TWI293137B - - Google Patents

Description

1293137 A7 _______B7_ V. DESCRIPTION OF THE INVENTION (1) The present invention relates to a liquid crystal display device, and more particularly to a liquid crystal display module and a liquid crystal display device, which can improve the structure of the light guide plate (please read the attention of the back side first) The problem is to fill in the page and the mold of the liquid crystal display device to minimize the movement of the light guide plate housed in the mold frame. Recently, an information processing device has been developed to have various shapes, various functions, and fast information processing speed. The information processed in the information processing device has an electrical signal. In order to visually confirm the information processed in the information processing device, a display device capable of functioning as an interface device is required. Recently, there has been a liquid crystal display device (LCD) which is lighter and smaller than a CRT type display device which has been developed. The LCD is now capable of displaying full color spectra at high resolution. Therefore, the LCD is widely used as a computer screen television receiver, and other display devices. The LCD applies a voltage to a liquid crystal layer to change the molecular arrangement of the liquid crystal layer. The LCD changes the optical properties of the liquid crystal and uses a liquid crystal cavity to modulate the light. These LCDs are divided into two types: a tn (twisted nematic) type and a STN (super twisted nematic) type. Further, they can be classified into an active matrix display type using a switching device and a TN liquid crystal according to a driving method, and a passive matrix display type using an STN liquid crystal. The active matrix display method is used in a (thin film transistor) TFT-LCD and uses a TFT as a switch to drive an LCD. The passive matrix display method does not use any transistors and does not require complicated circuitry. This paper scale applies to China National Standard (CNS) A4 specification (210X297 mm) 1293137 A7 _B7_ V. Invention description (2) (Please read the note on the back and fill in this page) Also, depending on the method of using the light source, The LCD can be distinguished as a transmissive LCD using a backlight, and another reflective LCD using an external light source. The transmissive LCD using a backlight as a light source is relatively heavy and large due to the backlight device, but is still widely used because it does not require an external light source, and can display images independently without an external light source. Figure 1 is a perspective exploded view of a conventional LCD. Fig. 2 is a partially exploded perspective view of the LCD of Fig. 1. Referring to FIG. 1, the LCD 900 has a liquid crystal display module 700 to which an image signal is applied to display an image, and a front case 810 and a rear case 820 to receive the liquid crystal module 700. The liquid crystal display module 700 has a display unit 710 that includes a liquid crystal display panel that can display the display. The display unit 710 has a liquid crystal display panel 712, an integrated printed circuit board 714, a data side strip carrier package 716, and a gate side flexible circuit board made by a film on film (COF) method. 718. The LCD panel 712 has a TFT substrate 712a, a color filter substrate 712b, and a liquid crystal layer (not shown) disposed therebetween. The TFT substrate 712a is a transparent glass substrate on which a thin film transistor having a matrix shape is provided. A data line or the like is connected to the source terminals of the TFTs, and a gate line or the like is connected to the gate terminals of the TFTs. A pixel electrode made of a conductive transparent material, indium tin oxide (ITO), is provided on the ruthenium terminal. If an electrical signal is input to the data line and the gate line, the electric signal will be input to the source terminal and the gate terminal of the TFTs, and the TFTs will apply the Chinese National Standard (CNS) A4 to the paper scale. Specifications (210X297 mm) -6 - 1293137 A7 --------B7 __ V. Description of the invention (3) Turns on or off, so that the electrical signal for forming the pixel can be output to the 汲 terminal. The color filter substrate 712b is fixed to the TFT substrate 712a. An RGB pixel or the like which can form a color display by passing light is provided on the color filter substrate 712b by a thin film process. A common electrode made of ITO is coated on the front surface of the color filter substrate 712b. If a power source is applied to the gate terminal and the source terminal of the TFTs and the TFTs are turned on, an electric field is formed between the pixel electrode on the TFT substrate and the common electrode on the color filter substrate. The arrangement angle of the liquid crystal injected between the TFT substrate 712a and the color filter (CF) substrate 712b will be changed by the electric field, and the path of the light will also change due to the change of the arrangement angle, thereby obtaining a desired The cell state. A driving signal and a timing signal are applied to the TFTs gate line and the data line to control the arrangement of the liquid crystals of the LCD panel 712 and the timing of the liquid crystal alignment. The data side strip-shaped package 716 is a flexible circuit board capable of determining when the data driving signal should be applied, and is fixed to the source side of the panel 712; The pull-up board 718 is made by the COF method and is fixed to the gate side of the panel 712 when it is determined when the gate drive signal should be applied. The integrated printed circuit board 714 can receive image signals from the outside of the LCD panel 712, and apply driving signals to the gate lines and data lines to be connected to the data strip-shaped carrier package 716 on the data line side of the LCD panel 712. The integrated printed circuit board 714 has a source portion on which an image signal generated by an external information processing device (not shown) such as a computer is applied. 7 (Please read the back note first and then fill in the page. This paper scale applies to China National Standard (CNS) A4 specification (210X297 public) 1293137 A7 _____Β7_ V. Invention Description (4) Provides data drive signal to LCD panel 712; and a gate drive signal can be provided by a gate The gate line of the panel 712. That is, the integrated printed circuit board 714 generates drive signals for driving the LCD, data signals, and timing signals for applying the signals. The gate signal is applied to the gate line of the panel 712 via the gate side flexible circuit board 718, and the data signal is applied to the data line of the panel 712 via the data side strip carrier package 716. A backlight assembly 720 that provides uniform illumination to the display unit 710 is disposed under the display unit 71. The backlight assembly 72 has a lamp 721 disposed on one side of the liquid crystal display module 7 to generate bright light. The lamp 72 is covered by a lamp cover 722. A light guide plate 724 is sized to correspond to the panel 712 of the display unit 710 and is disposed under the panel 712. The light guide plate 724 is thicker on the side of the lamp than on the opposite side thereof, and can guide the light generated by the lamp 721 to the display unit 710 to change the path of the light. A plurality of astigmatism sheets 726 can have the same brightness of the light that is emitted from the light guide plate 724 and advance toward the face plate 712, and is superposed on the light guide plate 724. A reflecting plate 728 can reflect the light leaked by the light guiding plate 724 to increase the efficiency, and is disposed under the light guiding plate 724. The display unit 710 and the backlight assembly 720 are fixed