TW550527B - Liquid crystal display monitor with a reduced thickness - Google Patents

Abstract

An LCD monitor includes a main frame, a display panel installed inside the main frame for displaying picture images, a light tube array disposed behind the display panel for generating light, a reflection plate fixed behind the light tube array for reflecting light generated by the light tube array, a supporting framework installed on the reflection plate for holding the display panel, a circuit board for controlling the operations of the LCD monitor, and a chassis fixed to the main portion of the reflection plate for supporting the LCD monitor.

Description

550527 5. Description of the invention (1) Field of the invention: The present invention provides a liquid crystal display, especially a liquid crystal display with a reflection plate as a frame structure. Background: With the advancement of science and technology, computers have been widely used in individuals and companies. For ordinary individuals, due to the maturity of multimedia technology, and the powerful ability of the computer to display realistic image effects, the display has become a computer system S1 important peripheral equipment. Currently commonly used displays are cathode ray tube (CRT) displays and liquid crystal displays (LCDs). The cathode ray tube display uses an electron beam to excite the fluorescent substance to produce various colors. Therefore, it takes 7 large power to provide the cathode ray tube to generate the electron beam and requires a large volume to absorb the cathode ray tube. If the screen displays The larger the size, the greater the need for the user to use a larger space to accommodate the cathode ray tube display, which often causes inconvenience in the display, and the cathode ray tube is displayed on the image, which will generate electromagnetic radiation, so Health effects for users1. Therefore, liquid crystal displays (Liquid Crystal Disp / a · LCD) are gradually accepted by users to replace cathode ray tube displays as mainstream products in the field, because LCD displays are not only small in size, but also low in market capitalization. In addition, The liquid crystal display will not produce electromagnetic radiation of human hair. Healthy electricity

550527 5. Description of the invention (2) Please refer to FIG. 1. FIG. 1 is a schematic diagram of constituent elements of a conventional direct type liquid crystal display 10. The liquid crystal display includes an upper frame 12 and a lower frame 24 for fixing the internal components of the liquid crystal display. The liquid crystal panel 14 is used to display an image screen. A diffuser 1 is used to make the light uniform. The lamp tube group 20 is used to generate white light, a reflecting plate 22 is used to reflect the light generated by the lamp officer group 20, and a chassis 25 is used to support the liquid crystal display 10. When the light tube group 20 emits light on the diffuser plate 8 or reflects the light emitted by the light tube group 20 to the diffuser plate via the reflection plate 22! At 8 o'clock, the diffuser plate 18 will make the light uniform, so that the white light can be evenly illuminated on the liquid crystal panel 14. Please refer to FIG. 2 and FIG. 1. FIG. 2 is a bottom view of the reflecting plate 22 shown in FIG. An X-axis control board (x_b〇ard) 30 is provided on the back of the reflecting plate 22, a Y-board 32 and a liquid crystal panel are respectively connected, and an analog / digital converter (A / D board) 34 is used. The analog signal is converted into a digital signal, a control board 35 is connected to the X-axis control board 30 and the Y-axis control control board 32, and a connector 36 is connected to the analog / digital converter 34. Among them, the connector 36 can receive a signal input by an image device (such as a graphics card), and the signal can be converted into a digital signal by an analog / digital converter 34, and then input into the control board 35, and then the control board 3 5 Corresponding signals are generated and output to the X-axis control board 30 and Y-axis control board 32, respectively. Via the X-axis control board 30 and Y-axis control board 32, the corresponding control signals are generated to the LCD panel 14 and Output image screen.

550527 V. Description of the invention (3) Generally speaking, direct-type liquid crystal displays are used for large display size liquid crystal displays, because the lamp group 20 itself can generate a wide range of light sources, and the light sources are directly arranged below the display. Therefore, a heavy light guide plate is not needed to reduce the overall display weight. However, due to the use of the lamp tube 20, there must be enough space to diffuse the light source, so the direct type liquid crystal display itself is not easy to be made thin. In addition, the conventional technology mounts the control element between the reflecting plate 22 and the lower frame 24, thereby increasing the thickness of the liquid crystal display and causing inconvenience in use and installation.

Summary of the Invention: The main object of the present invention is to provide a liquid crystal display capable of reducing the thickness of the device to solve the above problems.

