RU2653768C1 - Liquid crystalline display - Google Patents

Abstract

FIELD: physics.

SUBSTANCE: invention relates to the technology of liquid crystal displays. Liquid crystal display comprising: frame component; liquid crystal panel attached to one side of the frame component; printed circuit board attached to the other side of the frame component; and a chip on the tape medium connecting the liquid crystal panel and the printed circuit board to each other, the chip on the tape carrier having an elongated track that is adjustable.

EFFECT: technical result is simplified manufacture of the display.

15 cl, 5 dwg

Description

CROSS REFERENCE TO RELATED APPLICATIONS

[0001] The application for the present invention claims priority on the basis of Chinese patent application CN 201410557577.2 entitled "Liquid Crystal Display", filed October 20, 2014, which is given in full in the description of the present application by reference.

FIELD OF THE INVENTION

[0002] The present invention relates to the technical field of liquid crystal display technology, in particular to a liquid crystal display.

BACKGROUND OF THE INVENTION

[0003] With the increasing popularity of liquid crystal displays, the number of manufacturers involved in the production of liquid crystal display panels is increasing, and therefore, for this specification of liquid crystal panels, size differences inevitably arise among panels made by different panel manufacturers. This leads to problems in the design of displays, which are the final product, since it must be taken into account that a design compatible with and applied to panels of different manufacturers should be proposed.

[0004] FIG. 1 is a schematic diagram illustrating a structure of a prior art liquid crystal display. The main components of the known liquid crystal display include a front wall of the housing, a rear wall of the housing, a backlight module of the liquid crystal element and system components of the device, among which a backlight module of the liquid crystal element includes main parts that include structural components such as a front frame and a backlight unit. The liquid crystal display panel contains elements comprising two layers of glass, a gate chip on a tape medium (G-COF), a source chip on a tape medium (S-COF) and a printed circuit board (PCB) 5. The glass panel has a display area 2 and an area non-display 1, as shown in FIG. one.

[0005] As mentioned above, even for liquid crystal panels of the same specification, source-chips on a tape carrier of panels made by different manufacturers may exhibit larger or smaller size differences. This makes it necessary to take into account the compatibility of sizes in subsequent designs of backlight modules.

SUMMARY OF THE INVENTION

[0006] The present invention provides a liquid crystal display that adapts the design of the backlight module, which shows extremely high compatibility, to accommodate the chip on tape media of various sizes during production.

[0007] The present invention provides a liquid crystal display that comprises: a frame; a liquid crystal panel attached to one side of the frame; a circuit board attached to the other side of the frame; and a tape chip connecting the liquid crystal panel and the printed circuit board to each other, wherein the tape chip has an elongated track that is adjustable.

[0008] In the liquid crystal display device according to the present invention, the elongated track of the tape chip is adjustable, and this ensures that during the display assembly process, the entire display assembly process is independent of the different models and sizes of the tape chip, so that the technological compatibility is very high .

[0009] Preferably, the liquid crystal display in accordance with the present invention further comprises at least one positioning unit, and a tape chip runs along a portion of the outer surface of the positioning unit to allow for adjustment of the elongated track.

[00010] Preferably, the positioning unit comprises an elongated strip-like structure extending in the longitudinal direction.

[00011] Preferably, the positioning unit has a cross section that contains two side edges that are substantially parallel to each other. Both side edges have first ends that are connected to each other through a lower edge that is perpendicular to the two side edges. The two side edges have second ends that are connected to each other through an upper curve protruding in the direction from the lower edge.

[00012] Preferably, the tape chip extends, to some extent in contact with them, along two side edges and an upper curve of the positioning unit.

[00013] Thus, on the one hand, the parts of the positioning unit with which the chip on the tape is in contact are all smooth and rounded without any sharp angle to prevent damage to the chip on the tape when exposed to the elongated track of the chip on the tape media where the smoothness and roundedness of the upper curve prevents any potential risk that the chip on the tape can be broken or cut with a sharp structure, thereby ensuring normal display operation and service life products; on the other hand, the lower edge (or the entire lower surface in a three-dimensional projection) is made in the form of a planar planar structure in order to facilitate the installation and fixing of the structure in a compact way without easy movement, thereby ensuring structural stability and the service life of the entire display. Thus, the shape, structure and position of the positioning unit itself provide various advantages.

[00014] Preferably, the frame component has an interior space in which a backlight unit is installed; the frame component is provided with an opening formed therein, and the upper curve of the positioning block passes through the hole into the interior of the frame component.