and supported by a frame 730 of a receiving container. The mold frame 73 has a box shape and its top surface is open. That is, the mold frame 730 has four side walls and a bottom surface, and a plurality of openings and the like are disposed below the bottom surface for winding and positioning the integrated printed circuit board 714 along the outer side of the mold frame 730. There is also a frame 740 for bending the integrated printing paper of the display unit 710. The Chinese National Standard (CNS) A4 specification (210X297) is applicable (please read the back note and fill in the page), ^τ—1293137 A7 - ______ B7 ________ V. Description of the Invention (5) Brush circuit board 714, and a gate side carrier package 718' outside the mold frame 730 and an integrated printed circuit board 714 of the display unit 71 and the gate The pole side strip carrier package 718 is secured to the bottom surface of the mold frame 730 to prevent the display unit 710 from shifting. The frame 740 is also box shaped and similar to the mold frame 730. The top surface of the frame 740 is open to expose the display panel 71A, and its side walls are bent inwardly to cover the peripheral portion of the top surface of the panel. On the other hand, referring to Fig. 2, the first and second snap studs 731 and 732 are integrally provided at the corners of the mold frame 730, that is, the mold frame 730 is installed next to the accommodation space of the lamp 721. . The light guide plate 724 housed in the mold frame 73 is located at the end corner of the side of the lamp 721, and is cut away to form the first and second buckles 724a and 724b. Fig. 3 is a view showing the state in which the light guide plate in Fig. 2 is housed in the mold frame. Fig. 4 is a partially enlarged view showing the fixing structure of the light guide plate and the mold frame in Fig. 3. Fig. 5 is a top plan view showing the size of the light guide plate in Fig. 3. Referring to FIG. 3, if the light guide plate 724 is received in the mold frame 730, the first and second buckles 724a and 724b are engaged with the first and second snap post protrusions 731 and 732. Therefore, even if an external impact is applied to the [CD 900, the light guide plate 724 does not move toward the lamp 721 because the first and second snap post 731 and 732 are supported. However, recently, the thickness of the side wall of the mold frame 730 has been gradually thinned, so that the size of the LCD 900 can be minimized. Further, as shown in Fig. 5, the width of the end portion of the light guide plate 724 on the side of the lamp 721 is the same as the width of the opposite end portion. Therefore, it is difficult to sufficiently ensure the thicknesses of the first and second snap studs 731 and 732 which are formed integrally with the mold frame 73. Therefore, as shown in Figure 4, 9 (please read the note on the back and then fill out this page) This paper scale applies to the Chinese National Standard (CNS) A4 specification (210X297 mm) 1293137 A7 B7 V. Invention description (6) Because the first and second buckles 724a and 724b of the light guide plate 724 and the first and second snap posts 731 and 732 of the mold frame 730 are not sufficiently secured, it is difficult to prevent The light guide plate 724 moves toward the lamp 721. On the other hand, if the width of the light guide plate 24 is increased by the gap size between the light guide plate 724 and the mold frame 730 to ensure the holding force, the snap studs 731, 732 and the buckle will be obtained. The holding force between 颚724a, 724b. However, if there is no gap between the light guide plate 724 and the mold frame 730, the thermal expansion space of the light guide plate 724 for temperature and humidity changes cannot be ensured, and the bending phenomenon is greatly caused. In particular, in the wedge-shaped light guide plate 724 shown in FIG. 1, since the thermal expansion rate is large in the thin portion of the light guide plate 724, there must be sufficient between the light guide plate 724 and the mold frame 730. gap. On the other hand, although not shown in the figure, the movement of the light guide plate 724 can be formed by projecting a small portion on both sides thereof to form a columnar protrusion, and is formed at corresponding positions on the two side walls of the frame frame 730. A pocket is engaged with each other to prevent it. However, in this case, it is not easy to secure the holding force between the stud and the recess, and the light input by the lamp 721 concentrates on the corner portion formed by the stud and the recess. The present invention has been developed to solve the above problems, and it is therefore an object of the present invention to provide a liquid crystal display module which can prevent a light guiding device housed in a mold frame from moving as much as possible. Another object of the present invention is to provide an LCD which can prevent damage to a light guiding device housed in a module. For the purpose of the present invention, a liquid crystal display module according to the present invention includes a light guide plate for guiding light emitted by a light unit to a display 10 (please read the back of the back sheet and fill in the page). This paper scale is applicable to China National Standard (CNS) A4 specification (210X297 mm) 1293137 A7 ------- B7 1 丨· - __ V. Invention description (7) Unit to display images. The light guide plate has a buckle, which is formed by cutting at least one corner of a first end portion of the light received by the lamp unit, and a protrusion protrudes outward from the side wall of the buckle, and has a ratio The buckle has a thinner thickness. A frame will accommodate the light guide plate and the lamp unit. The frame has a card 4 column dog and a concave eight. The shackle is formed on the bottom surface of the mold frame corresponding to the first position of the buckle, and can be engaged with the buckle sleeve to fix the light guide plate in the stencil frame. The recess is disposed on the side wall of the mold frame corresponding to a second position of the convex body to receive the convex body. In order to achieve another object of the present invention, a 2LCD according to the present invention includes a backlight assembly having a light guide plate for directing light emitted by a lamp unit to a display unit for displaying an image. The light guide plate has a buckle and a convex body. The buckle system will be formed by the lamp unit receiving at least one of the first ends of the light. The convex system projects outwardly from the side walls of the buckles. And has a thinner thickness than the buckle. The module can accommodate the light guide plate and the lamp soap 7L. The mold frame has a buckle post and a recess, and the snap post is disposed at a first position of the bottom surface of the mold frame corresponding to the buckle, and the buckle can be engaged to fix the light guide plate In the mold box. The recess is disposed on the side wall of the mold frame at a second position corresponding to the convex body to receive the convex body. A top frame is coupled to the mold frame, and can be used to guide the display unit when the display unit and the backlight assembly are fixed to the mold frame. In order to achieve another object of the present invention, a 2LCD according to the present invention includes a light guide plate and a mold frame for guiding light emitted by a light unit to a display unit to display an image; the mold frame is used for displaying an image; The light guide plate and the lamp unit are accommodated, and the mold frame has a buckle cover formed on the side wall of the mold frame. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 public Chu) 11

Yes, I can read the back note and fill in the page. 5. Inventive Note (8) Corner section 'This prevents the light guide from coming off the frame in the vertical direction.

