Liquid crystal display (LCD) panel and liquid crystal display screen

Abstract

The invention discloses an LCD liquid crystal display panel and a liquid crystal display screen, and relates to the technical field of liquid crystal display panels, the LCD liquid crystal display panel comprises a front frame, a display panel body, a middle frame, a backlight plate and a back plate, the front frame is rotatably provided with an insertion rod, the insertion rod is fixedly provided with a folded plate, the folded plate is fixedly provided with a long rod, and the long rod is fixedly connected with the display panel body. Elastic fiber cloth is fixedly mounted between the long rod and the inner wall of the front frame; the device comprises a back plate, a receiving cylinder is rotatably mounted on the back plate, a moving rod is slidably mounted in the receiving cylinder, a sliding disc is slidably mounted in the back plate, a rotating rod is inserted in the sliding disc, and the rotating rod is fixedly connected with the receiving cylinder. When the display screen is in a power-on state, the electromagnet adsorbs the iron sheet to enable the iron sheet to rise, so that the long rod is closed, the elastic limiting cloth is stored, and after the display screen is powered off, the coil spring drives the rotating rod to reset so as to drive the rotating rod to rotate, so that the long rod is driven to be opened, and the elastic fiber cloth is driven to cover the display panel body.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid crystal display panels, and in particular to an LCD liquid crystal display panel and a liquid crystal display screen. Background Art

[0002] The liquid crystal display device requires an additional light source or backlight assembly to emit light to the liquid crystal display panel, because the liquid crystal display device is a light receiving display device that performs display by adjusting the amount of light received from the outside; For example, the invention patent with publication number CN102799023B and name "Liquid Crystal Display Device" includes: a backlight module, a rubber frame arranged on the backlight module, a liquid crystal display panel arranged on the rubber frame, and a front frame arranged on the liquid crystal display panel. The backlight module includes: a back plate, a light bar installed on the back plate, and a graphite sheet arranged between the back plate and the light bar. The light bar includes an inverted U-shaped metal-based printed circuit board and a plurality of LED lights installed and electrically connected to the metal-based printed circuit board. The metal-based printed circuit board is clamped on the back plate, and then the light bar is installed on the back plate. The liquid crystal display device provided by the present invention clamps the light bar on the back plate through the inverted U-shaped metal-based printed circuit board, and a graphite sheet is arranged between the light bar and the back plate. The heat is conducted to the back plate through the graphite sheet for heat dissipation, thereby avoiding the difficulty of assembly or disassembly caused by the method of attaching the light bar by heat dissipation adhesive or screwing it, providing a simpler assembly or disassembly method and saving operation time.

[0003] Referring to the above patent, the backlight in the liquid crystal display panel usually needs to be disassembled and repaired for reasons such as repair and maintenance. The above patent only facilitates the disassembly and assembly of the light bar, while the disassembly and assembly of some existing display panels is still relatively inconvenient. At the same time, a common problem of the display panel is that it is easy to absorb dust when the power is turned off and not in use, causing the panel to be dirty and affecting the viewing effect. Summary of the invention

[0004] The object of the present invention is to provide an LCD liquid crystal display panel and a liquid crystal display screen to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an LCD liquid crystal display panel, comprising a front frame, a display panel body, a middle frame, a backlight plate and a back plate, wherein a plug rod is rotatably mounted on the front frame, a folding plate is fixedly mounted on the plug rod, a long rod is fixedly mounted on the folding plate, and an elastic fiber cloth is fixedly mounted between the long rod and the inner wall of the front frame; a receiving cylinder is rotatably mounted on the back plate, a moving rod is slidably mounted inside the receiving cylinder, a sliding plate is slidably mounted inside the back plate, a rotating rod is inserted inside the sliding plate, and the rotating rod and the receiving cylinder are fixedly connected; An electromagnet is fixedly installed inside the back plate, and an iron sheet is fixedly installed on the rotating rod.

[0006] Preferably, a limit block is fixedly installed on the surface of the insertion rod, a plug hole and a stop hole connected to the plug hole are opened on the surface of the middle frame, and a slot and a stop groove connected to the slot are opened inside the receiving tube.

[0007] Preferably, a convex plate is fixedly mounted on the sliding plate, an insert plate is slidably mounted inside the back plate, an inclined block is fixedly mounted on the convex plate, a triangular block is fixedly mounted on the insert plate, and the hypotenuse of the inclined block abuts against the triangular block.

