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Pointer type LCD device having backlight

A liquid crystal display device, a pointer type technology, applied in the field of instrument technology and devices, and electronics, can solve the problems of low precision of mechanical pointer instruments, limitations of pointer display mechanical structure, low instrument accuracy, etc.

Inactive Publication Date: 2007-07-18
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the influence of the pointer, the accuracy of the pointer instrument is often low. The main reason is that the pointer shows the limitation of the mechanical structure.
The pointer technology of liquid crystal display has developed to a certain extent, such as: pointer watch, etc., but it is only limited to instruments with small volume and microcomputer technology, and instruments without microcomputers have not yet been realized. Liquid crystal display pointer technology
The main problems of welding at present are: (1) it is only used in instruments with microcomputer; (2) it is only used in watches; (3) the precision of mechanical pointer instruments is limited by the mechanical structure

Method used

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  • Pointer type LCD device having backlight
  • Pointer type LCD device having backlight
  • Pointer type LCD device having backlight

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] specific implementation

[0023] In Figure 1, 1 is the measurement function symbol, 2 is the pointer LCD display, 3 is the scale grid, 4 is the liquid crystal pointer, 5 is the scale value, 6 is the center circle, and 7 is the chassis.

[0024] In Fig. 2, 2 is a pointer type liquid crystal display, 8 is a pointer, and there are pointers ZZ 0 ~ZZ 199 There are 200 pointers in total, 9 is the code of the 200th pointer, 10 is the output electrode of the LCD screen, and 11 is the backlight panel.

[0025] As can be seen from FIG. 3 , 12 is a side reflective plane mirror, 13 is a backlight plate, 14 is an LED, and 15 is light after refraction.

[0026] As can be seen from Figure 4, the present invention is composed of a voltage input circuit, an A / D converter circuit, a decoding and driving circuit, a backlight panel, and an LED backlight circuit, and the interconnection relationship is as follows: the output line of the voltage input circuit and the The input line of the...

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PUM

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Abstract

This invention relates to a pointer type LCD apparatus with background light, which comprises voltage input circuit, A / D transducer circuit, code and drive circuit, aphototropism plate, light-emitting diode aphototropism circuit and their connection relations are the following: the output end of the voltage input circuit is connected with input wire of the A / D transducer circuit; the output wire of the A / D transducer is electrically connected with the input wire of the code and drive circuit; the output wire of the code and drive circuit is electrically connected with the input wire of the light-emitting diode display screen; the aphototropism plate is fixed on the back of the light-emitting diode; the light-emitting diode of the light-emitting diode circuit is fixed on the aphototropism plate; the light is reflected inside the aphototropism plate and the light brightness is enhanced; the code and drive circuit can use VHDL language to program and design the element functions.

Description

technical field [0001] The invention relates to the fields of electronics, instrument technology and device technology. Specifically, it is a pointer type liquid crystal display device with backlight. Background technique [0002] There are many display methods of instruments, which are mainly divided into two types: digital and pointer in form. Digital display instruments are more common, and the display technology is relatively mature. Due to the influence of the pointer, the accuracy of the pointer instrument is often low. The main reason is that the pointer shows the limitation of the mechanical structure. The pointer technology of liquid crystal display has been developed to a certain extent, such as: pointer watch, etc., but only limited to the small volume and the instrument utilizing microcomputer technology, and the instrument without microcomputer has not yet realized the liquid crystal display pointer technology. The main problems of welding at present are: (1)...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/13357G02F1/133G02F1/1335
Inventor 郭志友孙慧卿
Owner SOUTH CHINA NORMAL UNIVERSITY