The protrusion has a width which gradually decreases from one end to the other end of the light guide plate. The light guide plate is a wedge type light guide plate whose thickness is gradually thinned from one end toward the other end. The recesses provided on the side walls of the mold frame have a width which is greater than the thickness of each of the projections but less than the thickness of each of the buckles. The thickness of the buckle and the snap stud engagement region is the same as the convex body. X In the liquid crystal display module and the LCD, even if an external impact is applied to the LCD, since the snap studs of the mold frame are firmly fitted to the buckles, the light guide plate can be prevented from moving toward The light. In addition, even if an external impact is applied to the side wall of the mold frame, the convex bodies and the buckles can be prevented from being damaged because the convex systems are respectively received in the concaves of the mold. Since X ' is formed into a tapered shape, the light output from the lamp can be prevented from being concentrated. BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects and advantages of the present invention will be readily understood by reference to the following detailed description and the accompanying drawings. Fig. 2 is an exploded perspective view showing the structure of the light guide plate and the mold frame in Fig. 1; Fig. 3 is a view showing a state in which the light guide plate in Fig. 2 is accommodated in the mold frame; Fig. 4 is a view Partially enlarged view shows the horizontal fixing structure of the light guide plate and the mold frame in Fig. 3; Fig. 5 is a top view showing the size of the light guide plate in Fig. 3; 1293137 A7 _____Β7_ V. Description of invention (9) Figure 6 is an exploded perspective view of the LCD of the first preferred embodiment of the present invention; Figure 7 is an exploded perspective view showing the construction of the light guide plate and the mold frame of the LCD of Figure 6; The figure shows a partially cutaway perspective view showing the construction of the light guide plate in Fig. 7. FIG. 10 is a view showing a state in which the light guide plate in FIG. 7 is accommodated in the mold frame; and FIG. 11 is a partially enlarged view showing the horizontal fixing structure of the mold frame and the light guide plate in FIG. 10; FIG. 10 is a top view of the structure of the light guide plate in FIG. 10; and FIGS. 13 and 14 show a state in which the convex body of the light guide plate in FIG. 11 is coupled to the cavity of the mold frame; FIGS. 15 and 16 show 11 is a perspective view of the LCD of the second preferred embodiment of the present invention; FIG. 18 is a perspective view of the LCD of the second preferred embodiment of the present invention; The light guide plate in the figure is accommodated in a mold frame; the 19th view is a top view of the structure of the light guide plate in Fig. 11; and the 20th is a structural sectional view of the light guide plate in Fig. 19, and Figure 21 is a top view showing in detail the bonding state of the light guide plate and the mold frame in Fig. 18. Hereinafter, a liquid crystal display module and an LCD according to a preferred embodiment of the present invention will be described in detail with reference to FIGS. 6 to 18. 13 (Please read the note on the back and fill in the page) This paper scale applies to the Chinese national standard (〇jS) A4 specification (210X297 mm) 1293137 A7

5. Description of the Invention (10) - The first embodiment to the sixth drawing are schematic exploded views showing an LCD of a first embodiment of the present invention. Referring to FIG. 6, the LCD panel 1 has a liquid crystal display module 200, and image signals are applied to the module 200 to display images, and a casing 3 includes a front casing 31 and a rear casing. 32〇 can accommodate the module 2〇(). The module 200 has a display unit 2 including a liquid crystal display panel for displaying images. A frame 330 bends the integrated printed circuit board 214 of the display unit 21''. The display unit 210 has a liquid crystal display panel 212, an integrated printed circuit board 214, a data side strip-shaped carrier package 216, and a gate side flexible circuit board 218 made by the COF method. The panel 212 has a TFT (Thin Film Transistor) substrate 212a, a CF (filter) substrate 212b, and a liquid crystal (not shown) disposed therebetween. The TFT substrate 212a is a transparent glass substrate on which TFTs in the form of a matrix are provided. The data lines are connected to the source terminals of the TFTs, and the gate lines are connected to the gate terminals of the TFTs. A pixel electrode made of a transparent conductive material ITO is provided on the 汲 terminal. If an electrical signal is input to the data line and the gate line, the electrical signal is input to the source terminal and the gate terminal of the TFTs, and when the electrical signals for forming the pixel are outputted to the gate At the extremes, the TFTs will turn on or off. The CF substrate 212b is fixed to the TFTs substrate 212a. RGB pixels which can be light-passed to form a color display are provided on the CF substrate 212b. One by 14 (please read the note on the back and then fill out this page) ·, ^τ— - Fees - This paper scale applies to China National Standard (CNS) Α4 specification (210X297 mm) 1293137 A7 B7 V. Invention Description (11 A common electrode made of ITO is coated on the front surface of the CF substrate 212b. (Please read the note on the back and fill in this page.) If a power supply is applied to the gate and source terminals of the TFTs, and the TFTs are turned on, an electric field will be generated on the TFTs substrate 212a. Between the common electrode on the CF substrate 212b. The arrangement angle of the liquid crystal between the TFT substrate 212a and the CF substrate 212b will be changed by the electric field, and the path of the light will also change due to the change of the arrangement angle, and a desired pixel state can be obtained. . A driving signal and a timing signal are applied to the gate lines and the data lines of the TFT to control the arrangement of the liquid crystals of the panel 212 and the