Liquid crystal display capable of increasing liquid crystal response speed at low temperature

Abstract

The utility model discloses a liquid crystal display screen capable of improving liquid crystal response speed at low temperature, which comprises a lower polaroid, a lower substrate, an upper substrate, an upper polaroid and a cover plate which are sequentially overlapped from bottom to top, and the lower substrate is longer than the upper substrate and extends outwards to form a step. A step is arranged on the upper surface of the lower substrate, a driving IC and a TFT FPC are bound on the upper surface of the lower substrate at the step, an ITO heating pattern layer is arranged on the lower surface of the lower substrate, the ITO heating pattern layer comprises at least two ITO heating wiring loops which are arranged in parallel, a heating FPC is bound on the lower surface of the lower substrate at the step, and the ITO heating wiring loops are arranged in parallel. The heating FPC is respectively and electrically connected with the TFT FPC and the ITO heating pattern layer, and each ITO heating wiring loop can be respectively and independently controlled. Even if one ITO heating wiring loop is broken, the ITO heating wiring loop can still work normally, the effect of reducing power consumption can be achieved, continuous starting and stopping are not needed, and the ITO heating wiring loop is prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid crystal display, and more specifically to a liquid crystal display screen capable of improving the response speed of liquid crystal at low temperatures. Background Art

[0002] When a traditional LCD screen is in a low temperature condition, the response time of the LCD screen will be affected by the low temperature, resulting in the display screen being stuck and not smooth. Some LCD screens will install a heating module on the LCD screen. When the temperature is low, the heating module is enabled to heat the LCD screen, so that the liquid crystal is in a working state, avoiding the display screen being stuck and not smooth due to the influence of low temperature. However, this structure can only start working at full power when the temperature is low. After starting for a period of time, the heating module can only be turned off due to the increase in temperature to avoid the temperature being too high and affecting the operation of the LCD screen; and when one of the circuits in the heating module is abnormal, the entire heating module will not work properly at all. Utility Model Content

[0003] The technical problem to be solved by the utility model is how to improve the response speed of a liquid crystal display screen at low temperatures.

[0004] The technical problem to be solved by the utility model is achieved through the following technical solutions:

[0005] In order to solve the above technical problems, the utility model provides a liquid crystal display screen for improving the response speed of liquid crystal at low temperatures, which includes a lower polarizer, a lower substrate, an upper substrate, an upper polarizer and a cover plate which are stacked in sequence from bottom to top, the lower substrate is longer than the upper substrate and extends outward to form a step, the upper surface of the lower substrate located at the step is bound with a driver IC and a TFT FPC, the lower surface of the lower substrate is provided with an ITO heating pattern layer, the ITO heating pattern layer includes at least two ITO heating wiring loops arranged in parallel, the lower surface of the lower substrate located at the step is bound with a heating FPC, the heating FPC is electrically connected to the TFT FPC and the ITO heating pattern layer, respectively, and each of the ITO heating wiring loops can be controlled separately.

[0006] As a preferred implementation of the liquid crystal display screen for improving the response speed of liquid crystal at low temperatures provided by the utility model, there are 4 ITO heating wiring loops in total.

[0007] As a preferred embodiment of the liquid crystal display screen for improving the liquid crystal response speed at low temperatures provided by the utility model, the heating FPC includes a substrate layer, a circuit layer arranged on the upper surface of the substrate layer, and a metal heat dissipation layer arranged on the lower surface of the substrate layer.

[0008] As a preferred embodiment of the liquid crystal display screen for improving the response speed of liquid crystal at low temperatures provided by the utility model, the heating FPC also includes at least one through-hole penetrating the substrate layer, the circuit layer and the metal heat dissipation layer, and the inner wall of the through-hole is provided with a thermal conductive layer in contact with the circuit layer and the metal heat dissipation layer.

[0009] As a preferred implementation of the liquid crystal display screen for improving the response speed of liquid crystal at low temperatures provided by the utility model, a heat conductor connected to an external heat conductive structure is arranged in the perforation, and the heat conductor is in contact with the heat conductive layer.

[0010] As a preferred implementation of the liquid crystal display screen for improving the response speed of liquid crystal at low temperatures provided by the utility model, the structure of the metal heat dissipation layer is a mesh structure, a strip structure, a wavy structure or a honeycomb structure.

[0011] As a preferred embodiment of the liquid crystal display screen for improving the response speed of liquid crystal at low temperatures provided by the utility model, a plurality of grooves are formed on the upper surface of the cover plate by etching, and a plastic layer is covered on the upper side of the cover plate, and the plastic layer is embedded in the plurality of the grooves.