The patent protection scope of the present invention provides a screen including a main frame, a display panel installed in the main frame to display an image, a lamp tube set behind the display panel to generate light, and a reflecting plate fixed to the lamp. The rear of the tube group reflects the light generated by the lamp tube group, and a support frame is arranged on the reflective plate to support the display panel. The reflecting plate includes a flat plate and two side plates, and each side plate forms an oblique angle with the flat plate. The screen further includes a circuit board attached to at least one side panel to control the operation of the screen.

Page 7 550527 V. Description of the invention (4) Detailed description of the invention: Please refer to FIGS. 3 to 5. FIG. 3 is a schematic diagram of the direct-type liquid crystal display 40 of the present invention, and FIG. 4 is a schematic diagram of the constituent elements of the liquid crystal display 40. FIG. 5 is a cross-sectional view of the liquid crystal display 40 shown in FIG. 3 along a tangent line 5-5. The direct type liquid crystal display 40 includes a main frame 42 for protecting and fixing internal components, a display panel 44 installed in the main frame 42, a lamp group 48 disposed behind the display panel 4 4 to generate white light, and a diffuser 4 6 It is arranged between the display panel 4 4 and the lamp tube group 4 8 to evenly diffuse the light generated by the lamp tube group 4 8, a reflecting plate 50 is fixed at the rear of the lamp tube group 4 8, and a support frame 5 1 is installed on the reflection The board 50 is used to support the display panel 44 and the diffusion plate 46, a circuit board 52 is used to control the display panel 44, a connector 54 is used to receive signals input by the imaging device, and a chassis 56 is used to support LCD display 40. The reflecting plate 50 includes a flat plate 5 7 and two side plates 5 8 and 5 9. Each side plate 5 8 and 5 9 forms an oblique angle with the flat plate 5 7. The supporting frame 51 includes four frames 53 a, 53 b, 53 c, and 53 d. Among them, the bezels 53a, 53b and the flat plate 57 also form an oblique angle to reflect the light generated by the lamp group 4 8, and the bezels 5 3 c and 5 3 d are used to make the structure of the support frame 5 1 more Stable for fixation and support. In addition, a space 6 is formed between the side frame 5 3a and the side plate 58 by a predetermined gap. Therefore, in this embodiment, the support frame 5 丨 is used to support the liquid crystal display 4o, so that the liquid crystal display 40 is stronger and able to resist the influence of the external force on the structure of the liquid crystal display 4o, and the frames 53a, 53b, 53c, 53d and the flat plate 57 of the reflective plate 50 together form a reflective surface for reflecting the light generated by the tube group 48. The circuit board 5 2 includes at least an X-axis control board 6.

550527 V. Description of the invention (5) Driving vertical data, a control board 6 2 is used to control the X axis control board 60, and an analog / digital converter 64 is used to convert analog signals into digital signals. The board 52 may be a rigid circuit board or a flexible printed circuit board. In this embodiment, the circuit board 52 and the connector 54 of the direct-type liquid crystal display 40 are mounted on the side plate 58 of the reflective plate 50, and the present invention uses a space 6 6 to place one on the side plate 58. The connector 5 4 and a circuit board 52 are used to prevent the circuit board 5 2 and the connector 5 4 from detaching from the side plate 5 8 when the user carries the liquid crystal display 40 and the liquid crystal display 40 is impacted by an external force. Therefore, the liquid crystal display 40 of the present invention uses the frame 5 3 a to fix the components on the side plate 5 8, and adjusts the distance between the frame 5 3 a and the side plate 5 8 to make both the frame 5 3 a and the side plate 5 8 The circuit elements on the side plate 58 are embedded and clamped to achieve a fixed effect. In order to reduce the weight of the liquid crystal display 40, the support frame 51 can be made of a material such as plastic. In addition, the multi-layer printed circuit board method can be used to integrate various control boards, such as X-axis control boards, analog / digital converters, etc., into a circuit board 5 2 through printed circuit board assembly (PCB A). Therefore, the present invention can mount the circuit board 52 under the existing area of the side plate 58. In addition, the circuit board 52 also includes an electromagnetic interference shield around the circuit board 52 to shield the electromagnetic radiation generated by the circuit board 52. In addition, one end of the chassis 5 6 is fixed to the rear side of the reflecting plate 50 to support the reflecting plate 50. That is, the chassis 5 6 uses the reflecting plate 50 directly as a frame structure of the liquid crystal display 40 to support the entire structure. LCD display 40.