timing at which the liquid crystals are arranged. The data side strip carrier package 216 is a flexible circuit board for determining the timing of applying the data driving signal, and is fixed to the source side of the panel 212; and the gate side flexible circuit board The 218 is made by the c〇f method, and the timing at which the gate driving signal is applied is determined to be fixed to the gate side of the panel 212. The integrated printed circuit board 214 can receive image signals from outside the panel 212 and can apply drive signals to the gate lines and data lines to be coupled to the strip carrier package 216 on the data line side of the panel 212. The integrated printed circuit board 214 has a source portion to which an image signal generated by an external information processing device (not shown) such as a computer is applied, and a data driving signal is supplied to the panel 212; and a gate portion A gate drive signal can be provided to the gate line of the panel 212. That is, the integrated printed circuit board 214 generates a gate drive signal for driving the LCD, a data signal, and a plurality of timing signals for applying the signals. 1293137 A7 ____B7_ V. Description of the invention (No. 4 of the gates) The driving signal is applied to the gate line of the panel 212 via the gate side flexible circuit board 218, and the data signals are applied to the data lines of the panel 212 via the data side strip carrier package 216. The display unit 210 can provide uniform brightness to be disposed under the display unit 210. The backlight assembly 220 has a lamp 221 which is disposed on one side of the module 2 to generate The light 221 is covered by a lamp cover 222. A light guide plate 224 is sized to correspond to the panel 212 of the display unit 210, and can guide the light generated by the lamp 221 to the display unit 210 to change the path of the light. A plurality of astigmatism sheets 226 are disposed above the light guide plate 224 so that the brightness of the light emitted by the light guide plate 224 toward the panel 212 is uniform. A reflector 228 can reflect the light leaked by the light guide plate 224. To increase light The rate is set under the light guide plate 224. The display unit 21 and the backlight assembly 220 are both fixed and supported by a mold frame 400. Fig. 7 is an exploded perspective view showing the invention of Fig. 6. The light guide plate and the mold frame of the LCD of the first preferred embodiment. Fig. 8 is a side view showing the structure of the side wall of the light guide plate in Fig. 7. Fig. 9 is a partially cutaway perspective view The light guide plate of Fig. 8 is a plan view showing the light guide plate of the first preferred embodiment of Fig. 7. Referring to Fig. 7, the light guide plate 224 is a model light guide plate. The thickness of the first end portion of the light input plate is gradually reduced from the lamp 221. However, the first preferred embodiment of the present invention can also be applied to the thickness of the first end portion of the light guide plate 224. The same condition as the second end of the first end. 16 (Please read the note on the back and fill the page first) This paper size applies to the national standard of the country (〇fS) A4 specification (2i〇 X297 mm) 1293137 A7 _B7_ V. Description of the Invention (0) The first end of the light guide plate 224, that is, the first end portion faces the lamp 221 The two end portions of the housing that are received in the receiving space of the mold frame 400 are cut away to form a third buckle 224a and a fourth buckle 224b. A first protrusion 224a' and a second portion The convex body 224b' will protrude outward from the side walls of the third and fourth buckles 224a and 224b, and have a thinner thickness than the buckles 224a and 224b, respectively. Please refer to Figures 8 and 9, which The thickness tl of the second protrusion 224b' is smaller than the thickness t2 of the fourth button 224b. Meanwhile, the thickness of the first protrusion 224a' is the same as that of the second protrusion 224b', and the third buckle 224a The thickness is the same as that of the fourth buckle 224b. If the first and second protrusions 224a' and 224b' increase the weight of the light guide plate 224, the thicknesses t1 of the protrusions 224a' and 224b' may be thinner than the thicknesses t2 of the buckles 224a and 224b. This will be explained later. On the other hand, referring to Fig. 7, the lamp 221 and the lamp cover 222 are housed on one side of the housing space of the mold frame 400 on which the light guide plate 224 is mounted. The third and fourth snap studs 402 and 404 can fit the third and fourth buckles 224a and 224b to prevent horizontal movement of the light guide plate 224, and are formed integrally with the mold frame 400. At both corners of the side wall on which the lamp 221 is mounted. The third and fourth buckle covers 406 and 408 prevent the light guide plate 224 accommodated in the mold frame 400 from being vertically displaced in the accommodation space, and are integrally formed with the mold frame 400, and are opposite to the first The two corners of the side walls of the third and fourth snap studs 402 and 404. As shown in FIG. 10, when the light guide plate 224 is received in the receiving space of the die 4, the third buckle 224a is engaged with the third snap protrusion 402, and the fourth buckle The 224b will fit the fourth snap stud 404. The light guide plate 224 is 17 (please read the note on the back side and fill in this page). The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm). 