JP2017531211A - Liquid crystal display - Google Patents

Abstract

The present invention provides a liquid crystal display device. The present invention relates to a technical field of liquid crystal display, and provides a liquid crystal display device including a frame unit, a liquid crystal panel, a printed circuit board, and a chip-on film. Among them, the liquid crystal panel is fixed to one surface of the frame unit. The printed circuit board is fixed to the other surface of the frame unit. The chip-on film connects the liquid crystal panel and the printed circuit board, and the extension path of the chip-on film can be adjusted. In the liquid crystal display device of the present invention, since the extension path of the chip-on film can be adjusted, in the assembly process of the display device, the difference in the type and dimensions of the chip-on film does not affect the assembly of the entire display device, Process compatibility is greatly enhanced. [Selection] Figure 2

Description

  The present invention requires the priority of the prior application of the application number CN201415555777.2 filed on October 20, 2014, and the title of the invention "Liquid Crystal Display", and the contents of the prior application are merged in the text by the cited method. The

  The present invention relates to the technical field of liquid crystal display, and more particularly to a liquid crystal display device.

  As the spread of liquid crystal display devices has increased, the number of manufacturers of liquid crystal display panels has increased, and even for liquid crystal display panels with the same dimensions, the dimensions of the panel products of each manufacturer vary to varying degrees. This is a problem for the design of terminal display products, and it is necessary to consider how to make a compatible design that can be shared by panel products from different manufacturers.

  FIG. 1 is a diagram showing the structure of a liquid crystal display device according to the prior art. A conventional liquid crystal display device mainly includes a front housing, a rear housing, a liquid crystal backlight module, a system component, and the like. Among them, the liquid crystal backlight module mainly includes a front frame and a backlight. A component such as a unit is provided. Among them, the liquid crystal display panel has two layers of glass, gate chip on film 4 (G-COF, Gate-Chip On Film), source chip on film 3 (S-COF, Source-Chip On Film), printing It consists of components, such as a circuit board 5 (PCB, Print Circuit on Board). As shown in FIG. 1, the glass panel includes a screen display area 2 and a screen non-display area 1.

  As described above, even if the liquid crystal display panel has the same dimensions, the dimensions of the source chip-on-film 3 (S-COF, Source-Chip On Film) of the panel products of each manufacturer are different, but differ. It is necessary to consider how the subsequent backlight module is designed to be compatible.

  It is an object of the present invention to provide a liquid crystal display device that realizes adaptation to a chip-on-film having different dimensions in a production process by adopting a backlight module design that is extremely compatible.

  The present invention relates to a frame unit, a liquid crystal panel fixed to one surface of the frame unit, a printed circuit board fixed to the other surface of the frame unit, and a chip-on film connecting the liquid crystal panel and the printed circuit board. The extension path of the chip-on-film can be adjusted.

  In the liquid crystal display device of the present invention, since the extension path of the chip-on film can be adjusted, in the assembly process of the display device, the difference in the type and dimensions of the chip-on film does not affect the assembly of the entire display device, Process compatibility is greatly enhanced.

  It is preferable that the liquid crystal display device of the present invention includes at least one positioning block, and the chip-on film extends along a part of the surface of the positioning block, so that the extension path can be adjusted.

  The positioning block is preferably an elongated rod-like structure extending along the longitudinal direction.

  The cross section of the positioning block includes two side surfaces extending in parallel to each other, and first ends of the two side surfaces are connected to each other by a base that is perpendicular to the two side surfaces, The second ends of the side surfaces of the book are connected to each other by an arcuate top that projects away from the bottom.

  It is preferable that the chip-on film extends by being bonded to the two side surfaces of the positioning block and the arcuate top.

  As described above, the portion of the positioning block that is bonded to the chip-on film has a very smooth circular shape and no corners. The smooth structure of the arcuate top that affects the extension path of the chip-on-film and at the same time does not damage the chip-on-film eliminates the possibility of the chip-on film being torn or cut by a sharp pointed structure Normal operation of the display device and the service life of the product are guaranteed. On the other hand, the structure of the bottom side (the whole bottom surface when viewed three-dimensionally) is a flat structure, so it is easy to install and fix with a lean structure, and it is difficult to wobble, and the stability and durability of the entire display device product Years are guaranteed. Thus, many beneficial effects can be obtained depending on the shape, structure and position of the positioning block itself.

  Preferably, a backlight module is fixed inside the frame part, an opening is provided in the frame unit, and an arcuate top of the positioning block extends to the inside of the frame part through the opening.