[0008] Preferably, a light bar is arranged inside the back plate, and a side bar is fixedly mounted on the side wall of the light bar, a groove is formed on the side bar, and a protrusion matched with the groove is fixedly mounted on the plug plate.

[0009] Preferably, a coil spring is fixedly installed between the rotating rod and the back plate.

[0010] Preferably, a sliding rod is vertically slidably installed inside the back plate, and an arc block is fixedly installed on the surface of the sliding rod.

[0011] Preferably, a vertical bar is fixedly mounted on the plug plate, a connecting bar is fixedly mounted on the vertical bar, a gear is rotatably mounted in the back plate, and a tooth groove is provided on the connecting bar.

[0012] Preferably, a telescopic strip is slidably mounted on the long rod.

[0013] Preferably, a connecting spring is fixedly installed between the plug board and the back board.

[0014] A liquid crystal display screen comprises the LCD liquid crystal display panel described in any one of the above.

[0015] In the above technical scheme, the present invention provides an LCD liquid crystal display panel and a liquid crystal display screen, which have the following beneficial effects: when the display screen is powered on, the electromagnet attracts the iron sheet to make it rise, thereby closing the long rod and storing the elastic limiting cloth; when the display screen is powered off, the coil spring will drive the rotating rod to reset, thereby driving the rotating rod to rotate, thereby driving the long rod to open, and driving the elastic fiber cloth to cover the display panel body to prevent dust from falling on the display screen when it is not in use and affecting subsequent use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 A schematic diagram of a three-dimensional structure provided by an embodiment of the present invention; Figure 2 A schematic diagram of the disassembly part structure provided by an embodiment of the present invention; Figure 3 The embodiment of the present invention provides Figure 1 A partial structural diagram of Figure 4 The embodiment of the present invention provides Figure 3 A schematic diagram of the structure at A; Figure 5 The embodiment of the present invention provides Figure 2 A partial structural diagram of Figure 6 The embodiment of the present invention provides Figure 5 Schematic diagram of the structure at B; Figure 7 A schematic diagram of a portion of the structure of a light bar provided by an embodiment of the present invention; Figure 8 The embodiment of the present invention provides Figure 7 Schematic diagram of the structure at C; Fig. 9 A partial structural schematic diagram of a jack provided in an embodiment of the present invention.

[0018] Description of reference numerals: 1. Base; 2. Front frame; 3. Display panel body; 4. Middle frame; 41. Plug hole; 42. Stop hole; 5. Backlight panel; 6. Back panel; 71. Insert rod; 72. Limit block; 73. Folding plate; 74. Long rod; 75. Telescopic strip; 81. Receiving tube; 82. Moving rod; 83. Sliding plate; 83.1. Convex plate; 84. Rotating rod; 85. Coil spring; 86. Sliding rod; 86.1. Arc block; 87. Electromagnet; 88. Oblique block; 89. Insert plate; 810. Light strip; 811. Side rod; 812. Triangular block; 91. Vertical bar; 92. Connecting bar; 93. Gear. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0020] See also Figure 1-9, an LCD liquid crystal display panel and a liquid crystal display screen, comprising a front frame 2, a display panel body 3, a middle frame 4, a backlight panel 5 and a back plate 6, a plug rod 71 is rotatably mounted on the front frame 2, a folding plate 73 is fixedly mounted on the plug rod 71, a long rod 74 is fixedly mounted on the folding plate 73, and an elastic fiber cloth is fixedly mounted between the long rod 74 and the inner wall of the front frame 2; a receiving tube 81 is rotatably mounted on the back plate 6, a moving rod 82 is slidably mounted inside the receiving tube 81, a sliding plate 83 is slidably mounted inside the back plate 6, a rotating rod 84 is inserted inside the sliding plate 83, and the rotating rod 84 is fixedly connected to the receiving tube 81; an electromagnet 87 is fixedly mounted inside the back plate 6, and an iron sheet is fixedly mounted on the rotating rod 84; When the display screen is powered on, the electromagnet 87 attracts the iron sheet to make it rise, thereby closing the long rod 74, so that the elastic limiting cloth is stored. When the display screen is powered off, the coil spring 85 drives the rotating rod 84 to reset, so as to drive the rotating rod 84 to rotate, thereby driving the long rod 74 to open, and driving the elastic fiber cloth to cover the display panel body 3. The back of the back plate 6 is fixedly mounted with a base 1 for placement and use.