1293137 A7 — ___B7_ V. Invention description (1 now and 2 ends) A portion of the two corner portions is inserted into the bottom sides of the third and fourth buckle covers 406 and 408. Fig. 11 is a partially enlarged view showing the guide of the first embodiment in Fig. 10. For the fixing structure of the light plate 224 and the mold frame 400, refer to FIG. 11. The gap between the side surface of the third buckle 224a and the side wall of the mold frame 4 is the side of the second end portion of the light guide plate 224. The gap between the mold frames 400 is narrower. This is because the first convex body 224a is formed integrally with the light guide plate 224 and is disposed on the side wall of the third buckle 224a. The first convex body 224a' has The width of the third buckle 224a of the light guide plate 224 is narrowed from the first end toward the second end. The width of the buckle 224b will also be narrower than that of the buckle 224a. Therefore, the buckles 224a and 224b and the buckle posts The amount of the buckle between 402 and 404 will increase due to the width of the buckle. More specifically, as shown in Fig. 12, the third and fourth buckles 224a and 224b of the light guide plate 224 The widths W3 and W4 are the same after the first and second protrusions 224a, 224b are not attached to the third and fourth buttons 224 and 226. In this case, the light guide plate 224 The width of the one end portion and the second end portion are the same. However, if the first and second protrusions 224a and 224b are respectively attached to the side walls of the buckles 224 & The width w1' of the first end portion of the light guide plate 224 will increase the range of the widths W5 and W6 of the first and second protrusions 224a' and 224b' with respect to the width W2 of the second end portion thereof. Therefore, as in the eleventh As shown in the figure, in the third and fourth buckles 224 & and 2241) 18 (please read the note on the back and then fill out this page) This paper size applies to the Zhongguan Miscellaneous (TMs) A4 specification (210x297 public) 1293137 A7 --------B7_

5. Description of the Invention (The holding force between the Q and the third and fourth snap studs 402 and 404 will be sufficiently obtained. Therefore, the light guide plate 224 can be prevented from moving toward the lamp 221 due to an external impact. Since the first and second convex bodies 224a and 224b have a tapered shape and the width thereof is narrowed toward the second end portion, the light emitted from the lamp 221 can be prevented from being concentrated. The gap ' between the light plate 224 and the side wall of the mold frame 4' can be sufficiently maintained except for the portions of the first and second protrusions 224a and 224b that are fixed, so that the gap can be avoided. The light guide plate 224 is bent due to temperature and humidity. On the other hand, as shown in Fig. 11, on the two side walls of the mold frame 4, corresponding to the first and second convex bodies 224a, 224b, and three The first and second recesses 41A and 412 are respectively disposed on the side wall, and the first and second protrusions 224a and 224b are respectively accommodated therein, and the first protrusions are shown in the drawings 13 and 14 224a' is accommodated in the first recess 410 shown in Fig. 11. Referring to Fig. 13, the width t3 of the first recess 410 is larger than the first convex body 2 The thickness t1 of 24a' is smaller than the thickness t2 of the buckle 224a. That is, the depth of the first recess 410 is sufficient to accommodate the first protrusion 224a, and the first protrusion 224a' is accommodated in the first recess 41〇 The depth in the middle can be adjusted by the third buckle 224a, as shown in Fig. 14. Although not shown, the second recess for accommodating the second protrusion 224b' also has the first recess. 41〇 the same shape. As shown in Fig. 10, the holding force between the third and fourth buckles 224a, 224b and the third and fourth snap posts 402, 404 will be fully obtained, so The light guide plate 224 is prevented from moving toward the lamp 221 in the mold frame 4 due to an external impact. The paper size is applicable to the Chinese national standard (which) A4 specification (21〇χ297 public Chu) 19 (Please read the back of the note first) Please fill out this page again)

1293137 A7 _______B7_ V. Description of the invention (1 today. (Please read the note on the back and fill in this page first) If the external impact is not applied to the lamp 221 in the frame 400, it is applied to the frame 400 to accommodate The first and second protrusions 224a, 224b of the light guide plate 224 will first contact the sidewalls of the mold frame 400 on the side walls of the first and second protrusions 224a, 224b. The first and second recesses 410 and 412 can accommodate the first and second protrusions 224a, 224b until they contact the third and fourth buckles 224a, 224b. The bodies 224a' and 224b avoid collision with the mold frame 410 and avoid damage. In particular, when the openings of the first and second pockets 410, 412 face the third and fourth buckles 224a, 224b and When the sidewall of the light guide plate 224 contacts the sidewall of the mold frame 400, the movement of the first and second protrusions 224a, 224b stops. In other words, the sidewall of the light guide plate 224 completely contacts the mold frame 400. The side wall 'the movement of the light guide plate 224 will be removed. Please refer to FIGS. 15 and 16 , the light guide plate 224 can also be combined The mold frame 400 has its first and second protrusions 224a, 224b received in the first and second pockets 410 and 412 at a desired depth, respectively. On the other hand, when the first and second protrusions are When the bodies 224a' and 224b are respectively inserted into the first and second pockets 410 and 412, which can be similar to the horizontal movement of the light guide plate 224, the light guide plate 224 can be prevented from being released by the mold frame 400. Moving to the astigmatism sheet 226. The light guide plate 224 is prevented from being separated from the mold frame 400 toward the astigmatism sheet 226, and can also be achieved by using the third and fourth buckle covers 406 and 408. As shown in Fig. 16, when by the lamp 221 In the direction, the thickness of the region where the first buckle 224a overlaps with the first snap post 402 is smaller than the paper guide of the light guide plate. The Chinese National Standard (CNS) A4 specification (210X297 public) -20 - 1293137 A7 ___B7 ___ V. The thickness of the invention (1) 224. Preferably, the thickness of the region where the first buckle 224a overlaps with the first snap post 402 is equal to the thickness of the first protrusion 224a. Embodiments ~ Hereinafter, an LCD according to a second embodiment of the present invention will be described with reference to Figs. 17 to 21. An exploded perspective