  By this method, one side with the arcuate top of the positioning block can enter the internal space of the frame part from the opening on the frame part, thereby effectively utilizing the limited space in the display device, An overall lean structure is guaranteed. At the same time, a portion of the chip on film effectively adjusts its extension path as the positioning block "hides" inside the frame part.

  The positioning block is preferably fixed to the frame unit.

  Preferably, the number of positioning blocks is 1 to 3, and / or the positioning blocks and the frame parts are made of the same material. This preferred method guarantees a simplified production process and a good balance due to mechanical properties.

  One end of the chip-on film is connected to the array substrate of the liquid crystal panel, extends along the frame part, extends to a part of the surface of the positioning block, and finally the chip-on film is The other end is preferably connected to the printed circuit board. By this method, the signal from the printed circuit board is transmitted to the array substrate of the liquid crystal panel through the chip-on film, and the electric field changed by the application affects the deflection of the liquid crystal, whereby the display area of the liquid crystal display device Different screens appear at.

  The chip-on film is preferably a source chip-on film used for the array substrate. Of course, the present invention is not limited to this, and the same principle can be applied to the gate chip-on-film used for the array substrate based on the technical solution of the present invention.

  Since the liquid crystal display device of the present invention is excellent in compatibility and can be assembled in the same manner with respect to the liquid crystal display device regardless of the dimensions of the chip-on-film, the production cost can be greatly reduced. In addition, the excellent structural design of the positioning block itself can adjust the extension path of the chip-on film while preventing damage to the chip-on film, and at the same time, the positioning block itself is firmly fixed to the frame unit of the display device. The Furthermore, a lean structure of the entire product is guaranteed.

  As long as the object of the present invention is achieved, the above-described technical features can be combined with various appropriate methods, or can be replaced by technical features having equivalent effects.

Below, based on an Example and a figure, it demonstrates in more detail about this invention.
It is the figure which showed the structure of the liquid crystal display device in a prior art. It is sectional drawing of the liquid crystal display device based on this invention. It is an enlarged view of the positioning block in the liquid crystal display device based on this invention of FIG. It is sectional drawing of the liquid crystal display device in the 1st situation of contrast. It is sectional drawing of the liquid crystal display device in the 2nd situation of contrast.

  In the figure, the same symbol is used for the same component. It is assumed that the figure does not follow the actual ratio.

  Hereinafter, the present invention will be described in more detail in combination with the drawings.

  FIG. 2 is a cross-sectional view of a liquid crystal display device according to the present invention.

  In FIG. 2, the liquid crystal display device 100 according to the present invention comprises frame parts. The frame unit includes a front frame 101, a tape frame 102, and a back plate 106. As can be seen from FIG. 2, the liquid crystal panel 110 is fixed to the top surface of the frame unit, the backlight module 120 is fixed inside the frame component, and the printed circuit board 105 is fixed to the bottom surface of the frame component.

  The liquid crystal panel 110 includes an array substrate 104, a color film substrate 109, and a liquid crystal intermediate layer (not shown in the drawing) positioned between the array substrate 104 and the color film substrate 109.

  The backlight module 120 includes a light guide plate 108, a light-emitting component (not shown in the drawing) located near the light input side of the light guide plate 108, and an optical film unit 107 located on the light output surface of the light guide plate 108. Prepare. The technical proposal based on the present invention does not have any special requirements for the light input method of the backlight module in the display device, and is applied to the side light light input type backlight module and the normal incidence type backlight module. The compatibility is high. In the backlight module 120, a light beam is first output from the light emitting component, and then the light beam enters the light guide plate 108 from the light input side edge or light input surface of the light guide plate 108 and exits from the light output surface of the light guide plate 108. . Thereafter, the light beam passes through the optical film unit 107 and becomes a mist-like uniform light, so that a relatively uniform light beam is formed. The optical film unit 107 can include, for example, two mutually perpendicular prism sheets.

  As can be seen from FIG. 2, the backlight module 120 is disposed so as to be sandwiched between the tape frame 102 and the back plate 106. The liquid crystal panel 110 is disposed so as to be sandwiched between the front frame 101 and the tape frame 102, and the printed circuit board 105 is formed by other fixed parts (for example, a rear frame similar to the front frame 101) not shown in FIG. It is fixed to the outside of the back plate 106.