[0021] In another embodiment of the present invention: a limit block 72 is fixedly installed on the surface of the insertion rod 71, a plug hole 41 and a stop hole 42 connected to the plug hole 41 are opened on the surface of the middle frame 4, and a slot and a stop groove connected to the slot are opened inside the receiving tube 81; The size of the jack 41 and the slot is matched with the size of the plug rod 71, and the size of the stop hole 42 and the stop groove is matched with the size of the limit block 72. When installing the display screen, the backlight panel 5 is placed in the back panel 6, and then the middle frame 4 is inserted into the back panel 6, and the display panel body 3 is inserted into the front frame 2. Then, the plug rod 71 on the front frame 2 passes through the middle frame 4 through the jack 41 until the plug rod 71 is inserted into the slot. At this time, the front frame 2 will cooperate with the middle frame 4 to squeeze the display panel, and the middle frame 4 also cooperates with the back panel 6 to limit the backlight panel 5, wherein the backlight panel 5 is provided with an optical component; When installing, manually press the upper and lower long rods 74 inwards. Figure 3 and Fig. 9, the angle of the stop hole 42 on the middle frame 4 is slightly tilted downward. When the long rod 74 is pressed to rotate the insertion rod 71 on it to the limit angle, the limit block 72 on the insertion rod 71 will be aligned with the insertion hole 41 and the slot, and then the front frame 2, display panel, middle frame 4, backlight panel 5 and back plate 6 are installed. At this time, the limit block 72 on the insertion rod 71 will be inserted into the slot without hindrance, and then the long rod 74 is released, and the slide bar 86 is moved and inserted into the back plate 6. At this time, the slide bar 86 will push the iron sheet to reset. At this time, the iron sheet will drive the rotating rod 84 and the receiving tube 81 to reset. At this time, the limit block 72 rotates to a horizontal position, so that the limit block 72 and the stop hole 42 are misaligned, so that the insertion rod 71 will not be pulled out again, thereby ensuring the installation stability of the display screen.

[0022] In another embodiment of the present invention: a convex plate 83.1 is fixedly mounted on the sliding plate 83, a plug plate 89 is slidably mounted inside the back plate 6, an inclined block 88 is fixedly mounted on the convex plate 83.1, a triangular block 812 is fixedly mounted on the plug plate 89, and the hypotenuse of the inclined block 88 abuts against the triangular block 812; When the insertion rod 71 is inserted into the receiving tube 81, the insertion rod 71 will abut against the moving rod 82, and the moving rod 82 will drive the sliding plate 83 to move. At this time, the sliding plate 83 will drive the convex plate 83.1 to move, and the convex plate 83.1 will drive the inclined block 88 to abut against the triangular block 812. At this time, the triangular block 812 will be compressed and drive the insertion plate 89 to move toward the direction of the light bar 810. At this time, the insertion plate 89 will be inserted into the side rod 811 of the side wall of the light bar 810 to limit the movement of the light bar 810.

[0023] In another embodiment of the present invention: a light bar 810 is disposed inside the back plate 6, and a side bar 811 is fixedly installed on the side wall of the light bar 810, a groove is opened on the side bar 811, and a convex block adapted to the groove is fixedly installed on the plug plate 89; When the plug plate 89 moves toward the side rod 811, it will drive the protrusion to insert into the groove, thereby limiting the light bar 810 to prevent the light bar 810 from moving at will. At the same time, after the front frame 2 is disassembled, the light bar 810 is also released from the limit, which is convenient for replacement and maintenance of the light bar 810.

[0024] In another embodiment of the present invention: a coil spring 85 is fixedly installed between the rotating rod 84 and the back plate 6; When the electromagnet attracts the iron sheet, the coil spring 85 will store energy until the power is cut off, and the coil spring 85 will recover and drive the rotating rod 84 to rotate, so that the long rod 74 rotates to the tilted state and resets; When the slide bar 86 is inserted into the back plate 6, the iron sheet always remains in a horizontal state. Therefore, when the coil spring 85 drives the rotating rod 84 to return to its original position, the iron sheet will not continue to rotate downward, thereby preventing the limit block 72 and the stop hole 42 from aligning and causing the front frame 2 to be easily detached.

