlet is formed by using a sealant to complete the sealing to form the protruding portion. Page 19 594204 _Case No. 92108192_Year_Month__ Sixth, the scope of patent application 1 2. The liquid crystal monitor device according to the 11th scope of the patent application, wherein the protrusion of the first part of the second frame and The minimum pitch of 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. 6 5 to 20 mm. Therefore, 1 according to the patent application The liquid crystal display device of the range item 10 includes 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 with the first frame, And the protrusion of the first part of the second frame is provided at a position corresponding to the fastener. 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 scope of patent application, wherein the protrusion is formed by a stamping operation applied to the first part of the second frame. -1 7. 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 part of the second frame and the protrusion of the liquid crystal panel is 5 ~ 30mm 〇1. According to the scope of patent application The liquid crystal display device of item 17, wherein the minimum distance between the protrusion of the first part of the second frame and the protrusion of the liquid crystal panel is Page 20 594204 _Case No. 92108192_Amendment of the Year and Month_ Sixth, the scope of the patent application is 8 · 65 ~ 2 Omm 〇1. The liquid crystal display device according to the tenth scope of the patent application, where the second frame is the first A portion has a lower surface facing the liquid crystal panel, and there is a height difference between the lower surface and a contact surface between the protrusion and the liquid crystal panel. Page 21