CN213751754U - Liquid crystal display device and electric energy meter applying same - Google Patents
Liquid crystal display device and electric energy meter applying same Download PDFInfo
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- CN213751754U CN213751754U CN202021422034.7U CN202021422034U CN213751754U CN 213751754 U CN213751754 U CN 213751754U CN 202021422034 U CN202021422034 U CN 202021422034U CN 213751754 U CN213751754 U CN 213751754U
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Abstract
The utility model discloses a liquid crystal display device, including the liquid crystal board, the liquid crystal board includes liquid crystal display module and liquid crystal drive circuit, the liquid crystal display module includes by liquid crystal drive circuit driven LCD, its characterized in that: the liquid crystal display module further comprises at least one of an active indicating circuit, a reactive indicating circuit, an alarm indicating circuit and a switching indicating circuit. Also discloses an electric energy meter applying the liquid crystal display device. Compared with the prior art, the utility model has the advantages of: the liquid crystal panel integrating at least one of the active indicating circuit, the reactive indicating circuit, the alarm indicating circuit and the switching indicating circuit can meet the requirements of diversified functions and rich display contents of the display device; in addition, due to the high integration of the liquid crystal panel, the conventional processes such as chip mounting, plug-in and the like are not needed, and the liquid crystal panel can be used only by plugging the golden finger on the mainboard of the electric energy meter, so that the production process is simplified, the efficiency is improved, and the cost is reduced.
Description
Technical Field
The utility model belongs to the technical field of the display technology and specifically relates to a liquid crystal display device to and use electric energy meter that has this liquid crystal display device.
Background
With the rapid development of economy, the automation and intelligence of production and life are more and more depended on by people, and the demand for electric power cannot be kept away. The scale of the power terminal is also continuously expanding as a ring of the grid terminal.
The electric energy meter is an important electric power terminal, and with the development of the electric energy meter, a long development process is carried out from a former mechanical meter to a register meter to a current liquid crystal display electronic watch. At present, liquid crystal displays used by intelligent electric meters of national power grids and southern power grids are all of a segment code COB type, and generally adopt an HTN liquid crystal display mode and a metal pin connection mode.
In order to simplify the process and reduce the volume, there are also smart meters using cog (chip On glass) liquid crystal displays. The electric energy meter disclosed in chinese patent application No. 201520673161.7 includes a COG liquid crystal panel and a COG liquid crystal support, the COG liquid crystal panel is integrated with a driving chip, a lead on the liquid crystal panel is integrated on the driving chip through an internal wiring, a pin is led out on the driving chip, and the pin is located at an oblique lower side of the liquid crystal panel; the COG backlight bracket comprises a liquid crystal screen visual area, a backlight source pin mounting hole, a liquid crystal screen pin mounting hole, a light emitting tube mounting hole and an infrared emission receiving mounting hole, wherein the backlight source pin mounting hole is positioned at the oblique lower part; the light emitting tube mounting hole and the infrared receiving mounting hole are positioned below the light emitting tube mounting hole; the liquid crystal screen pin mounting hole is positioned on the side edge on the same side as the backlight source pin mounting hole; the liquid crystal screen can be a region-mounted COG liquid crystal screen board, and pins on the COG liquid crystal screen board are mounted in the backlight source pin mounting holes.
However, with the upgrade of national power grid requirements, due to the fact that the number of pins of the segment code type liquid crystal display is large, display contents are fixed, and display capacity is limited, when the functional requirements of the intelligent electric meter are upgraded, the display contents of the display may not meet the functional requirements of the electric meter, and the updating and upgrading are inconvenient, and the defects restrict the range of the use area and the updating of technical functions of the intelligent electric meter, and the increasing functional requirements cannot be met.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the first technical problem that will solve is not enough to above-mentioned prior art existence, provides a liquid crystal display device, can reduction in production cost for the function is diversified.
The second technical problem to be solved by the present invention is to provide an electric energy meter with the above liquid crystal display device.
The utility model provides a technical scheme that above-mentioned first technical problem adopted does: a liquid crystal display device comprising a liquid crystal panel including a liquid crystal display module and a liquid crystal drive circuit, the liquid crystal display module including an LCD driven by the liquid crystal drive circuit, characterized in that: the liquid crystal display module further comprises at least one of an active indicating circuit, a reactive indicating circuit, an alarm indicating circuit and a switching indicating circuit.
