CN210038395U

CN210038395U - STN liquid crystal screen capable of realizing ultralow temperature display

Info

Publication number: CN210038395U
Application number: CN201921047519.XU
Authority: CN
Inventors: 童元勇
Original assignee: Dongguan City Sanjie Digital Technology Co Ltd
Current assignee: Dongguan City Sanjie Digital Technology Co Ltd
Priority date: 2019-07-07
Filing date: 2019-07-07
Publication date: 2020-02-07
Anticipated expiration: 2029-07-07

Abstract

An STN liquid crystal display capable of realizing ultra-low temperature display, comprising: go up polaroid, last ITO layer, liquid crystal layer, ITO layer and polaroid down, go up polaroid, last ITO layer, liquid crystal layer, ITO layer and polaroid down from last laminating in proper order down, the STN LCD screen still includes: and the shape and the size of the heat conductive film are the same as those of the liquid crystal layer.

Description

STN liquid crystal screen capable of realizing ultralow temperature display

Technical Field

The utility model relates to a STN LCD screen especially relates to a STN LCD screen that can realize ultra-low temperature demonstration.

Background

The STN liquid crystal is a super twisted nematic liquid crystal, and is twisted by 90 degrees and 180 to 270 degrees relative to the TN liquid crystal. One pixel of the STN liquid crystal consists of three liquid crystal cells, covered with a layer of color filter, and the color can be produced by controlling the brightness of the liquid crystal cells with voltage.

However, in general STN liquid crystal panels, when the panels are operated at-40 ℃ or below, the display is not possible or is severely uneven, and even if good liquid crystal materials and ICs are used, it is difficult to improve the normal display, and the customer's demand for display in an ultra-low temperature environment cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model discloses technical scheme is to above-mentioned condition, and in order to solve above-mentioned problem and provide a STN LCD screen that can realize ultra-low temperature demonstration, the STN LCD screen includes: go up polaroid, last ITO layer, liquid crystal layer, ITO layer and polaroid down, go up the polaroid go up the ITO layer the liquid crystal layer down the ITO layer with the polaroid is from last down laminating in proper order down, the STN LCD screen still includes: and the heat conductive film is positioned below the lower polarizer, and the shape and the size of the heat conductive film are the same as those of the liquid crystal layer.

Further, the liquid crystal layer includes: the liquid crystal display panel comprises a frame, a spacer and a plurality of liquid crystal molecules, wherein the spacer is positioned in the middle of the frame, and the liquid crystal molecules are embedded in the spacer and arranged in a matrix form.

Further, the spacer is a glass spacer or a plastic spacer.

Further, the thermally conductive film includes: the thin film is positioned on the upper surface of the support, and the two electrodes are simultaneously electrically connected with the thin film.

Further, the thermally conductive film further includes: two silver thick liquid coatings, two silver thick liquid coatings cover respectively in the position of the both sides edge of film upper surface, and two silver thick liquid coatings all extend to the rear end from the front end of film.

After the technical scheme is adopted, the utility model discloses an effect is: the STN LCD screen with the structure can realize normal display in an ultralow temperature environment on the one hand, and can be uniform on the other hand in the display effect, thereby avoiding the condition of non-uniform display.

Drawings

Fig. 1 is a schematic structural diagram of an STN lcd panel according to the present invention;

fig. 2 is a schematic structural view of a thermally conductive film according to the present invention.

Detailed Description

It is specifically noted that the terms "first", "second" and "third" in the present application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. All directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture, and if the specific posture is changed, the directional indicator is changed accordingly.

The technical solution of the present invention is further described below by way of examples:

the utility model provides a can realize STN LCD screen of ultra-low temperature demonstration, as shown in FIG. 1, STN LCD screen includes: the upper polaroid 1, the upper ITO layer 2, the liquid crystal layer 3, the lower ITO layer 4, the lower polaroid 5 and the heat conducting thin film 6 are sequentially attached to the upper polaroid 1, the upper ITO layer 2, the liquid crystal layer 3, the lower ITO layer 4 and the lower polaroid 5 from top to bottom, the heat conducting thin film 6 is located below the lower polaroid 5, and the shape and the size of the heat conducting thin film 6 are the same as those of the liquid crystal layer 3. The display principle of the STN lcd is the same as that of the prior art, and is not described herein again. After the heat conductive film 6 with the same size and shape as the liquid crystal layer 3 is added at the bottom of the STN liquid crystal screen, when the heat conductive film 6 is electrified with direct current, the heat conductive film 6 converts electric energy into heat energy (namely, the principle of electric heating wire), even in an ultralow temperature (T is less than or equal to minus 40 ℃), the liquid crystal layer 3 can normally display after absorbing the heat energy, and has better contrast. Even if expensive liquid crystal and a drive IC are adopted in the traditional STN liquid crystal screen, normal display at ultralow temperature cannot be realized, and therefore, the structure not only solves the problem of ultralow-temperature display, but also reduces the cost of the liquid crystal and the drive IC.

Specifically, the liquid crystal layer 3 includes: the liquid crystal display panel comprises a frame 31, a spacer 32 and a plurality of liquid crystal molecules 33, wherein the spacer 32 is located in the middle of the frame 31, and the plurality of liquid crystal molecules 33 are embedded in the spacer 32 and arranged in a matrix form. More specifically, the spacer 32 may be a glass spacer or a plastic spacer.

Specifically, as shown in fig. 1 and 2 in conjunction, the thermally conductive film 6 includes: the thin film transistor comprises a support 61, a thin film 62 and two electrodes 63, wherein the thin film 62 is positioned on the upper surface of the support 61, and the two electrodes 63 are simultaneously electrically connected with the thin film 62. The membrane 62 converts electrical energy into thermal energy after the two electrodes 63 are electrically conductive.

More specifically, the thermally conductive film 6 further includes: two silver paste coats 64, the two silver paste coats 64 respectively covering positions of both side edges of the upper surface of the film 62, the two silver paste coats 64 being parallel to each other and both extending from the front end to the rear end of the film 62. The thermally conductive film 6 having the above-described structure was divided into four rows and three columns of matrices, and resistance tests (unit: Ω) were performed on matrix points, and the test results are shown in table 1:

TABLE 1

Therefore, the silver paste coating 64 can enable the resistance distribution of matrix points on the film 62 to be uniform, when direct current is switched on, the heat conduction is also uniform, the temperature of each matrix point on the conductive film is close, the display effect of the product is uniform and consistent, and the condition of non-uniform display is avoided.

To sum up, the STN LCD screen that has above-mentioned structure can realize the normal demonstration in the ultra-low temperature environment on the one hand, and on the other hand can be even unanimous on the display effect, avoids having the uneven condition of demonstration.

The above-mentioned embodiments are merely preferred examples of the present invention, and do not limit the scope of the present invention, so all equivalent changes or modifications made by the structure, features and principles of the present invention should be included in the claims of the present invention.

Claims

1. An STN liquid crystal display capable of realizing ultra-low temperature display, the STN liquid crystal display comprising: go up the polaroid, go up ITO layer, liquid crystal layer, ITO layer and polaroid down, go up the polaroid go up the ITO layer the liquid crystal layer down the ITO layer with the polaroid is from last down laminating its characterized in that in proper order down: the STN LCD screen further comprises: and the heat conductive film is positioned below the lower polarizer, and the shape and the size of the heat conductive film are the same as those of the liquid crystal layer.

2. An STN liquid crystal display capable of realizing ultra-low temperature display according to claim 1, wherein: the liquid crystal layer includes: the liquid crystal display panel comprises a frame, a spacer and a plurality of liquid crystal molecules, wherein the spacer is positioned in the middle of the frame, and the liquid crystal molecules are embedded in the spacer and arranged in a matrix form.

3. An STN LCD capable of realizing ultra-low temperature display as claimed in claim 2, wherein: the shock insulator is a glass shock insulator or a plastic shock insulator.

4. An STN liquid crystal display capable of realizing ultra-low temperature display according to claim 1, wherein: the thermally conductive film includes: the thin film is positioned on the upper surface of the support, and the two electrodes are simultaneously electrically connected with the thin film.

5. An STN LCD capable of realizing ultra-low temperature display according to claim 4, wherein: the thermally conductive film further comprises: two silver thick liquid coatings, two silver thick liquid coatings cover respectively in the position of the both sides edge of film upper surface, and two silver thick liquid coatings all extend to the rear end from the front end of film.