[00015] Thus, the end of the positioning unit, which contains the upper curve, is allowed to pass through the opening of the frame component to enter the interior of the frame component. This allows you to effectively use the limited space inside the display and provides structural compactness of the entire product. In addition, the chip on the tape carrier is “hidden” together with the positioning unit inside the frame component to effectively adjust its elongated track.

[00016] Preferably, the positioning unit is attached to the frame component.

[00017] Preferably, the number of positioning blocks used is from 1 to 3, and / or the positioning block and the frame component are made of the same material. This preferred solution provides a simplified manufacturing process and a balance of mechanical properties.

[00018] Preferably, the tape chip is connected at one end to a matrix substrate of the liquid crystal panel and extends along a frame component to extend over a portion of the outer surface of the positioning unit, and the tape chip is finally connected at its opposite end to the printed circuit board. Thus, the electrical signal from the printed circuit board can be transmitted to the substrate of the matrix of the liquid crystal panel to control the rotation of the liquid crystal by changing the electric field to display various images in the display area of the display.

[00019] Preferably, the tape chip is a tape source chip for use in a matrix substrate. This, of course, is not limited, and it is easy to understand that in a similar way the technical solution of the present invention is also applicable to the gate-on-tape media used in the matrix substrate.

[00020] The liquid crystal display in accordance with the present invention has excellent computability and generally does not depend on the size of the corresponding chip on the tape medium, to enable unified mounting for liquid crystal displays, thereby significantly reducing manufacturing costs. In addition, the innovative design of the positioning unit allows you to adjust the elongated track of the chip on the tape without causing damage or rupture of the chip on the tape, and can also ensure that the positioning block itself can be firmly fixed to the display frame component. In addition, structural compactness of the entire product can be achieved.

[00021] The specifications described above can be combined in all kinds of appropriate ways or can be replaced by equivalent characteristics if the objectives of the present invention can be achieved.

BRIEF DESCRIPTION OF THE DRAWINGS

[00022] The present invention will be described in more detail based on a variant of its implementation with reference to the accompanying drawings, in which:

[00023] FIG. 1 is a schematic view showing a structure of a prior art liquid crystal display;

[00024] FIG. 2 is a cross-sectional view showing a liquid crystal display in accordance with the present invention;

[00025] FIG. 3 is an enlarged view of a positioning unit of a liquid crystal display device in accordance with the present invention shown in FIG. 2;

[00026] FIG. 4 is a cross section showing a liquid crystal display of a comparative example in a first state; as well as

[00027] FIG. 5 is a cross-sectional view showing a liquid crystal display of a comparative example in a second state.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[00028] The following illustration of the present invention will be given below with reference to the accompanying drawings.

[00029] FIG. 2 is a cross-sectional view showing a liquid crystal display in accordance with the present invention.

[00030] FIG. 2, a liquid crystal display device 100 in accordance with the present invention comprises a frame component. The frame component comprises a front frame 101 forming a frame 102 and a backplane 106. As shown in FIG. 2, a liquid crystal panel 110 is fixed to an upper surface of a frame component; a backlight module 120 is fixed to the inside of the frame component; and the printed circuit board 105 is fixed to the bottom surface of the frame component.

[00031] The liquid crystal software panel comprises a matrix substrate 104, a color filter substrate 109, and a liquid crystal layer (not shown in the drawings) located between the matrix substrate 104 and the color filter substrate 109.

[00032] The backlight module 120 includes a light guide panel 108, a light emitting element (not shown in the drawings) located adjacent to the side on which light is incident, the light guide panel 108, and an optical film unit 107 located on the light exit surface of the light guide panel 108 It is easy to understand that the technical solution in accordance with the present invention does not require a special light-entering mode for the backlight module of the display, and is applicable to a backlight module such as a side edge and a backlight module Direct-type fabrics, and therefore have excellent compatibility. In the backlight module 120, light is first emitted from the light emitting element, and then light enters the light guide panel 108 through the edge of the side on which light is incident, or the surface on which light is incident, the light guide panel 108 and is projected outside the light exit surface of the light guide panel 108. After that, light passes through the optical film unit 107 for diffusion and homogenization to form uniform illumination. The optical film unit 107 may, for example, comprise two mutually perpendicular prismatic plates.

[00033] FIG. 2, a backlight module 120 is inserted between the forming frame 102 and the backplane 106. A liquid crystal panel 110 is inserted between the front frame 101 and the forming frame 102, and the circuit board 105 is secured with other fasteners (for example, such as a back frame similar to the front frame 101), which are not shown in FIG. 2, on the outside of the backplane 106.