view of the LCD of the second embodiment. Referring to FIG. 17, the LCD of the second embodiment has the same configuration as the LCD of the first embodiment shown in FIG. 6, except for a backlight. And the back cover 400a. That is, the LCD of the second embodiment shown in Fig. 17 is a monitoring device using two lamps. In the second embodiment, the LCD is different from the sixth embodiment. Components having the same function are denoted by the same reference numerals. As shown in Fig. 17, the backlight assembly 220, which can provide uniform illumination to the display unit 21A, is disposed under the display unit 21b. The backlight assembly 22 has a first lamp 221a and a second lamp 2211) disposed on both sides of the liquid crystal display module 2 to generate light, and the two lamps 221a and 221b are first and second lampshades. Covered by 222a and 222b. The size of the light guide plate 224 corresponds to the panel 212 of the display unit 210, and the path of changing the light directs the light generated by the first and second lamps 221 & 22 lb to the display unit 21A. The light guide plate 224 can be a plurality of light guide plates or a single light guide plate. The display unit 210 and the backlight assembly 22 are supported by a mold frame as a container assembly. A back cover is made of a material that is isolated and reduces the EMI generated by the monitoring device, and is combined on the back of the frame * (9). Figure 18 is a view showing the light guide plate in the second embodiment of Fig. 17 is applied to the Chinese National Standard (CNS) A4 specification (210X297 mm) 21 (Please read the back note first and then fill in the page) ) - 0m, 1293137 A7 B7 άα/ V. Description of the invention (the state of being mounted in the mold frame. Fig. 19 is a plan view showing the construction of the light guide plate in the second embodiment of Fig. 17. First, please read the note on the back side. Please refer to FIG. 18. The first end of the light guide plate 224, that is, the first end of the side wall facing the receiving space of the mold frame facing the first lamp 221a. The second corner portion is cut to form a fifth buckle 224a and a sixth buckle 224b. Further, the light guide plate 224 is opposite to the second end of the first end portion, that is, facing the second lamp 22 lb is mounted on the two corners of the second end of the side wall of the receiving space of the mold frame 400, and is also cut to form a seventh buckle 224c and an eighth buckle 224d. The total width W1' of the first end portions of the buckles 224a and 224b is the second end portion provided with the seventh and eighth buckles 224c and 224d The widths W2' are the same. The third, fourth, fifth, and sixth protrusions 224a', 224b'' 224c', 224d', etc. are respectively disposed in the fifth, sixth, seventh, and eighth buckles 224a, The sides of the first and second ends are wider than the width W1 of the central portion of the light guide plate 224. The third, fourth, fifth, and sixth protrusions 224a are 224b, 224c, 224d. , 224b, 224c, 224 (Γ have a thickness less than the thickness of the fifth, sixth, seventh, and eighth buckles 224a, 224b, 224c, 224d, respectively. It will refer to the 19th and The first lamp 221a and the first lamp cover 222a are mounted on the first end of the light guide plate 224 in the accommodating space in which the light guide plate 224 is accommodated. One side, and the second lamp 221b and the second lamp cover 222b are mounted on a side facing the second end. The fifth and sixth snap studs 402 and 404 are compatible with the fifth and sixth buckles. 224a and 224b fit together to prevent the guideline 22 from applying the Chinese National Standard (CNS) Α4 specification (210X297 mm) 1293137 A7 B7. The light plate 224 moves toward the first lamp 221a, and is integrally formed with the mold frame 400 at the two corner portions of the side wall where the first lamp 221a is located. The seventh and eighth snap posts 426 and The 428 can be engaged with the seventh and eighth buckles 224c and 224d to prevent the light guide plate 224 from moving toward the second lamp 221b, and is disposed on the second lamp 2 21 integrally with the frame 400. The two corners of the side wall where b is located. As shown in FIG. 18, when the light guide plate 224 is received in the receiving space of the mold frame 400, the fifth buckle 224a and the fifth snap post 402, the sixth buckle 224b and the sixth buckle The protrusion 404, the seventh buckle 224c and the seventh buckle post 426, the eighth buckle 224d and the eighth snap post 428, etc., will be respectively engaged with each other to prevent the light guide plate 224 from moving horizontally. . Referring to Fig. 20, the gap between the fifth buckle 224a and the mold frame 400 is narrower than the gap between the central portion of the light guide plate 24 and the mold frame 400. This is because the third protrusion 224a' is integrally fixed to the side wall of the fifth buckle 224a. The third projection 224a' has a tapered shape, and its width W5 is narrowed as it advances toward the center of the light guide plate 224. Each of the projections and the like having the same shape as the third projection 224d is also provided on each of the side walls of the sixth, seventh, and eighth buckles 224b, 224c, and 224d of the light guide plate 224. The holding force between the fifth, sixth, seventh, and eighth snaps 224a, 224b, 224c, 224d and the fifth, sixth, seventh, and eighth snap posts 402, 404, 406, 408 , will be added to the third, fourth, fifth, sixth convex bodies 224a', 224b', 224c, 224 (1' width W5, W6, W55, W6, as shown in Figure 19. Show, the fifth, sixth, seventh, and eighth buckles 224a, 23 (please read the note on the back and then fill out this page) This paper scale applies to the Chinese National Standard (CNS) A4 specification (210X297 mm) 1293137 A7 B7 V. Inventive Description (4 224b, 224c, 224d width W3, W4, W3', W4, in the third, fourth, fifth, sixth convex body 224a', 224b', 224c', 224d 'It is fixed before the fifth, sixth, seventh, and eighth buckles 224a, 224b, 224c, and 224d. However, if the third, fourth, fifth, and sixth protrusions 224a', 224b', 224c', 224d' are respectively fixed to the sidewalls of the fifth, sixth, seventh, and