[0025] In another embodiment of the present invention: a slide bar 86 is vertically slidably installed inside the back plate 6, and an arc block 86.1 is fixedly installed on the surface of the slide bar 86; The slide bar 86 is L-shaped, and a magnet is fixedly installed at the bottom end of the slide bar 86. A connecting groove is opened at the bottom end of the back plate 6. When the slide bar 86 is extended into the back plate 6, the slide bar 86 abuts against the bottom end of the iron sheet. At this time, the short arm end of the slide bar 86 will also be inserted into the connecting groove and cannot continue to move up. At this time, the magnet will be adsorbed on the back plate 6, thereby preventing the slide bar 86 from slipping off, and the arc block 86.1 is used to facilitate the movement of the slide bar 86. At the same time, the elastic force of the coil spring 85 to drive the rotating rod 84 to reset is weakest after the iron sheet rotates to the horizontal position, so that the elastic force of the coil spring 85 to reset is not enough to push the magnet out of the connecting groove of the back plate 6. The magnet on the slide bar 86 makes the slide bar 86 more firmly adsorbed in the back plate 6.

[0026] In another embodiment of the present invention: a vertical bar 91 is fixedly mounted on the plug board 89, a connecting bar 92 is fixedly mounted on the vertical bar 91, a gear 93 is rotatably mounted in the back plate 6, and a tooth groove is provided on the connecting bar 92; There are two connecting bars 92 and they are symmetrically arranged around the center of the gear 93. The two connecting bars 92 can make the plug boards 89 on both sides move synchronously, so as to facilitate the positioning of the light bars 810 on both sides. The upper left corner of the front frame 2 is also provided with a plug rod 71 and other parts matching the receiving tube 81, and due to the space limitation above the display screen, the parts in the upper right corner of the display screen are adaptively adjusted for adaptation.

[0027] In another embodiment of the present invention: a telescopic bar 75 is slidably mounted on the long rod 74; A slider with a T-shaped cross section is fixedly mounted on the telescopic bar 75, and the surfaces of the long rod 74 and the telescopic bar 75 are both in contact with the display panel, and cleaning cloths are arranged on the surfaces of the long rod 74 and the telescopic bar 75, wherein the elastic fiber cloth is also connected to the telescopic bar 75. When the long rod 74 is rotated to 45 degrees with the display panel, the elastic fiber cloth is pulled out, so as to protect the display screen from dust when it is not in use. When the display screen is powered on, the electromagnet 87 will adsorb the iron sheet to rotate the rotating rod 84, and at this time the rotating rod 84 will drive the long rod 74 to be retracted upward and downward, so that the elastic fiber cloth is retracted, and as the long rod 74 rotates, the cleaning cloth thereon will also wipe the surface of the display panel to clean the position; A return spring is fixedly installed between the telescopic bar 75 and the long rod 74. When the long rod 74 rotates toward the horizontal position, the telescopic bar 75 is squeezed by the side wall of the front frame 2 and moves toward the long rod 74. At this time, the telescopic bar 75 will be stored and the return spring will be compressed. Until the long rod 74 rotates to the horizontal position, the return spring will push the telescopic bar 75 to slide out for reset.

[0028] In another embodiment of the present invention: a connecting spring is fixedly installed between the plug board 89 and the back board 6; When the insertion rod 71 is inserted into the receiving tube 81 and pushes the sliding plate 83 to move, as the inclined block 88 squeezes the insertion plate 89, the insertion plate 89 is inserted into the side rod 811, and the connecting spring will be stretched. When the insertion rod 71 is removed, the connecting spring will pull the insertion plate 89 to shrink and reset, so that the insertion plate 89 does not squeeze and limit the side rod 811. At the same time, an inner plate is installed inside the receiving tube 81 along its axial sliding direction, and the inner plate is fixedly connected to the moving rod 82, so that when the insertion rod 71 is inserted into the receiving tube 81, the insertion rod 71 can squeeze the inner plate, thereby pushing the moving rod 82 and the sliding plate 83 to move through the inner plate.