  The liquid crystal display device 100 further includes a chip-on film 103 that connects the liquid crystal panel 110 and the printed circuit board 105, and the extension path of the chip-on film 103 can be adjusted. In the embodiment shown in FIG. 2, the chip-on film 103 is a source chip-on film used for the array substrate 104 of the liquid crystal panel 110. Of course, the present invention is not limited to this, and the same principle can be applied to the gate chip-on-film used for the array substrate 104 based on the technical solution of the present invention.

  By this method, the source signal from the printed circuit board 105 is transmitted to the array substrate 104 of the liquid crystal panel 110 through the source chip-on film 103, and the electric field changed by the application affects the deflection of the liquid crystal, whereby the liquid crystal display device Different screens appear in the display area.

  In the liquid crystal display device 100 according to the present invention, the extending path of the chip-on film 103 can be adjusted. Thus, in the display device installation process, the chip-on film 103 having a different model number and size does not affect the installation of the entire display device. Since the process compatibility is extremely high, the chip-on film 103 can be completed by adopting the same assembly process regardless of its model number and dimensions, and other components (typically, the printed circuit board 105 is used). It is not necessary to change the installation position or processing method.

  Specifically, in the preferred embodiment, the extending path of the chip-on film 103 can be adjusted by the positioning block 111.

  Accordingly, the liquid crystal display device 100 according to the present invention further includes at least one positioning block 111, and the chip-on film 103 extends along a part of the surface of the positioning block 111, and adjusts the extending path. .

  Please refer to FIG. The positioning block 111 is an elongated rod-like structure extending along the vertical direction. Among them, the vertical direction is a direction perpendicular to the paper surface. 3 is an enlarged view of the positioning block 111 in the liquid crystal display device according to the present invention shown in FIG.

  As is clear from the enlarged view of FIG. 3, the cross section of the positioning block 111 (the cutting direction of the cross section is parallel to the plane of the paper, that is, perpendicular to the vertical direction described above) is two side surfaces extending in parallel to each other. 111.1 and 111.2, and the first ends (located on the lower side) of the two side surfaces 111.1 and 111.2 are perpendicular to the two side surfaces 111.1 and 111.2. The second ends (positioned on the upper side) of the two side surfaces 111.1 and 111.2 are connected to each other by a base 111.3 and are connected to each other by an arcuate top 111.4 projecting away from the base 111.3. Connected.

  As can be seen from FIGS. 2 and 3, the chip-on film 103 extends while being bonded to the two side surfaces 111.1 and 111.2 of the positioning block 111 and the arcuate top portion 111.4. As described above, the portion of the positioning block 111 that is bonded to the chip-on film 103 has a very smooth circular shape and no corners. The smooth structure of the arcuate top 111.4 that affects the extension path of the chip-on film 103 and at the same time does not damage the chip-on film 103, so that the chip-on film 103 is torn or cut by a sharp pointed structure. The normal operation of the display device and the useful life of the product are guaranteed. On the other hand, the structure of the bottom 111.3 (the entire bottom surface when viewed three-dimensionally) in the cross section of the positioning block 111 is a flat structure, so that it is easy to install and fix with a lean structure, and is less likely to wobble. The overall structural stability and service life of the product is guaranteed. Thus, many beneficial effects are obtained depending on the shape, structure, and position of the positioning block 111 itself.

  Refer to FIG. 2 again. With regard to the arrangement of the positioning block 111 itself, in consideration of the positional relationship, the opening 106.1 can be installed in the back plate 106 of the frame unit, and the arcuate top 111.4 of the positioning block 111 has the opening 106. 1 extends to the inside which houses the backlight module 120 inside the frame part. One side of the positioning block 111 with the arcuate top 111.4 enters the internal space of the frame part through the opening 106.1 on the back plate 106 located in the frame part, thereby confining the limited space in the display device. It can be used effectively, and the entire product structure is guaranteed. At the same time, a portion of the chip-on film 103 effectively adjusts its extension path as the positioning block 111 “hides” together inside the frame part.

  The positioning block 111 is fixed to the back plate 106 of the frame part, for example, at the bottom 111.3. Of course, the positioning block 111 can be secured to the back plate 106 of the frame component in other forms or in other locations.

  By using the same material for the positioning block 111 and the frame component (for example, the back plate 106), the production process is simplified and the balance in mechanical properties is maintained.

  As a matter of course, the arrangement form of the positioning block 111 described above is only one of the similar arrangement methods. There are many other ways to do this, but here I will not make any more luxury.

  The number of positioning blocks 111 is preferably 1 to 3. There are many options for the number, size, and shape of the positioning blocks 111, and a required extension path of the chip-on-film 103 can be determined based on a specific situation.