eighth buckles 224a, 224b, 224c, 224d, and the width W1' of the first end of the light guide plate 24 The width W2' of the second end portion is wider than the width W7 of the central portion of the light guide plate 224 by the widths W5 and W6 of the third and fourth protrusions 224a' and 224b'. Therefore, as in the 19th As shown, the holding force between the buckles 224a, 224b, 224c, 224d and the respective snap posts 402, 404, 426, 428 is fully obtained. Therefore, the light guide plate 224 can be protected from The external force impacts to move the first lamp 22 la or the second lamp 22 lb. Also, since the protrusions 224a', 224b', 224c', 224d' each have a tapered shape, and have a width W5, W6 , W5', W6' will be narrowed toward the central portion of the light guide plate 224, so that the light concentrated by the first and second lamps 221a and 221b can be prevented from being concentrated. Fig. 20 is the light guide plate 224 of Fig. 19. A cross-sectional view of the first end portion. As shown in Fig. 20, the thickness tl of the third and fourth convex bodies 224a' and 224b' is smaller than the thickness t2 of the fifth and sixth buckles 224a and 224b. The thicknesses of the sixth protrusions 224c' and 224d' are also smaller than the thicknesses of the seventh and eighth buckles 224c and 224d, respectively, and the third, fourth, fifth, and sixth protrusions 22 4a', 224b', 224c', 224d', etc. have the same thickness. Fig. 21 shows the structure of the mold frame in Fig. 18. Please refer to Fig. 21, the third, fourth, and 5, the sixth recess 410, 24 (please read the note on the back and fill in this page) This paper scale applies to China National Standard (CNS) A4 specification (210X297 mm) 1293137 A7 _B7_ V. Invention description (please first 412, 414, 416 are respectively disposed on the two side walls of the mold frame 400, that is, corresponding to the third, fourth, fifth, and sixth convex bodies 224a', 224b'. , 224c', 224d' on the side wall, and can accommodate the protrusions 224a', 224b', 224c', 224d'. As in the first embodiment, the height of the openings of the recesses 410, 412, 414, 416 is greater than the thickness tl of the respective protrusions 224a', 224b', 224c, 224d, but less than the fifth and sixth The thickness t2 of the seventh and eighth buckles 224a, 224b, 224c, 224d. That is, the pockets 410, 412, 414, 416 each have a depth sufficient to accommodate the projections 224a', 224b', 224c', 224d'. The depth of each of the projections 224a, 224b', 224c', 224d' received in each of the pockets 410, 412, 414, 416 can be adjusted by each of the buckles 224a, 224b, 224c, 224d. As shown in FIG. 21, since the amount of the snap between each of the buckles 224a, 224b, 224c, 224d and each of the snap posts 402, 404, 426, 428 is sufficiently obtained, the light guide plate 224 can be prevented. The lamp 221 in the mold frame 400 moves due to an external force impact. In a state where the light guide plate 224 is accommodated in the mold frame 400, if the external force impact is applied to the side walls of the mold frame 400, that is, the respective protrusions 224a', 224b', 224c, 224d, then Each of the protrusions 224a, 224b, 224c', 224d' of the light guide plate 224 will first contact the side walls of the mold frame 400. At this time, since the pockets 410, 412, 414, 416 accommodate the protrusions 224a', 224b', 224c', 224d' until they contact the buckles 224a, 224b, 224c, 224d, The projections 224a, 224b, 224c', 224d' will avoid collision with the mold frame 400 and prevent damage. This paper scale applies to the Chinese National Standard (CNS) A4 specification (210X297 public Chu) -25 - 1293137 A7 B7 5. Inventive Note (4 At the same time, the light guide plate 224 can also be combined in the mold frame 400, so that each convex The bodies 224a', 224b', 224c', 224d' are respectively received in the recesses 410, 412, 414, 416 at a desired depth. Therefore, the light guide plate 224 is prevented from being directed by the mold frame 400 toward the diffuser 226. Further, when viewed from the angle of the first lamp 22la or the second lamp 22lb, the buckles 224a, 224b, 224c, 224d overlap with the respective snap posts 402, 404, 426, 428, respectively. The area has a smaller thickness than the light guide plate 224. Preferably, the thickness of the region where the respective buckles 224a, 224b, 224c, 224d and the respective snap posts 402, 404, 426, 428 overlap, respectively. The same as the convex bodies 224a', 224b, 224c, 224 (the thickness of the Γ. According to the liquid crystal display module and the LCD, the buckles are arranged to be accommodated in the mold frame. The ends of the light guide plates of the lamp are at the two corners, and the protrusions have a tapered shape which protrudes outward from the side walls of each of the buckles. The pockets are respectively disposed on the side wall of the mold frame corresponding to the convex body to accommodate the convex bodies, and the density is greater than the thickness of the convex body, but smaller than the thickness of the buckle. Therefore, due to the mold frame The fastening force between the buckle stud and the buckle of the light guide plate can be greatly increased, so that the snap post of the mold frame can firmly fit the buckles respectively, and the light guide plate can be prevented from moving toward the lamp. Even when an external impact is applied to the LCD, in addition, even if the external force impact is applied to the side wall of the mold frame, the convex bodies and the buckles can be prevented from being damaged because the convex systems are respectively accommodated. In the recess of the mold frame, and because the convex system has a tapered shape, the light concentration input by the lamp can be prevented. Although the preferred embodiment of the present invention has been described above, it should be understood that the present invention 26 (Please read the notes on the back and fill out this page.) This paper size applies to the Chinese National Standard (CNS) A4 specification (210X297 mm) 1293137 A7 B7