[0012] As a preferred implementation of the liquid crystal display screen for improving the response speed of liquid crystal at low temperatures provided by the utility model, the groove is a closing groove that is narrow on the outside and wide on the inside.

[0013] As a preferred implementation of the liquid crystal display screen for improving the response speed of liquid crystal at low temperatures provided by the utility model, the groove is in the shape of a long strip.

[0014] As a preferred implementation of the liquid crystal display screen for improving the response speed of liquid crystal at low temperatures provided by the utility model, the inner surface of the groove is provided with a surface treatment layer for improving the surface roughness.

[0015] The utility model has the following beneficial effects:

[0016] Since an ITO heating pattern layer is provided on the lower surface of the lower substrate, the ITO heating pattern layer includes at least two ITO heating wiring loops arranged in parallel, each ITO heating wiring loop can be controlled separately, and can still work normally even if one ITO heating wiring loop is broken. At the same time, only the heating function of some of the ITO heating wiring loops can be turned on according to the external ambient temperature requirements, thereby reducing power consumption and eliminating the need for continuous start and stop to avoid damage to the ITO heating wiring loop. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the scheme in the present application, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 The utility model provides a structural schematic diagram of a liquid crystal display screen for improving the response speed of liquid crystal at low temperatures.

[0019] Figure 2 for Figure 1 Bottom view of the middle and lower substrate.

[0020] Figure 3 This is a schematic diagram of the structure of Example 2.

[0021] Figure 4 This is a schematic diagram of the structure of Example 3.

[0022] Figure 5 for Figure 4 Schematic diagram of the decomposition structure.

[0023] Figure 6 for Figure 4 Schematic diagram of the improved structure.

[0024] Description of Figure Numbers:

[0025] Lower polarizer 1; lower substrate 2; upper substrate 3; upper polarizer 4; cover plate 5; driver IC 6; TFT FPC 7 ITO heating wiring loop 21; heating FPC 8;

[0026] Base material layer 81; circuit layer 82; metal heat dissipation layer 83; through hole 84;

[0027] Plastic layer 9; groove 51. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0031] The utility model provides a liquid crystal display screen for improving the response speed of liquid crystal at low temperatures, comprising a lower polarizer, a lower substrate, an upper substrate, an upper polarizer and a cover plate which are sequentially stacked from bottom to top, wherein the lower substrate is longer than the upper substrate and extends outward to form a step, a driving IC and a TFTFPC are bound to the upper surface of the lower substrate located at the step, an ITO heating pattern layer is arranged on the lower surface of the lower substrate, the ITO heating pattern layer comprises at least two ITO heating wiring loops arranged in parallel, a heating FPC is bound to the lower surface of the lower substrate located at the step, the heating FPC is electrically connected to the TFT FPC and the ITO heating pattern layer respectively, and each of the ITO heating wiring loops can be controlled separately.

[0032] Since an ITO heating pattern layer is provided on the lower surface of the lower substrate, the ITO heating pattern layer includes at least two ITO heating wiring loops arranged in parallel, each ITO heating wiring loop can be controlled separately, and can still work normally even if one ITO heating wiring loop is broken. At the same time, only the heating function of some of the ITO heating wiring loops can be turned on according to the external ambient temperature requirements, thereby reducing power consumption and eliminating the need for continuous start and stop to avoid damage to the ITO heating wiring loop.

[0033] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. The present invention is described in detail below in conjunction with the accompanying drawings and embodiments, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limitations on the present invention.

[0034] Example 1

[0035] See also Figure 1 and Figure 2 , a liquid crystal display screen for improving the response speed of liquid crystal at low temperature provided by the utility model, comprising a lower polarizer 1, a lower substrate 2, an upper substrate 3, an upper polarizer 4 and a cover plate 5 which are sequentially stacked from bottom to top, the lower substrate 2 being longer than the upper substrate 3 and extending outward to form a step, a driving IC 6 and a TFT FPC 7 are bound to the upper surface of the lower substrate 2 located at the step, an ITO heating pattern layer is arranged on the lower surface of the lower substrate 2, the ITO heating pattern layer comprises at least two ITO heating wiring loops 21 arranged in parallel, a heating FPC 8 is bound to the lower surface of the lower substrate 2 located at the step, the heating FPC 8 is electrically connected to the TFT FPC 7 and the ITO heating pattern layer, and each of the ITO heating wiring loops 21 can be controlled separately. Since an ITO heating pattern layer is provided on the lower surface of the lower substrate 2, the ITO heating pattern layer includes at least two ITO heating wiring loops 21 arranged in parallel, each ITO heating wiring loop 21 can be controlled separately, and can still work normally even if one ITO heating wiring loop 21 is broken. At the same time, only the heating function of a part of the ITO heating wiring loops 21 can be turned on according to the external ambient temperature requirements, which reduces power consumption and does not require continuous start and stop to avoid damage to the ITO heating wiring loop 21.