550527 V. Description of the invention (6) In this embodiment, one end of the base frame 56 can also be fixed to the bottom side of the main frame 42 to support the entire liquid crystal display 40 through the main frame 42. In addition, the frame 53b may be used to form another space with the side plate 59. As shown in the frame 53a and the side plate 58, the circuit board 52 may be partially attached to the side plate 58 of the reflective plate 50, and other portions Attachment to the side plate 5 9 to make full use of the space between the side plates 5 8, 5 9 and the support frame 51, or only to the side plate 5 9 of the reflection plate can reduce the thickness of the liquid crystal display 4 〇 the goal of. Compared with the external frame, the present invention is advantageous. The circuit required to use the circuit to set up the LCD display must be installed separately. However, the present invention can be used. The scope of this development layer is small and further reduced to the reflective plate. The board is located between the reflectors. Because each control panel only needs to be electromagnetic, low-production rear, components, and direct-type LCDs have multiple printed circuit assemblies with multiple control and support frames. The thickness of the side panels of the board also increases. The model using a protective layer mounted on the side plate around the board can be cost effective. In addition, it is necessary to reduce the space on the electromagnetic shielding circuit board when the space between the 5 f board and the printed board is reduced. Because the frame is designed to control each room, it is necessary to control the shadow room. The technology of the brush circuit is straightforward due to the placement. The protective layer is based on the surrounding technology, magnetic protection, and the conventional control technology. It is placed on the control signal for the inverse image signal. The existing side panel is assembled (the various controls can be used to reduce the size of the LCD. Furthermore, it is necessary to avoid the electromagnetic shielding. The technique required for the electrical layer is to integrate the control panel and the rear panel into a radiation plate. However, the board area is printed to make the panel straight down. The display is known to interfere with the technology. The protective layer is a magnetic protective material.

550527 V. Description of the invention (7) The circuit board, and the circuit board is installed on the inner plane of the side plate of the reflecting plate by using the gap between the reflecting plate and the supporting frame, so the present invention can only protect the side plate by using a side plate of a reflecting plate Circuit board. In addition, the present invention uses the flat plate of the reflective plate as a frame structure to replace the conventional lower frame of the liquid crystal display 'to support the entire display through the connection of the bottom plate and the flat plate of the reflective plate, so the present invention can be achieved without additional frames The function of protecting the circuit board and supporting the display can greatly reduce the materials required for manufacturing the frame in the conventional technology, and further reduce the production cost. The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the scope of the patent application for the present invention shall fall within the scope of the invention patent.

550527 Brief description of the drawings Brief description of the drawings: Figure 1 is a schematic diagram of the components of a conventional direct type liquid crystal display. FIG. 2 is a bottom view of the reflecting plate shown in FIG. 1. FIG. FIG. 3 is a schematic diagram of a direct type liquid crystal display according to the present invention. FIG. 4 is a schematic diagram of constituent elements of the direct-type liquid crystal display of FIG. 3. Fig. 5 is a cross-sectional view of the liquid crystal display shown in Fig. 3 along a tangent line 5-5.

Explanation of the symbols of the drawings: 40 LCD display 42 main frame 44 display panel 46 diffuser plate 48 lamp tube group 50 reflector plate 51 support frame 52 circuit board 5 3a, 53b, 53c, 53d frame 54 connector 56 chassis 60 X-axis control Board 62 control board 64 analog / digital converter

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Claims (1)

550527 6. Scope of patent application 1. A screen including: a main frame; a display panel installed in the main frame to display an image; a lamp tube set behind the display panel to generate light; a reflection A plate, which is fixed behind the lamp tube group to reflect the light generated by the lamp tube group, the reflecting plate includes a flat plate and at least one side plate, and the side plate is at an oblique angle to the flat plate; A support frame is disposed on the reflecting plate to support the display panel. The supporting frame includes four bezels, at least one of which is at an oblique angle with the flat plate of the reflecting plate, and is used to reflect the light generated by the lamp tube group. The light is spaced a predetermined gap from the side plate, and a circuit board is disposed in the predetermined space for controlling the operation of the screen. 2. The screen described in item 1 of the scope of patent application, wherein the display panel is a liquid crystal display panel. 3. The screen according to item 1 of the scope of patent application, further comprising a chassis, one end of which is fixed to the rear side of the reflecting plate to support the reflecting plate. 4. The screen according to item 1 of the scope of patent application, further comprising a base frame, one end of which is fixed to the bottom side of the main frame to support the main frame. 5. The screen described in item 1 of the scope of patent application, which further includes a diffusion Page 13