  Therefore, the liquid crystal display device 100 according to the present invention is seen as a whole. One end of the chip-on film 103 is connected to the array substrate 104 of the liquid crystal panel 110 and extends along the frame components (for example, extends along the outside of the tape frame 102), and a part of the surface of the positioning block 111 It extends to (two side surfaces 111.1 and 111.2, and an arcuate top 111.4), and finally the chip-on film 103 is connected to the printed circuit board 105 at the other end.

  By this method, the normal function of the chip-on film 103 is ensured, and the electric signal from the printed circuit board 105 is transmitted to the array substrate 104 of the liquid crystal panel 110, and the liquid crystal deflection is controlled by the change of the electric field. The required display screen appears. On the other hand, by installing the positioning block 111, the extension path of the chip-on film 103 can be adjusted, and in the same installation terminal process, chip-on film 103 of different dimensions and model numbers can be adopted. The compatibility of the manufacturing method of the entire display device is enhanced, and the production cost is effectively suppressed.

  In order to show the advantages of the liquid crystal display device 100 according to the present invention, a proportional liquid crystal display device 200 designed as follows is provided.

  FIG. 4 is a cross-sectional view of the liquid crystal display device in the first proportional situation. In FIG. 4, the comparative liquid crystal display device 200 includes a frame component. The frame unit includes a front frame 201, a tape frame 202, and a back plate 206. As can be seen from FIG. 4, the liquid crystal panel 210 is fixed to the upper surface of the frame unit, the backlight module 220 is fixed to the inside of the frame component, and the printed circuit board 205 is fixed to the bottom surface of the frame component. Compared with the liquid crystal display device 100 shown in FIG. 2, in the comparative liquid crystal display device 200, the back plate 206 of the frame unit extends continuously to the side of the backlight module 220, and an opening is formed therebetween. There is no.

  The liquid crystal panel 210 includes an array substrate 204, a color film substrate 209, and a liquid crystal intermediate layer (not shown in the figure) located between the array substrate 204 and the color film substrate 209.

  The backlight module 220 includes a light guide plate 208, a light emitting component (not shown in the drawing) located near the light input side of the light guide plate 208, and an optical film unit 207 located on the light output surface of the light guide plate 208. Prepare. In the backlight module 220, a light beam is first output from the light emitting component, and then the light beam enters the light guide plate 208 from the light input side or the light input surface of the light guide plate 208 and exits from the light output surface of the light guide plate 208. Thereafter, the light beam passes through the optical film unit 207 and becomes mist-like uniform light, so that a relatively uniform light beam is formed.

  As can be seen from FIG. 4, the backlight module 220 is disposed so as to be sandwiched between the tape frame 202 and the back plate 206 extending continuously. The liquid crystal panel 210 is disposed so as to be sandwiched between the front frame 201 and the tape frame 202, and the printed circuit board 205 is formed by other fixed parts (for example, a rear frame similar to the front frame 201) not shown in FIG. Fixed to the outside of the back plate 206.

  The liquid crystal display device 200 further includes a chip-on film 203 that connects the liquid crystal panel 210 and the printed circuit board 205, and the extending path of the chip-on film 203 is along a fixed direction. In the comparison shown in FIG. 4, the chip-on film 203 is a source chip-on film used for the array substrate 204. In this way, the source signal from the printed circuit board 205 is transmitted to the array substrate 204 of the liquid crystal panel 210 through the source chip-on film 203, and the electric field changed by the application affects the deflection of the liquid crystal, thereby causing the display device 200. Different screens appear in the display area.

  As can be seen by comparing the two, in order to adjust the extension path of the chip-on film without providing a positioning block, the tip-on film is bent and extended only along the fixed extension path. Exists. One end of the chip-on-film 203 is connected to the array substrate 204 of the liquid crystal panel 210, extends along the frame components (for example, extends along the surface of the tape frame 202), and is connected to the printed circuit board 205 at the other end. Is done.

  Therefore, in the proportional liquid crystal display device 200, the positional relationship between the printed circuit board 205 and the liquid crystal panel 210 is limited by the dimensions of the chip-on film 203. FIG. 5 shows a comparative liquid crystal display device 200 under another situation. As can be seen, in FIG. 5, the chip-on film 203 ′ larger than the size of the chip-on film 203 in FIG. Therefore, in order to provide a sufficient mounting space for the chip-on film 203 ′, it is necessary to move the printed circuit board 205 correspondingly to the right side. This is very disadvantageous in the same production process, very low compatibility, and chip-on-film with different dimensions requires a specially tuned and designed liquid crystal display installation process. is there.