Preferably, the liquid crystal display module comprises an active power indicating circuit, and the active power indicating circuit comprises a first light emitting diode.
Preferably, the liquid crystal display module comprises a reactive power indicating circuit, and the reactive power indicating circuit comprises a second light emitting diode.
Preferably, the liquid crystal display module comprises an alarm indicating circuit, and the alarm indicating circuit comprises a third light emitting diode.
Preferably, the liquid crystal display module includes a pull-out indication circuit, and the pull-out indication circuit includes a fourth light emitting diode.
Further, in order to facilitate on-site meter reading, the liquid crystal panel further comprises an infrared communication module, and the infrared communication module comprises an infrared transmitting circuit and an infrared receiving circuit.
In order to facilitate connection of the liquid crystal panel to an external control part, the liquid crystal display device further includes a golden finger connecting the liquid crystal panel to an external control panel.
Preferably, the active indicating circuit, the reactive indicating circuit, the alarm indicating circuit and the switching indicating circuit are respectively connected to one of the I/O ports of the golden finger.
Preferably, when the liquid crystal panel includes an infrared communication module, a data receiving end of the infrared transmitting circuit is connected to one of the I/O ports of the golden finger, and a data transmitting end of the infrared receiving circuit is connected to one of the I/O ports of the golden finger.
The utility model provides a technical scheme that above-mentioned second technical problem adopted does: an electric energy meter using the liquid crystal display device comprises a main board, and is characterized in that: the main board is used as an external control board, and the liquid crystal board is connected with the main board through the golden fingers.
Compared with the prior art, the utility model has the advantages of: the liquid crystal panel integrating at least one of the active indicating circuit, the reactive indicating circuit, the alarm indicating circuit and the switching indicating circuit can meet the requirements of diversified functions and rich display contents of the display device; in addition, due to the high integration of the liquid crystal panel, the conventional processes such as chip mounting, plug-in and the like are not needed, and the liquid crystal panel can be used only by plugging the golden finger on the mainboard of the electric energy meter, so that the production process is simplified, the efficiency is improved, and the cost is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a liquid crystal display device according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a liquid crystal display device according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar functions.
In the description of the present invention, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the disclosed embodiments of the invention may be oriented in different directions and the directional terms are intended to be illustrative and should not be construed as limiting, such as "upper" and "lower" are not necessarily limited to directions opposite to or coincident with the direction of gravity. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
Referring to fig. 1 and 2, a liquid crystal display device includes a liquid crystal panel 1 and a golden finger 2, wherein the liquid crystal panel 1 adopts COG segment code liquid crystal, and a liquid crystal display module 11, a liquid crystal driving circuit 12 and an infrared communication module 13 are integrated in the liquid crystal panel 1 and connected with an external control panel through the golden finger 2. Preferably, the liquid crystal display device of the embodiment is used for an electric energy meter, and the liquid crystal panel 1 is connected with a main board of the electric energy meter through the golden finger 2.
The liquid crystal display module 11 includes an LCD111, and at least one of an active indicating circuit 112, a reactive indicating circuit 113, an alarm indicating circuit 114, and a pull-out indicating circuit 115.
In the present embodiment, it is preferable that the LCD111 employs 18C 10695H. The active indicating circuit 112 comprises a first light emitting diode HL1 and a first resistor R1, the reactive indicating circuit 113 comprises a second light emitting diode HL2 and a second resistor R2, the alarm indicating circuit 114 comprises a third light emitting diode HL3 and a third resistor R3, and the switching indicating circuit 115 comprises a fourth light emitting diode HL4 and a fourth resistor R4. The anode of each light emitting diode is connected to the power supply VDD2, the cathode of each light emitting diode is connected to one end of a corresponding resistor, and the other end of the resistor is connected to one of the I/O ports of the gold finger 2, which are CTL _ RED _ LED1_1, CTL _ RED _ LED2_2, CTL _ ALARM _ LED and CTL _ YELLOW _ LED _1, respectively.
The liquid crystal driving circuit 12 is used for driving the LCD111, and includes a driving chip 121 and its peripheral circuits, in this embodiment, the driving chip 121 is BU97950FUV-BZE 2.