5. The invention is not limited thereto, and various modifications can be made by professionals, and are included in the spirit and scope of the invention within the scope of the following patent application. (Please read the back Note: Please fill in this page again. 27 This paper scale applies to China National Standard (CNS) A4 specification (210X297 mm) 1293137 A7 ____ B7 V. Invention description (2, component label comparison 1〇〇··· Liquid crystal display device 406, 408... buckle cover 200... liquid crystal display module 410, 412, 414, 416 · · recess 210 · · display unit 700 ... liquid crystal display module 212 · liquid crystal display panel 710 ... display unit 212a ... TFT substrate 712 ...liquid crystal display panel 212b...CF substrate 712a...thin film transistor substrate 214···integrated printed circuit board 712b...color filter substrate 216··data side strip-shaped carrier package 714...integrated printed circuit board 218···gate Side flexible circuit board 716... data side strip carrier package 220··· backlight assembly 718... gate side flexible circuit board 221, 221a, 221b ... lamp 720... backlight assembly 222, 222a, 222b... lampshade 721... Light 224··· Light guide plate 722... lamp cover 224a, b, c, d··· buckle 724... light guide plate 224a', b, c', d, · · · convex body 724a, b ... buckle 226 ... astigmatism sheet 726 ... astigmatism Sheet 228···reflector 728...reflector 300...casing 730...module 310...front case 731,732—^ button post 320...back case 740...frame 400...module frame 810...front case 400a...back cover 820... Rear case 402, 404, 426, 428 · · · Snap column 900 ... Liquid crystal display device (please read the back note before filling this page) This paper size applies to China National Standard (CNS) A4 specification (210X297 public ) 28

Claims (1)

1293137 VI. Patent Application No. 90119881 Patent Application Revision Patent Revision This revision period: August, 1996 1. A liquid crystal display module, including a light guide plate for guiding light emitted by a light unit to a display The unit is configured to display an image, the light guide plate has a buckle, and the protrusion is formed by cutting at least one corner of the first end of the light from the lamp unit. One of the side walls extends outwardly and has a thickness smaller than the thickness of the buckle; and a mold frame can accommodate the light guide plate and the lamp unit, the mold frame has a buckle pillar and a recess, the card a buckle protrusion is disposed on the bottom surface of the mold frame corresponding to the first position of the buckle, and is sprayed with the buckle to fix the light guide plate in the mold frame, and the pocket is disposed in the mold A second position on the side wall of the frame corresponding to the protrusion to accommodate the protrusion. 2. The liquid crystal display module of claim 1, wherein the convex system is formed into a tapered shape, wherein a width is gradually reduced from the first end toward a central portion of the light guide plate. 3. The liquid crystal display module of claim 1, wherein the light guide plate is a wedge type light guide plate, and the thickness thereof is gradually changed from the first end portion toward the second end portion opposite to the first end portion. Thinning. 4. The liquid crystal display module of claim 1, wherein the recess provided on the side wall of the frame has a width greater than a thickness of the protrusion but less than a thickness of the buckle. 5. The liquid crystal display module of claim 1, wherein the thickness of the region is the same as the thickness of the protrusion, and in the region 28^------ Circumference VI. Application for Patent Scope 6·- Kind::: When the direction is viewed, the buckle is overlapped with the buckle column. a liquid day display device comprising: ········································································· Extension, #且古_ / convex body. 亥扣颚- sidewall one, 'eight has a thickness thinner than the thickness of the buckle; _ frame can accommodate the guide key and the lamp unit has a mouth The stud and the 'cavity' are provided on the bottom surface of the mold frame at the first position of the buckle, and can be combined with the buckle (four) to fix the 'board in the mold frame And the recess is disposed in one of the mold frames, the wall field is at the second position of the convex body to accommodate the convex body; and _: the top frame, which is relatively coupled to the mold frame, can be displayed The liquid crystal display device of the sixth aspect of the invention, wherein the convex (four) is formed into a tapered shape, wherein the width is The _ end portion is gradually reduced toward the central portion of the light guide plate. 8. The liquid crystal display device of claim 6, wherein The light guide plate is a wedge type light guide plate, and the thickness thereof is gradually thinned from the first end portion toward the second end portion opposite to the first end portion. 9. The liquid crystal display device of claim 6 The recess provided on the side wall of the mold frame has a width greater than the thickness of the convex body but less than the thickness of the buckle. 10. A liquid crystal display device according to claim 6 of the patent application, wherein an area Ϊ 293137 6. Patent application scope The thickness of the buckle is the same as the thickness of the convex body, and the buckle is overlapped with the buckle column when viewed from the direction of the lamp unit in the region. The liquid crystal display module of claim 2, wherein the mold frame further has a buckle cover formed on a corner portion of the side wall of the mold frame opposite to the buckle post to avoid the light guide plate. The liquid crystal display device of the sixth aspect of the invention, wherein the mold frame has a buckle cover formed on a side of the side wall of the mold frame opposite to the buckle post Corner portion to avoid the light guide plate facing vertical Deviating from the module. • A liquid crystal display module, comprising: a light guide plate for guiding light emitted by a light unit to a display unit to display an image, and a mold frame, the mold frame can accommodate the light guide plate And the lamp unit, the K is busy, and has a buckle cover, and the buckle cover is formed at a corner of the side wall of the mold frame to prevent the light guide plate from deviating from the mold frame in a vertical direction.