[0029] A liquid crystal display screen, comprising any one of the above-mentioned LCD liquid crystal display panels; Working principle: When the display screen needs to be installed, the backlight panel 5 is placed in the back panel 6, and then the middle frame 4 is inserted into the back panel 6, and the display panel body 3 is inserted into the front frame 2, and then the insertion rod 71 on the front frame 2 passes through the middle frame 4 through the insertion hole 41 until the insertion rod 71 is inserted into the slot. At this time, the front frame 2 will cooperate with the middle frame 4 to squeeze the display panel, and the middle frame 4 also cooperates with the back panel 6 to limit the backlight panel 5, wherein the backlight panel 5 is provided with an optical component; When installing, manually press the upper and lower long rods 74 inwards. Figure 3 and Fig. 9 , the angle of the stop hole 42 on the middle frame 4 is slightly tilted downward. When the long rod 74 is pressed to rotate the insertion rod 71 on it to the limit angle, the limit block 72 on the insertion rod 71 will be aligned with the insertion hole 41 and the slot, and then the front frame 2, display panel, middle frame 4, backlight plate 5 and back plate 6 are installed. At this time, the limit block 72 on the insertion rod 71 will be inserted into the slot without hindrance, and then the long rod 74 is released and the slide bar 86 is moved and inserted into the back plate 6. At this time, the slide bar 86 will push the iron sheet to reset. At this time, the iron sheet will drive the rotating rod 84 and the receiving tube 81 to reset. At this time, the limit block 72 rotates to a horizontal position, so that the limit block 72 and the stop hole 42 are misaligned, so that the insertion rod 71 will not be pulled out again, thereby ensuring the installation stability of the display screen; When disassembly is required, the slide bar 86 is pulled out, and then the long rod 74 is pressed inward until it cannot rotate. At this time, the long rod 74 rotates to the limit, and the limit block 72 is aligned with the stop hole 42 to facilitate the removal of the front frame 2.

[0030] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An LCD liquid crystal display panel, comprising a front frame (2), a display panel body (3), a middle frame (4), a backlight plate (5) and a back plate (6), characterized in that: An insertion rod (71) is rotatably mounted on the front frame (2), a folding plate (73) is fixedly mounted on the insertion rod (71), a long rod (74) is fixedly mounted on the folding plate (73), and an elastic fiber cloth is fixedly mounted between the long rod (74) and the inner wall of the front frame (2); A receiving cylinder (81) is rotatably mounted on the back plate (6), a moving rod (82) is slidably mounted inside the receiving cylinder (81), a sliding plate (83) is slidably mounted inside the back plate (6), a rotating rod (84) is inserted inside the sliding plate (83), and the rotating rod (84) is fixedly connected to the receiving cylinder (81); An electromagnet (87) is fixedly mounted inside the back plate (6), and an iron sheet is fixedly mounted on the rotating rod (84).

2. The LCD panel according to claim 1, characterized in that: A limit block (72) is fixedly mounted on the surface of the insertion rod (71), a plug hole (41) and a stop hole (42) connected to the plug hole (41) are provided on the surface of the middle frame (4), and a slot and a stop groove connected to the slot are provided inside the receiving tube (81).

3. The LCD panel according to claim 2, characterized in that: A convex plate (83.1) is fixedly mounted on the sliding plate (83), an inserting plate (89) is slidably mounted inside the back plate (6), an inclined block (88) is fixedly mounted on the convex plate (83.1), a triangular block (812) is fixedly mounted on the inserting plate (89), and the hypotenuse of the inclined block (88) abuts against the triangular block (812).

4. The LCD panel according to claim 3, characterized in that: A light bar (810) is arranged inside the back plate (6), and a side bar (811) is fixedly mounted on the side wall of the light bar (810), a groove is provided on the side bar (811), and a protrusion matching the groove is fixedly mounted on the plug plate (89).

5. The LCD panel according to claim 1, characterized in that: A coil spring (85) is fixedly mounted between the rotating rod (84) and the back plate (6).

6. The LCD panel according to claim 1, characterized in that: A sliding rod (86) is vertically slidably mounted inside the back plate (6), and an arc block (86.1) is fixedly mounted on the surface of the sliding rod (86).

7. The LCD panel according to claim 3, characterized in that: A vertical bar (91) is fixedly mounted on the plug plate (89), a connecting bar (92) is fixedly mounted on the vertical bar (91), a gear (93) is rotatably mounted in the back plate (6), and a tooth groove is formed on the connecting bar (92).

8. The LCD panel according to claim 1, characterized in that: A telescopic strip (75) is slidably mounted on the long rod (74).

9. The LCD display panel according to claim 3, characterized in that: A connecting spring is fixedly installed between the inserting plate (89) and the back plate (6).

10. A liquid crystal display screen, characterized in that: It comprises the LCD liquid crystal display panel described in any one of claims 1 to 9.

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