CN216210332U

CN216210332U - Temperature compensation type liquid crystal display module

Info

Publication number: CN216210332U
Application number: CN202122688631.5U
Authority: CN
Inventors: 李�远; 韦启顺; 胡波卫; 王华祖; 胡家春; 肖立高; 劳兴洁; 朱长海; 姚际金; 陈叶国; 陈颖
Original assignee: Guangxi Tianshan Electronic Co ltd
Current assignee: Guangxi Tianshan Electronic Co ltd
Priority date: 2021-11-04
Filing date: 2021-11-04
Publication date: 2022-04-05
Anticipated expiration: 2031-11-04

Abstract

The utility model discloses a temperature compensation type liquid crystal display module, which comprises an LCD, a backlight plate and a control module, wherein the LCD is arranged on the backlight plate, and the control module is connected with the LCD; the LCD comprises an upper polaroid, an upper glass layer, a liquid crystal box, a lower glass layer and a lower polaroid which are sequentially arranged from top to bottom, wherein the lower glass layer is double-faced ITO (indium tin oxide) conductive glass, the upper surface of the double-faced ITO conductive glass is provided with an LCD (1) wiring, a temperature compensation circuit arranged on the lower surface of the double-faced ITO conductive glass is connected with an external driving module, and the temperature compensation circuit wiring is connected with the external driving module. Under the condition of realizing the temperature compensation of the liquid crystal display module, the heating plate glass in the prior art is removed, the total thickness of the product is reduced by 1.1mm, and the effects of lightness, thinness and simple structure are achieved.

Description

Temperature compensation type liquid crystal display module

Technical Field

The utility model relates to the technical field of liquid crystal display module packaging, in particular to a temperature compensation type liquid crystal display module.

Background

With the wider and wider outlet of black and white products, the use conditions of the products are more and more complex and are limited by the characteristics of liquid crystal, the display effect of the products is poorer at ultralow temperature or the products cannot be displayed at all, and the application range of the products is greatly reduced. Therefore, many display screens requiring wide temperature range are equipped with heating plates for heating LCD. The current LCD temperature compensation scheme is mainly implemented by attaching a single heating plate to an LCD mold (see fig. 1 and 2), which is relatively complex in structure and thick. For example, CN201520629110 discloses a liquid crystal display module capable of being used at low temperature, which comprises an LCD, a heating sheet, a backlight plate and a control circuit board, wherein the heating sheet and the backlight plate are sequentially mounted on the control circuit board, and the LCD is connected with the control circuit board and is located on the heating sheet. The utility model controls the display of the LCD by using the control circuit board, and provides a light source for the LCD by depending on the backlight plate, so that the LCD can be normally used even in the dark, and when the environmental temperature is too low, the control circuit board can timely control the heating sheet to work, so as to provide a certain temperature for the LCD and ensure the normal work of the LCD.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a temperature compensation type liquid crystal display module which is light, thin and simple in structure, and can overcome the problem that the liquid crystal display module cannot be effectively fixed during packaging and transportation, and avoid the occurrence of PIN needle deformation and product collapse.

In order to solve the technical problem, the utility model discloses a temperature compensation type liquid crystal display module which comprises an LCD, a backlight plate and a control module, wherein the LCD is arranged on the backlight plate, and the control module is connected with the LCD; the LCD comprises an upper polaroid, an upper glass layer, a liquid crystal box, a lower glass layer and a lower polaroid which are sequentially arranged from top to bottom, wherein the lower glass layer is double-faced ITO (indium tin oxide) conductive glass, the upper surface of the double-faced ITO conductive glass is provided with an LCD (1) wiring, a temperature compensation circuit arranged on the lower surface of the double-faced ITO conductive glass is connected with an external driving module, and the temperature compensation circuit wiring is connected with the external driving module.

The utility model is different from the prior art in that: according to the utility model, the heating plate glass (the temperature compensation circuit wiring is arranged on the heating plate glass) is removed, the temperature compensation circuit wiring is arranged on one surface of the ITO conductive glass, the LCD wiring is arranged on the other surface of the ITO conductive glass, the function of needing three pieces of glass in the prior art is realized by only using two pieces of glass, and the thickness of the liquid crystal display module is reduced.

Preferably, the positive and negative PINs of the temperature compensation circuit wiring are arranged on the lower step of the outer frame, and the positive and negative PINs are connected with the external driving module. The design can reduce the width of the liquid crystal display module.

Preferably, a thermistor for temperature measurement is integrated on the control module.

The control module comprises a driving chip and a flexible circuit board connected with the driving chip, the driving chip is connected with the LCD, and the thermistor is integrated on the flexible circuit board.

Preferably, the SEG wiring of the LCD is arranged on the upper surface of the double-sided ITO conductive glass, and the COM wiring of the LCD is arranged on the lower surface of the upper glass layer.

Compared with the prior art, the utility model has the following advantages:

1. under the condition of realizing the temperature compensation of the liquid crystal display module, the heating plate glass in the prior art is removed, the total thickness of the product is reduced by 1.1mm, and the effects of lightness, thinness and simple structure are achieved; and the process of product assembly is reduced (the process of assembling the heating plate glass is omitted), and only the assembly and the attachment of the LCD and the backlight plate are left.