[00034] The liquid crystal display 100 further comprises a chip on a tape medium 103 that connects the liquid crystal panel 110 and a printed circuit board 105, the chip on a tape medium 103 having an elongated track that is adjustable. In the embodiment shown in FIG. 2, the tape chip 103 is a tape source chip used in the substrate of the matrix 104 of the liquid crystal panel 110. This, of course, is not limiting, and it can be easily understood that the technical solution of the present invention is also applicable to the gate chip on tape used in the substrate of the matrix 104.

[00035] Thus, the source signal coming from the printed circuit board 105 is transmitted through the source chip on the tape medium 103 to the substrate of the matrix 104 of the liquid crystal panel 110, in order to influence the rotation of the liquid crystal by applying an alternating electric field to it, so as to display various images in the display area.

[00036] On the liquid crystal display device 100 in accordance with the present invention, the elongated track of the chip on the tape medium 103 is adjustable, and this ensures that the assembly of the entire display will not be affected by the different models and sizes of the chip on the tape medium 103 during the display assembly process. Thus, technological compatibility is high, and all models and sizes of the chip on the tape medium 103 can be applied to a unified assembly process without the need to change the assembly location and the processing method of other parts (usually, such as a printed circuit board 105).

[00037] In particular, in a preferred embodiment of the invention, the adjustment of the elongated track of the chip on the tape medium 103 is performed using the positioning unit 111.

[00038] Thus, the liquid crystal display device 100 in accordance with the present invention also comprises at least one positioning unit 111, and the chip on the tape medium 103 is configured to extend along part of the outer surface of the positioning unit 111 to adjust the elongated track.

[00039] With reference to FIG. 2, the positioning unit 111 comprises an elongated strip-like structure extending in the longitudinal direction. Here, the longitudinal direction is a direction that is perpendicular to the surface of the paper sheet. In FIG. 3 is an enlarged view of the positioning unit 111 of the liquid crystal display in accordance with the present invention shown in FIG. 2.

[00040] In an enlarged view of FIG. 3 clearly shows that the cross section of the positioning block 111 (where the cross section is taken in a direction that is essentially parallel to the surface of the paper sheet, namely perpendicular to the longitudinal direction) contains two side edges 111.1 and 111.2, which are essentially parallel to each other . The two lateral edges 111.1 and 111.2 have first ends (located on the lower side) that are connected to each other through the lower edge 111.3, which is perpendicular to the two lateral edges 111.1 and 111.2; and the two side edges 111.1 and 111.2 have second ends (located on the upper side) that are connected to each other through the upper curve 111.4, protruding in the direction from the lower edge 111.3.

[00041] FIG. 2 and 3 it can be seen that the chip on the tape medium 103 extends, to some extent in contact with them, along the two side edges 111.1 and 111.2 and the upper curve 111.4 of the positioning block 111. Thus, on the one hand, there are parts of the positioning block 111 with which the chip on the tape 103 is in contact, they are all smooth and rounded without any sharp angle to prevent damage to the chip on the tape 103 when the elongated track of the chip on the tape 103 is damaged, where the smoothness and roundedness of the upper curve 111.4 prevent aschaet any potential risk that the chip on a tape carrier 103 can be broken or cut with a sharp structure, thereby ensuring normal operation of the display and the life of the product; on the other hand, the lower edge 111.3 of the cross-section of the positioning block 111 (or the entire lower surface in three-dimensional projection) is made in the form of a planar planar structure to facilitate installation and fixing of the structure in a compact way without easy movement, thereby ensuring structural stability and the service life of the entire display . Thus, the shape, structure and position of the positioning unit 111 itself provide various advantages.

[00042] With reference again to FIG. 2 relative to the positioning of the positioning block 111, taking into account the relative position, a hole 106.1 may be formed in the backplane 106 of the frame component so that the upper curve 111.4 of the positioning block 111 can pass through the hole 106.1 into the interior of the frame component that accommodates the backlight module 120 The end of the positioning block 111, which contains the upper curve 111.4, passes through the hole 106.1 formed in the backplane 106 of the frame component to enter the inner ie space frame component. This allows you to effectively use the limited space inside the display and provides structural compactness of the entire product. In addition, the chip on the tape medium 103 is “hidden” together with the positioning unit 111 inside the frame component to effectively adjust its elongated track.

[00043] On the other hand, the positioning unit 111 can be attached, for example, with its lower edge 111.3 to the backplane 106 of the frame component. Of course, the positioning unit 111 may be mounted to the frame component backplane 106 in other ways or at other places.

