Passive liquid crystal display screen and calculator

Abstract

The utility model discloses a passive liquid crystal display screen and calculator, the passive liquid crystal display screen comprises a glass substrate, the glass substrate comprises a functional area and a non-functional area, the surface of the glass substrate located in the functional area is provided with functional patterns and ITO (Indium Tin Oxide) functional wires, and the functional patterns and the ITO functional wires are arranged on the surface of the glass substrate located in the non-functional area. The upper surface of the glass substrate positioned in the non-functional area is provided with a latticed ITO (Indium Tin Oxide) functional wire, the ITO functional wire is electrically connected with the ITO grid wire, the upper surface of the glass substrate positioned in a grid area in the ITO grid wire is provided with a suspended ITO block, and the ITO grid wire is not connected with the suspended ITO block. The remaining space is filled with the ITO grid wires, the ITO grid wires are in a grid shape, and the suspended ITO blocks are arranged in the grid areas in the ITO grid wires, so that the problem that the area change of the functional wires is too large due to the fact that the wiring space needs to be filled can be reduced, and the problem that the electrostatic discharge of the suspended ITO blocks is slow can be solved. The suspended ITO blocks are surrounded by the ITO grid wires, so that the electrostatic discharge is accelerated.

Description

Technical Field

[0001] This utility model relates to the field of display technology, and more specifically, to a passive liquid crystal display screen and a calculator. Background Technology

[0002] When dealing with the wiring of passive TN or STN monitors, if there is a large amount of space for wiring, and the remaining blank space is not used for wiring, an uneven background shadow problem will occur. To solve the background shadow problem, the remaining wiring space is usually filled with ITO wires. This can be done by filling the space with live functional wires at a distance, or by filling it with empty ITO wires that are not connected to power.

[0003] If charged functional lines are used as fillers, the area of ​​the ITO wires will increase, making them more susceptible to static electricity during production. This static electricity may burn out the ITO wires, resulting in functional problems.

[0004] If you fill the display with empty ITO wires that are not connected to electricity, it will be easy for static electricity to be generated. Because the ITO wires are suspended and not connected to electricity, the static electricity will dissipate slowly, which will show bright spots on the display and cause appearance problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is how to avoid the functional problems caused by the increase of the ITO line area due to static electricity burning during the production process, and how to avoid the appearance problem of the bright block caused by the slow static discharge of the empty ITO line that is not connected to electricity.

[0006] The technical problem to be solved by this utility model is achieved through the following technical solution:

[0007] To solve the above-mentioned technical problems, this utility model provides a passive liquid crystal display screen, which includes a glass substrate. The glass substrate includes functional areas and non-functional areas. Functional patterns and ITO functional traces are disposed on the surface of the glass substrate located in the functional areas. A grid-like ITO grid trace is disposed on the upper surface of the glass substrate located in the non-functional areas. The ITO functional traces are electrically connected to the ITO grid traces. A suspended ITO block is disposed on the upper surface of the glass substrate within the grid area of ​​the ITO grid traces. The ITO grid traces are not connected to the suspended ITO block.

[0008] In a preferred embodiment of the passive liquid crystal display provided by this utility model, the width of the ITO grid trace is smaller than the width of the ITO functional trace.

[0009] In a preferred embodiment of the passive liquid crystal display screen provided by this utility model, the suspended ITO block is triangular, square, or circular in shape.

[0010] In a preferred embodiment of the passive liquid crystal display provided by this utility model, an FPC extends outward from the glass substrate, and a surface frame is provided above the glass substrate. The surface frame includes a top plate and a side wall extending downward from the edge of the top plate. The glass substrate is disposed within the space enclosed by the top plate and the side wall. A notch is provided on the side wall near the FPC to avoid the FPC. The top plate above the FPC and the driver IC is provided with a bent pressure rib.

[0011] In a preferred embodiment of the passive liquid crystal display provided by this utility model, the size of each side of the notch is 0.5mm to 1mm larger than the size of each side of the FPC.

[0012] In a preferred embodiment of the passive liquid crystal display screen provided by this utility model, the width of the bending pressure bone is 1mm to 2mm.

[0013] In a preferred embodiment of the passive liquid crystal display screen provided by this utility model, the length of the bent pressure bone is more than 4mm longer than the length of the notch.