The infrared communication module 13 is used for on-site meter reading and comprises an infrared transmitting circuit 131 and an infrared receiving circuit 132, wherein a data receiving end (RXD _ IR) of the infrared transmitting circuit 131 is connected to one of the I/O ports (RXD _ IR) of the golden finger 2, and a data transmitting end (TXD _ IR) of the infrared receiving circuit 132 is connected to one of the I/O ports (TXD _ IR) of the golden finger 2. Therefore, the infrared transmitting circuit 131 can receive the data to be sent transmitted by the motherboard of the electric energy meter through the gold finger 2, and the infrared receiving circuit 132 can transmit the received data to the motherboard of the electric energy meter through the gold finger 2.
The gold finger 2 in this embodiment adopts a DIP20/2.54mm package structure.
By adopting the liquid crystal panel 1, the liquid crystal panel 1 with high integration level can be realized, and due to the high integration level, the conventional processes such as surface mounting, plug-in and the like can be omitted, and the liquid crystal panel can be used only by inserting the golden finger 2 into a mainboard of the electric energy meter, so that the production process is simplified, the efficiency is improved, and the cost is reduced.
Claims (10)
1. A liquid crystal display device comprising a liquid crystal panel (1), the liquid crystal panel (1) including a liquid crystal display module (11) and a liquid crystal drive circuit (12), the liquid crystal display module (11) including an LCD (111) driven by the liquid crystal drive circuit (12), characterized in that: the liquid crystal display module (11) further comprises at least one of an active indicating circuit (112), a reactive indicating circuit (113), an alarm indicating circuit (114) and a switching indicating circuit (115).
2. The liquid crystal display device according to claim 1, wherein: the liquid crystal display module (11) comprises an active indicating circuit (112), and the active indicating circuit (112) comprises a first light emitting diode (HL 1).
3. The liquid crystal display device according to claim 1, wherein: the liquid crystal display module (11) comprises a reactive power indicating circuit (113), and the reactive power indicating circuit (113) comprises a second light emitting diode (HL 2).
4. The liquid crystal display device according to claim 1, wherein: the liquid crystal display module (11) comprises an alarm indicating circuit (114), and the alarm indicating circuit (114) comprises a third light emitting diode (HL 3).
5. The liquid crystal display device according to claim 1, wherein: the liquid crystal display module (11) comprises a switching-out indicating circuit (115), and the switching-out indicating circuit (115) comprises a fourth light-emitting diode (HL 4).
6. The liquid crystal display device according to claim 1, wherein: the liquid crystal panel (1) further comprises an infrared communication module (13), and the infrared communication module (13) comprises an infrared transmitting circuit (131) and an infrared receiving circuit (132).
7. The liquid crystal display device according to any one of claims 1 to 6, wherein: the liquid crystal display device further comprises golden fingers (2) for connecting the liquid crystal panel (1) with an external control panel.
8. The liquid crystal display device according to claim 7, wherein: the active indicating circuit (112), the reactive indicating circuit (113), the alarm indicating circuit (114) and the switch-off indicating circuit (115) are respectively connected to one I/O port of the golden finger (2).
9. The liquid crystal display device according to claim 6, wherein: the liquid crystal display panel further comprises a golden finger (2) for connecting the liquid crystal panel (1) with an external control panel, a data receiving end of the infrared transmitting circuit (131) is connected to one of I/O ports of the golden finger (2), and a data transmitting end of the infrared receiving circuit (132) is connected to one of I/O ports of the golden finger (2).
10. An electric energy meter using the liquid crystal display device according to any one of claims 7 to 9, comprising a main board, wherein: the main board is used as an external control board, and the liquid crystal board (1) is connected with the main board through the golden finger (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021422034.7U CN213751754U (en) | 2020-07-17 | 2020-07-17 | Liquid crystal display device and electric energy meter applying same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021422034.7U CN213751754U (en) | 2020-07-17 | 2020-07-17 | Liquid crystal display device and electric energy meter applying same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213751754U true CN213751754U (en) | 2021-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021422034.7U Active CN213751754U (en) | 2020-07-17 | 2020-07-17 | Liquid crystal display device and electric energy meter applying same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213751754U (en) |
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- 2020-07-17 CN CN202021422034.7U patent/CN213751754U/en active Active
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