[00044] The positioning unit 111 may be made of the same material as the frame component (such as the backplane 106) to simplify the manufacturing process and balance the mechanical properties.

[00045] Of course, the above-described arrangement of the positioning unit 111 is only one of many possible arrangements. There are other ways to achieve this result, and an excessive description is not given here.

[00046] Preferably, the number of positioning blocks 111 used is from 1 to 3. The number, size and shape of the positioning block 111 can have many options and can be determined according to the need for the actual state of the elongated track on the chip on the tape medium 103.

[00047] Thus, the liquid crystal display device 100 in accordance with the present invention, as a whole, would be such that the chip on the tape medium 103 is connected at one end thereof to the substrate of the matrix 104 of the liquid crystal panel 110 and extends along a frame component (such as a passage along the outer side of the forming frame 102), to then pass over part of the outer surface of the positioning block 111 (two side edges 111.1 and 111.2 and the upper curve 111.4), and finally, the chip on the tape carrier 103 is connected by its opposite ozhnym end of the printed circuit board 105.

[00048] Thus, the normal functionality of the chip on the tape medium 103 is maintained, and the electrical signal from the printed circuit board 105 can be transmitted to the substrate of the matrix 104 of the liquid crystal panel 110 to control the rotation of the liquid crystal by changing the electric field to display the desired image. On the other hand, the arrangement of the positioning unit 111 allows you to adjust the elongated track on the chip on the tape medium 103, so that different sizes and models of the chip on the tape medium 103 can be adapted in a unified assembly process, which greatly improves the compatibility of the entire production solution of the display and effectively reduces the cost production.

[00049] To demonstrate the advantages of the liquid crystal display 100 in accordance with the present invention, the liquid crystal display 200 is shown below as a designed comparative example.

[00050] FIG. 4 is a cross-sectional view showing a liquid crystal display of a comparative example in a first state. In FIG. 4, a comparative example liquid crystal display 200 comprises a frame component. The frame component comprises a front frame 201 forming a frame 202 and a backplane 206. In FIG. Figure 4 shows that the liquid crystal panel 210 is attached to the upper surface of the frame component; a backlight module 220 is fixed to the inside of the frame component; and the printed circuit board 205 is attached to the bottom surface of the frame component. Comparison with the liquid crystal display 100 in FIG. 2 shows that in the liquid crystal display 200 of the comparative example, the frame component backplane 206 continuously extends along one side of the backlight unit 220 and no opening is formed therein.

[00051] The liquid crystal panel 210 comprises a matrix substrate 204, a color filter substrate 209, and a liquid crystal layer (not shown in the drawings) located between the matrix substrate 204 and the color filter substrate 209.

[00052] The backlight module 220 includes a light guide panel 208, a light emitting element (not shown in the drawings) located adjacent to the side on which light is incident, or a surface on which light is incident, the light guide panel 208, and an optical film unit 207, located on the light exit surface of the light guide panel 208. In the backlight module 220, light is first emitted from the light emitting element, and then light enters the light guide panel 208 through the side on which the light falls, or the surface on which it falls from The light guide, the light guide panel 208, is projected beyond the light exit surface of the light guide panel 208. After that, the light passes through the optical film unit 207 for diffusion and homogenization to form uniform illumination.

[00053] FIG. 4, it can be seen that the backlight module 220 is inserted between the forming frame 202 and the backplane 206, solid and continuous. A liquid crystal panel 210 is inserted between the front frame 201 and the forming frame 202, and the circuit board 205 is secured with other fasteners (such as, for example, a rear frame similar to the front frame 201), which are not shown in FIG. 4, on the outside of the backplane 206.

[00054] The liquid crystal display 200 further comprises a chip on a tape medium 203 that connects the liquid crystal panel 210 and a printed circuit board 205, the chip on the tape medium 203 having an elongated track that is in a fixed direction. In the comparative example shown in FIG. 4, the chip on the tape medium 203 is a source chip on the tape medium used in the substrate of the matrix 204. Thus, the source signal coming from the printed circuit board 205 is transmitted through the source chip on the tape medium 203 to the substrate of the matrix 204 of the liquid crystal panel 210, in order to influence the rotation of the liquid crystal by applying an alternating electric field to it, so as to display various images in the display area.

[00055] From the comparison, it can be concluded that due to the lack of a positioning unit for adjusting the elongated track of the chip on the tape carrier, the chip on the tape carrier can only be curved and elongated along a fixed path. The chip on the tape medium 203 is connected at one end to the substrate of the matrix 204 of the liquid crystal panel 210, then passes along a component of the frame (such as a passage along the outside of the forming frame 202) and then connected at its opposite end to the printed circuit board 205.