2. Adopt two-sided ITO conductive glass as lower glass layer, set up temperature compensation circuit to walk the line and LCD's SEG walks the line respectively in ITO conductive glass's both sides, realized that temperature compensation circuit walks the line and LCD's SEG walks the line at the both sides of same glass.

3. The utility model moves the positive and negative PIN needles of the temperature compensation circuit wiring from the left and right sides of the outer frame to the lower step of the outer frame, and the width of the liquid crystal display module is further reduced.

Drawings

Fig. 1 is a front view of a temperature compensation type liquid crystal display module in the related art;

FIG. 2 is a side view of a prior art temperature compensated liquid crystal display module;

FIG. 3 is a front view of a temperature compensated liquid crystal display module according to the present invention;

FIG. 4 is a side view of a temperature compensated liquid crystal display module according to the present invention.

Reference numerals: 1. an LCD; 11. an upper polarizer; 12. an upper glass layer; 13. a lower glass layer; 14. a lower polarizer; 2. a backlight plate; 3. a control module; 31. a driving chip; 32. a flexible circuit board; 4. frame, 5, heating plate, 6 double faced adhesive tape.

Detailed Description

In order that the objects and advantages of the utility model will be more clearly understood, the following detailed description of the utility model is given in conjunction with the accompanying drawings and examples.

As shown in fig. 3 and 4, the utility model discloses a temperature compensation type liquid crystal display module, which comprises an LCD1, a backlight plate 2 and a control module 3. The control module 3 is connected with the LCD1, the LCD1 includes an upper polarizer 11, an upper glass layer 12, a lower glass layer 13 and a lower polarizer 14 which are sequentially arranged from top to bottom (from front to back when in use), a liquid crystal box (which cannot be shown in fig. 4 due to too thin thickness of the liquid crystal box) is sandwiched between the upper glass layer 12 and the lower glass layer 13, and the backlight plate 2 is arranged on the lower surface of the lower polarizer 14.

The lower glass layer 13 is double-sided ITO conductive glass, a temperature compensation circuit arranged on the lower surface of the double-sided ITO conductive glass is wired, and the temperature compensation circuit is designed into an equivalent resistor to meet the heating power requirement. LCD1 wires are arranged on the upper surface of the double-sided ITO conductive glass, and the temperature compensation circuit wires are connected with an external driving module; specifically, SEG traces of the LCD1 are disposed on the upper surface of the double-sided ITO conductive glass, and COM traces of the LCD1 are disposed on the lower surface of the upper glass layer 11.

Positive and negative pole PIN needles of the temperature compensation circuit wiring are arranged on the lower step of the outer frame 4, and the positive and negative pole PIN needles are connected with an external driving module. Compared with the prior art, positive and negative pole PIN needles of the warm-patch circuit wiring are moved to the lower step of the outer frame 4 from the left and right sides of the outer frame 4, the width of the liquid crystal display module is further reduced, the length of the liquid crystal display module can not be increased, and the area of the liquid crystal display module is also reduced.

As a preferred embodiment, the control module 3 includes a driving chip 31 and a flexible circuit board 32, the driving chip 31 is connected to the flexible circuit board 32, and the driving chip 31 is connected to the SEG trace of the LCD1 and the COM trace of the LCD 1. A thermistor is integrated on the flexible circuit board 32, and the thermistor is used for detecting the temperature of the liquid crystal display module in real time and starting a heating function in a temperature range needing heating. When the liquid crystal display module works, the most appropriate voltage compensation amount of the LCD1 is obtained according to the detected temperature, the temperature characteristic of the liquid crystal and the requirement of the liquid crystal compensation amount.

The above-described embodiments are only specific examples for further explaining the object, technical solution and advantageous effects of the present invention in detail, and the present invention is not limited thereto. Any modification, equivalent replacement, improvement and the like made within the scope of the disclosure of the present invention are included in the protection scope of the present invention.

Claims

1. A temperature compensation type liquid crystal display module comprises an LCD (1), a backlight plate (2) and a control module (3), wherein the LCD (1) is arranged on the backlight plate (2), and the control module (3) is connected with the LCD (1); LCD (1) is including last polaroid (11), last glass layer (12), liquid crystal box, lower glass layer (13) and lower polaroid (14) that set gradually from top to bottom, its characterized in that: the lower glass layer (13) is double-sided ITO conductive glass, LCD (1) wiring is arranged on the upper surface of the double-sided ITO conductive glass, temperature compensation circuit wiring is arranged on the lower surface of the double-sided ITO conductive glass, and the temperature compensation circuit wiring is connected with an external driving module.

2. The temperature-compensated liquid crystal display module of claim 1, wherein: positive and negative pole PIN needles of the temperature compensation circuit wiring are arranged on the lower step of the outer frame (4), and the positive and negative pole PIN needles are connected with the external driving module.

3. The temperature-compensated liquid crystal display module of claim 1, wherein: and a thermistor for temperature measurement is integrated on the control module (3).

4. A temperature compensated liquid crystal display module according to claim 3, wherein: the control module (3) comprises a driving chip (31) and a flexible circuit board (32) connected with the driving chip (31), the driving chip (31) is connected with the LCD (1), and the thermistor is integrated on the flexible circuit board (32).

5. The temperature-compensated liquid crystal display module of any one of claims 1-4, wherein: the SEG wiring of the LCD (1) is arranged on the upper surface of the double-sided ITO conductive glass, and the COM wiring of the LCD (1) is arranged on the lower surface of the upper glass layer (12).