[0014] In a preferred embodiment of the passive liquid crystal display provided by this utility model, the distance between the lower surface of the bending pressure bone and the upper surface of the FPC and the driver IC is greater than 0.2 mm.

[0015] In a preferred embodiment of the passive liquid crystal display screen provided by this utility model, the shape of the bending pressure bone is semi-circular.

[0016] This invention provides a calculator that includes a passive liquid crystal display screen as described in any of the preceding claims.

[0017] This utility model has the following beneficial effects:

[0018] The remaining space is filled by ITO mesh traces, which are grid-shaped. Suspended ITO blocks are placed within the grid areas of the ITO mesh traces. This reduces the problem of excessive changes in the functional trace area caused by filling the trace space, and also solves the problem of slow electrostatic discharge from suspended ITO blocks. Because the suspended ITO blocks are surrounded by the ITO mesh traces, electrostatic discharge is accelerated. This avoids the functional problems caused by increased ITO line area during production due to static electricity, and also avoids the visual problem of slow electrostatic discharge from empty, unconnected ITO lines causing bright display blocks. Attached Figure Description

[0019] To more clearly illustrate the solutions in this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a passive liquid crystal display screen provided by this utility model.

[0021] Figure 2 This is a schematic diagram of the structure of Example 2.

[0022] Figure 3 for Figure 2 A schematic diagram of the structure of the central iron frame.

[0023] Explanation of icon numbers:

[0024] 1. Glass substrate; 11. Functional pattern; 12. ITO functional traces; 13. ITO grid traces; 14. Suspended ITO block; 2. FPC; 3. Surface iron frame; 31. Top plate; 32. Side wall; 33. Notch; 34. Bending pressure bone. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] This utility model provides a passive liquid crystal display screen, which includes a glass substrate. The glass substrate includes functional areas and non-functional areas. Functional patterns and ITO functional traces are provided on the surface of the glass substrate located in the functional areas. A grid-like ITO grid trace is provided on the upper surface of the glass substrate located in the non-functional areas. The ITO functional traces are electrically connected to the ITO grid traces. A suspended ITO block is provided on the upper surface of the glass substrate within the grid area of ​​the ITO grid traces. The ITO grid traces are not connected to the suspended ITO block.

[0029] The remaining space is filled by ITO mesh traces, which are grid-shaped. Suspended ITO blocks are placed within the grid areas of the ITO mesh traces. This reduces the problem of excessive changes in the functional trace area caused by filling the trace space, and also solves the problem of slow electrostatic discharge from suspended ITO blocks. Because the suspended ITO blocks are surrounded by the ITO mesh traces, electrostatic discharge is accelerated. This avoids the functional problems caused by increased ITO line area during production due to static electricity, and also avoids the visual problem of slow electrostatic discharge from empty, unconnected ITO lines causing bright display blocks.

[0030] 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 with reference to the accompanying drawings. The present invention will be described in detail below with reference to the accompanying drawings and embodiments, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0031] Example 1, please refer to Figure 1This invention provides a passive liquid crystal display screen, comprising a glass substrate 1, which includes functional and non-functional areas. Functional patterns 11 and ITO functional traces 12 are disposed on the surface of the glass substrate 1 in the functional areas. A grid-like ITO grid trace 13 is disposed on the upper surface of the glass substrate 1 in the non-functional areas. The ITO functional traces 12 are electrically connected to the ITO grid traces 13. Suspended ITO blocks 14 are disposed on the upper surface of the glass substrate 1 within the grid area of ​​the ITO grid traces 13, and are not connected to the ITO grid traces 13. The remaining space is filled by the ITO grid traces 13, which are grid-shaped. The placement of suspended ITO blocks 14 within the grid area of ​​the ITO grid traces 13 reduces the problem of excessive changes in the functional trace area due to filling the trace space, and also solves the problem of slow electrostatic discharge of the suspended ITO blocks 14. Because the suspended ITO blocks 14 are surrounded by the ITO grid traces 13, electrostatic discharge is accelerated. This avoids the functional problems caused by the increased area of ​​the ITO lines during production due to static electricity, and also avoids the appearance problem of bright blocks caused by slow static discharge due to empty ITO lines being suspended and not connected to power.

[0032] Furthermore, the width of the ITO mesh trace 13 is smaller than the width of the ITO functional trace 12 to avoid increasing the trace area of ​​the ITO mesh trace 13.

[0033] Furthermore, the suspended ITO block 14 can be triangular, square, or circular in shape.