[00056] Thus, in the liquid crystal display 200 of the comparative example, the relative position of the printed circuit board 205 and the liquid crystal panel 210 with respect to each other is subject to restrictions imposed by the size of the chip on the tape medium 203. FIG. 5 shows a liquid crystal display 200 of a comparative example in a different state. It can be seen that in FIG. 5 contains a chip on a tape medium 203 'having a size that is much larger than the size of a chip on a tape medium 203 in FIG. 4, and thus in FIG. 5, extending the chip on the tape media would take up more space, and the circuit board 205 should be shifted to the right to provide the space needed to install the chip on the tape 203 '. This negatively affects the unification of production processes and shows poor compatibility, so for various sizes of chip on a tape carrier during the assembly of the liquid crystal display, a special test must be carried out and a special design must be taken.

[00057] It can be seen that, compared with the liquid crystal display of the comparative example, the liquid crystal display in accordance with the present invention shows significant advantages. Firstly, the liquid crystal display in accordance with the present invention has excellent compatibility and, as a rule, is independent of the size of the tape chip used to provide a uniform assembly for the liquid crystal displays, thereby significantly reducing manufacturing costs. In addition, the innovative design of the positioning unit allows you to adjust the elongated track of the chip on the tape without causing damage or rupture of the chip on the tape, and can also ensure that the positioning block itself can be firmly fixed to the display frame component. In addition, the end of the positioning block, which contains the upper curve, is allowed to pass through an opening formed in the backplane of the frame component to enter the interior of the frame component. This allows you to effectively use the limited space inside the display and provides structural compactness of the entire product.

[00058] Although a description of the present invention has been given with reference to its preferred embodiment, it is contemplated that various modifications are available without departing from the scope of the present invention and components / parts may be replaced by their equivalents. In particular, provided that there can be no structural conflict, each disclosed feature associated with each embodiment may be combined arbitrarily. The present invention is not limited to the specific example given in the description, and should be interpreted, including all technical solutions that fall within the scope defined by the attached claims.

Claims (19)

1. A liquid crystal display comprising: frame component; a liquid crystal panel attached to one side of the frame component; a circuit board attached to the other side of the frame component; and a tape chip connecting the liquid crystal panel and the printed circuit board with each other, the tape chip having an elongated track that is adjustable. 2. The liquid crystal display of claim 1, further comprising at least one positioning unit, a tape chip extending along a portion of the outer surface of the positioning unit to allow for adjustment of the elongated track. 3. The liquid crystal display according to claim 2, characterized in that the positioning unit comprises an elongated strip-like structure extending in the longitudinal direction. 4. The liquid crystal display according to claim 3, characterized in that the positioning unit has a cross section that contains two side edges that are essentially parallel to each other, two side edges having first ends that are connected to each other through a lower edge, which perpendicular to two side edges, the two side edges having second ends that are connected to each other through an upper curve protruding in the direction from the lower edge. 5. The liquid crystal display according to claim 4, characterized in that the chip on the tape medium passes essentially in contact with it along two side edges and the upper curve of the positioning unit. 6. The liquid crystal display according to claim 5, characterized in that the frame component has an internal space in which the backlight module is mounted, the frame component is provided with an opening formed therein, and the upper curve of the positioning unit passes through the hole into the internal space of the frame component. 7. The liquid crystal display according to claim 2, characterized in that the positioning unit is attached to the frame component. 8. The liquid crystal display according to claim 2, characterized in that the number of positioning units used is from 1 to 3 and the positioning unit and the frame component are made of the same material. 9. The liquid crystal display according to claim 2, characterized in that the tape-supported chip is connected at one end to a matrix substrate of the liquid crystal panel and extends along a frame component to extend over a portion of the outer surface of the positioning unit, and the tape-supported chip is connected at its opposite end with circuit board. 10. The liquid crystal display according to claim 1, characterized in that the tape chip is a tape source chip for use in a matrix substrate. 11. The liquid crystal display according to claim 2, characterized in that the tape chip is a tape source chip for use in a matrix substrate. 12. The liquid crystal display of claim 3, wherein the tape chip is a tape source chip for use in a matrix substrate. 13. The liquid crystal display according to claim 4, wherein the tape chip is a tape source chip for use in a matrix substrate. 14. The liquid crystal display according to claim 5, characterized in that the tape chip is a tape source chip for use in a matrix substrate. 15. The liquid crystal display according to claim 6, characterized in that the tape chip is a tape source chip for use in a matrix substrate.

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