  Obviously, the liquid crystal display device according to the present invention has a high advantage over the comparative liquid crystal display device. First, the liquid crystal display device according to the present invention is excellent in compatibility, and can be assembled in the same manner with respect to the liquid crystal display device regardless of the dimensions of the chip-on film, so that the production cost can be greatly reduced. In addition, the excellent structural design of the positioning block itself can adjust the extension path of the chip-on film while preventing damage to the chip-on film, and at the same time, the positioning block itself is firmly fixed to the frame unit of the display device. The Furthermore, a lean structure of the entire product of the positioning block is guaranteed. In addition, the one side of the positioning block having the arcuate top enters the internal space of the frame part through the opening on the back plate of the frame part, so that the limited space in the display device can be used effectively, and the entire product is wasted. No structure is guaranteed.

  Although the present invention has been described with reference to the preferred embodiments, various improvements can be made without departing from the scope of the present invention, and some parts can be replaced with equivalent parts. . In particular, as long as there is no structural contradiction, all the technical solutions pointed out in the embodiments can be combined in any manner. The present invention is not limited by the specific embodiments herein, but includes all technical solutions that fall within the scope of the claims.

1 Screen non-display area 2 Screen display area 3 Source chip on film 4 Gate chip on film 5 Printed circuit board 100 Liquid crystal display device 101 Front frame 102 Tape frame 103 Chip on film 104 Array substrate 105 Printed circuit board 106 Back plate 106.1 Opening 107 Optical film unit 108 Light guide plate 109 Color film substrate 110 Liquid crystal panel 111 Positioning block 111.1 Side surface 1111.2 Side surface 111.3 Base 111.4 Arc top 120 Backlight module 200 Liquid crystal display device 201 Front frame 202 Tape frame 203 Chip-on-film 204 Array substrate 205 Printed circuit board 206 Back plate 207 Optical film unit 208 Light guide plate 209 Color film substrate 210 Liquid crystal panel 220 Backlight module

Claims (15)

A liquid crystal display device comprising a frame unit, a liquid crystal panel, a printed circuit board, and a chip on film,
The liquid crystal panel is fixed to one surface of the frame unit,
The printed circuit board is fixed to the other surface of the frame unit;
The chip-on film connects the liquid crystal panel and the printed circuit board, and the extension path of the chip-on film can be adjusted.   The liquid crystal according to claim 1, further comprising: at least one positioning block, wherein the chip-on film adjusts an extending path by extending along a part of a surface of the positioning block. Display device.   The liquid crystal display device according to claim 2, wherein the positioning block has an elongated bar-like structure extending along a vertical direction.   The cross section of the positioning block includes two side surfaces extending in parallel to each other, and first ends of the two side surfaces are connected to each other by a base that is perpendicular to the two side surfaces, The liquid crystal display device according to claim 3, wherein the second end portions of the side surfaces of the books are connected to each other by an arcuate top portion that projects away from the bottom side.   5. The liquid crystal display device according to claim 4, wherein the chip-on film extends by being bonded to two side surfaces of the positioning block and an arcuate top portion. A backlight module is fixed inside the frame component,
6. The liquid crystal display device according to claim 5, wherein an opening is provided in the frame part, and an arcuate top of the positioning block extends to the inside of the frame part through the opening.   The liquid crystal display device according to claim 2, wherein the positioning block is fixed to the frame unit.   The liquid crystal display device according to claim 2, wherein the number of the positioning blocks is 1 to 3, and / or the positioning blocks and the frame parts are made of the same material.   One end of the chip-on film is connected to the array substrate of the liquid crystal panel, extends along the frame part, extends to a part of the surface of the positioning block, and finally the chip-on film is the other The liquid crystal display device according to claim 2, wherein the liquid crystal display device is connected to the printed circuit board at an end.   The liquid crystal display device according to claim 1, wherein the chip-on film is a source chip-on film used for the array substrate.   The liquid crystal display device according to claim 2, wherein the chip-on film is a source chip-on film used for the array substrate.   The liquid crystal display device according to claim 3, wherein the chip-on film is a source chip-on film used for the array substrate.   The liquid crystal display device according to claim 4, wherein the chip-on film is a source chip-on film used for the array substrate.   The liquid crystal display device according to claim 5, wherein the chip-on film is a source chip-on film used for the array substrate.   The liquid crystal display device according to claim 6, wherein the chip-on film is a source chip-on film used for the array substrate.