[0036] Furthermore, there are four ITO heating wiring loops 21 in total, and each ITO heating wiring loop 21 is evenly arranged at each corner of the lower surface of the lower substrate 2 .

[0037] Furthermore, in other embodiments, a heating glass can be arranged below the lower polarizer 1, and the ITO heating pattern layer is arranged on the heating glass. The heating glass is close to the TFT module. Compared with the traditional heating module structure, it is closer to the TFT module, with less heat loss and high heating efficiency.

[0038] Example 2

[0039] See also Figure 3As a further optimization scheme of Example 1, in this embodiment, the heating FPC8 includes a substrate layer 81, a circuit layer 82 arranged on the upper surface of the substrate layer 81, and a metal heat dissipation layer 83 arranged on the lower surface of the substrate layer 81. The arrangement method can be that the circuit layer 82 and the metal heat dissipation layer 83 are respectively attached to the substrate layer 81 by double-sided adhesive. Since the thickness of the substrate layer 81 is relatively thin, the heat on the heating FPC8 can be diffused to the metal heat dissipation layer 83 through the substrate layer 81. The metal heat dissipation layer 83 can effectively increase the heat dissipation area of ​​the heating FPC8 and play a role in uniform heat dissipation, thereby improving the heat dissipation efficiency of the heating FPC8. The substrate layer 81 can be any one of polyimide, polyester, polysulfone or polytetrafluoroethylene, the double-sided adhesive is any one of an acrylic adhesive layer or an epoxy resin adhesive layer, and the metal heat dissipation layer 83 can be a copper foil layer.

[0040] Furthermore, the heating FPC 8 also includes at least one through-hole 84 penetrating the substrate layer 81, the circuit layer 82 and the metal heat dissipation layer 83, and the inner wall of the through-hole 84 is provided with a heat-conducting layer in contact with the circuit layer 82 and the metal heat dissipation layer 83. By utilizing the good thermal conductivity of the through-hole 84, the circuit layer 82 and the metal heat dissipation layer 83 on both sides of the substrate layer 81 can be electrically connected to play a good thermal conductivity function, and the thermal conductive layer can provide a thermal conductive function to achieve a good heat dissipation effect. Among them, the thermal conductive layer can be a copper glue conductive ink layer.

[0041] Furthermore, a heat conductor connected to an external heat-conducting structure is disposed in the through hole 84. The heat conductor is connected to the external heat-conducting structure from one side of the circuit layer 82 and is also in contact with the heat-conducting layer in the through hole 84, so that the circuit layer 82 and the metal heat-dissipating layer 83 can be connected to the external heat-conducting structure through the through hole 84, so that the heat in the heating FPC 8 is diffused to the external heat-conducting structure through the heat conductor in the through hole 84, so as to further improve the heat dissipation efficiency of the heating FPC 8. Preferably, in order to enable the through hole 84 to be connected to the external heat-conducting structure, the through hole 84 is disposed at the edge of the heating FPC 8.

[0042] Furthermore, the metal heat dissipation layer 83 is a uniform heat dissipation structure, and its structure can be any one of a mesh structure, a strip structure, a wavy structure or a honeycomb structure. Through this uniform heat dissipation structure, the heat dissipation effect can be better improved.

[0043] Example 3

[0044] See also Figures 4 to 6As a further optimization scheme of Example 1, in this embodiment, the upper surface of the cover plate 5 is covered with a plastic layer 9, and a plurality of grooves 51 are formed downward on the upper surface of the cover plate 5 by etching, and a portion of the lower surface of the plastic layer 9 is embedded in each groove 51. Since the surface of the groove 51 formed by etching has a certain degree of roughness, the plastic layer 9 can be tightly bonded to the groove 51 to prevent the cover plate 5 and the plastic layer 9 from falling off. Since the upper part of the cover plate 5 is covered with a plastic layer 9, and a plurality of grooves 51 are formed on the upper surface of the cover plate 5 by etching, and the plastic layer 9 can be embedded in the interior of the plurality of grooves 51, the grooves 51 formed by etching make the inner surface of the grooves 51 have a certain degree of roughness, and the surface of the grooves 51 with a certain degree of roughness can improve the bonding force between the grooves 51 and the plastic layer 9, thereby reducing the possibility of separation of the grooves 51 and the plastic layer 9. When the LCD screen is hit or falls, the plastic layer 9 on the upper surface of the cover plate 5 can directly withstand the external force, thereby preventing the external force from directly acting on the cover plate 5. Since the plastic layer 9 can absorb most of the energy, the remaining external force is very weak when it acts on the cover plate 5, thereby effectively reducing the risk of the cover plate 5 being broken or damaged; and when the LCD screen is subjected to external force, even if the external force is large, it will only damage the plastic layer 9 on the upper surface of the cover plate 5, and will not directly damage the cover plate 5, thereby preventing the cover plate 5 from being damaged and causing the LCD screen to be unable to be used normally, thereby bringing a better user experience to the user and improving the anti-fall ability of the LCD screen.