[0034] Example 2, please refer to Figure 2 and Figure 3 As a further optimization of Embodiment 1, in this embodiment, an FPC2 is extended outward from the glass substrate 1, and a surface frame 3 is provided above the glass substrate 1. The surface frame 3 includes a top plate 31 and a side wall 32 extending downward from the edge of the top plate 31. The glass substrate 1 is disposed in the space enclosed by the top plate 31 and the side wall 32. A notch 33 is provided on the side wall 32 near the FPC2 to avoid the FPC2. The top plate 31 above the FPC2 and the driver IC is provided with a bent pressure bone 34 formed by bending.

[0035] Because the sidewall 32 near FPC2 has a notch 33 to avoid FPC2, the bending space of FPC2 is increased, and the problem of the arching force of FPC2 pushing up the sidewall 32 of the faceplate 3 during bending is avoided. This improves the dimensional qualification rate of the LCD screen, avoids interference when the client assembles the casing, and ensures smooth assembly between the client and the casing. At the same time, the top plate 31 above FPC2 and driver IC is provided with a bending rib 34 to ensure that the faceplate 3 has sufficient strength and avoids the decrease in strength caused by the notch 33.

[0036] Furthermore, the dimensions of each side of the notch 33 are 0.5 mm to 1 mm larger than the dimensions of each side of the FPC2 to avoid interference between the notch 33 and the FPC2.

[0037] Furthermore, the width of the bent pressure rib 34 is 1mm to 2mm. The length of the bent pressure rib 34 is more than 4mm longer than the length of the notch 33. In this embodiment, the length of one side of the bent pressure rib 34 is more than 2mm longer than the length of one side of the notch 33, that is, the left side of the bent pressure rib 34 is 2mm longer than the left side of the notch 33, and the right side of the bent pressure rib 34 is 2mm longer than the right side of the notch 33. This is to ensure that the faceplate frame 3 has better strength.

[0038] Furthermore, the distance between the lower surface of the bending pressure bone 34 and the upper surfaces of the FPC2 and the driver IC is greater than 0.2 mm to avoid potential interference between the bending pressure bone 34 and the driver IC and FPC2.

[0039] Furthermore, the shape of the bent compression bone 34 is semi-circular.

[0040] This invention provides a calculator that includes a passive liquid crystal display screen as described in any of the preceding claims.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.

Claims

1. A passive liquid crystal display screen, characterized in that, It includes a glass substrate, which includes functional areas and non-functional areas. Functional patterns and ITO functional traces are formed on the surface of the glass substrate located in the functional areas. A grid-like ITO grid trace is formed on the upper surface of the glass substrate located in the non-functional areas. The ITO functional traces are electrically connected to the ITO grid traces. A suspended ITO block is formed on the upper surface of the glass substrate within the grid area of ​​the ITO grid traces. The ITO grid traces are not connected to the suspended ITO block.

2. The passive liquid crystal display screen according to claim 1, characterized in that, The width of the ITO mesh trace is smaller than the width of the ITO functional trace.

3. The passive liquid crystal display screen according to claim 1, characterized in that, The suspended ITO block can be triangular, square, or circular in shape.

4. The passive liquid crystal display screen according to claim 1, characterized in that, An FPC extends outward from the glass substrate, and a surface frame is provided above the glass substrate. The surface frame includes a top plate and a side wall extending downward from the edge of the top plate. The glass substrate is disposed within the space enclosed by the top plate and the side wall. A notch is provided on the side wall near the FPC to avoid the FPC. The top plate above the FPC and the driver IC is provided with a bent pressure rib.

5. The passive liquid crystal display screen according to claim 4, characterized in that, Each side of the notch is 0.5 mm to 1 mm larger than each side of the FPC.

6. The passive liquid crystal display screen according to claim 4, characterized in that, The width of the bent bone is 1mm to 2mm.

7. The passive liquid crystal display screen according to claim 4, characterized in that, The length of the bent bone is more than 4 mm longer than the length of the notch.

8. The passive liquid crystal display screen according to claim 4, characterized in that, The distance between the lower surface of the bent compression bone and the upper surface of the FPC and the driving IC is greater than 0.2 mm.

9. The passive liquid crystal display screen according to claim 4, characterized in that, The shape of the bent bone is semi-circular.

10. A calculator, characterized in that, It includes the passive liquid crystal display screen as described in any one of claims 1-9.

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