[0045] Furthermore, the shape of the groove 51 can be square or circular, and the cross-sectional shape of the groove 51 can be a closing groove that is narrow on the outside and wide on the inside. In the present embodiment, the cross-sectional shape of the groove 51 is an isosceles trapezoid, and the groove 51 is in the shape of an elongated strip. The isosceles trapezoid-shaped groove 51 can allow the plastic layer 9 to be tightly embedded in the groove 51, thereby preventing the groove 51 from being separated from the plastic layer 9, thereby preventing the cover plate 5 from falling off from the plastic layer 9. The elongated groove 51 can increase the fitting portion between the plastic layer 9 and the groove 51, thereby increasing the fitting strength between the groove 51 and the plastic layer 9.

[0046] Furthermore, a surface treatment layer for improving the surface roughness is provided on the inner surface of the groove 51 to further improve the adhesion between the groove 51 and the plastic layer 9 and prevent the cover plate 5 and the plastic layer 9 from being separated.

[0047] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. A liquid crystal display screen for improving the response speed of liquid crystal at low temperatures, characterized in that: It includes a lower polarizer, a lower substrate, an upper substrate, an upper polarizer and a cover plate which are stacked in sequence from bottom to top. The lower substrate is longer than the upper substrate and extends outward to form a step. The upper surface of the lower substrate located at the step is bound with a driver IC and a TFT FPC. The lower surface of the lower substrate is provided with an ITO heating pattern layer. The ITO heating pattern layer includes at least two ITO heating wiring loops arranged in parallel. The lower surface of the lower substrate located at the step is bound with a heating FPC. The heating FPC is electrically connected to the TFT FPC and the ITO heating pattern layer respectively, and each of the ITO heating wiring loops can be controlled separately.

2. The liquid crystal display screen for improving the response speed of liquid crystal at low temperature according to claim 1, characterized in that: There are 4 ITO heating wiring loops in total.

3. The liquid crystal display screen for improving the response speed of liquid crystal at low temperature according to claim 1, characterized in that: The heating FPC includes a substrate layer, a circuit layer disposed on an upper surface of the substrate layer, and a metal heat dissipation layer disposed on a lower surface of the substrate layer.

4. The liquid crystal display screen for improving the response speed of liquid crystal at low temperature according to claim 3, characterized in that: The heating FPC further includes at least one through-hole penetrating the substrate layer, the circuit layer and the metal heat dissipation layer, and the inner wall of the through-hole is provided with a heat-conducting layer in contact with the circuit layer and the metal heat dissipation layer.

5. The liquid crystal display screen for improving the response speed of liquid crystal at low temperature according to claim 4, characterized in that: A heat conductor connected to an external heat-conducting structure is arranged in the through hole, and the heat conductor is in contact with the heat-conducting layer.

6. The liquid crystal display screen for improving the response speed of liquid crystal at low temperature according to claim 3, characterized in that: The structure of the metal heat dissipation layer is a mesh structure, a strip structure, a wave structure or a honeycomb structure.

7. The liquid crystal display screen for improving the response speed of liquid crystal at low temperature according to claim 1, characterized in that: A plurality of grooves are formed on the upper surface of the cover plate by etching, and a plastic layer is covered on the upper side of the cover plate, and the plastic layer is embedded in the plurality of grooves.

8. The liquid crystal display screen for improving the response speed of liquid crystal at low temperature according to claim 7, characterized in that: The groove is a closing groove which is narrow outside and wide inside.

9. The liquid crystal display screen for improving the response speed of liquid crystal at low temperature according to claim 7, characterized in that: The groove is in the shape of an elongated strip.

10. The liquid crystal display screen for improving the response speed of liquid crystal at low temperature according to claim 7, characterized in that: The inner surface of the groove is provided with a surface treatment layer for improving the surface roughness.

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