CN114200706A - A liquid crystal screen with high heating efficiency and suitable for extremely low temperature environment - Google Patents

Abstract

The invention relates to a liquid crystal display screen which is high-efficiency in heating and suitable for extremely low temperature environment, comprising a color film substrate, a liquid crystal layer, an array substrate and frame sealing glue, wherein the color film substrate comprises a black matrix, a red color film layer, a green color film layer, a blue color film layer, a flat layer and an orientation layer, and further comprises a heating wire, a heating electrode and an insulating flat layer, wherein the heating wire is positioned below the black matrix and connected with the heating electrode, and the insulating flat layer is arranged between the heating wire and the black matrix; the length of the color film substrate in the liquid crystal screen is larger than that of the array substrate. The heating is walked the line and is located traditional black matrix below, and the width is less than black matrix linewidth, can not get into display pixel opening area, can not influence the LCD screen transmissivity, the line is walked to the while heating is located the box, heat-conduction efficiency improves, low temperature heating effect is better, greatly reduced low temperature heating consumption.

Description

Liquid crystal display screen with high heating efficiency and suitable for extremely low temperature environment

Technical Field

The invention relates to a liquid crystal display screen which is high in heating efficiency and suitable for an extremely low temperature environment, and belongs to the technical field of liquid crystal display screens.

Background

In the prior art, the normal working temperature range of the liquid crystal screen is-10-60 ℃, the liquid crystal screen can not normally display when the temperature is reduced to-40 ℃ or below, and the liquid crystal screen needs to be heated to ensure the normal display function. The traditional mode is that a piece of glass of surface coating ITO membrane is attached behind the LCD screen, binds the heating electrode at ITO membrane both ends, adds voltage for the heating electrode both ends, and the ITO membrane circular telegram is generated heat, and the heat passes through heat-conduction and transmits the liquid crystal display for the effect of heating the LCD screen.

The traditional mode of heating for the LCD screen not only can reduce the module transmissivity, still can increase the whole weight of module, and at present of the frivolous requirement of module, the traditional mode of heating for the LCD screen is more and more not conform to the development trend.

Disclosure of Invention

The invention provides a liquid crystal display screen which is high in heating efficiency and suitable for extremely low temperature environment, and aims to solve the problems that the existing liquid crystal display screen cannot work normally in low temperature environment, the external heating heat conduction efficiency is low, the transmittance is low, and the heating and display power consumption are high.

The technical solution of the invention is as follows: a liquid crystal display screen capable of heating efficiently and suitable for extremely low temperature environment comprises a color film substrate, an array substrate and frame sealing glue, wherein the color film substrate comprises a heating wire, a heating electrode, an insulating flat layer, a black matrix, a red film layer, a green film layer, a blue film layer, a flat layer and an orientation layer, the heating wire is positioned below the black matrix and connected with the heating electrode, and the insulating flat layer is arranged between the heating wire and the black matrix.

The line width of the heating wiring is smaller than the width of the black matrix, and the heating wiring does not enter the pixel opening area.

The heating wire material is metal, such as gold, copper or aluminum.

The insulating flat layer material is SiNx or SiOx.

The manufacturing method comprises the following steps:

1) manufacturing a heating wire on the color film substrate, and reserving a position bound by a heating electrode;

2) after the heating electrode is manufactured, coating an insulating flat layer, and reserving a position for binding the electrode;

3) then manufacturing a black matrix, a red color film layer, a green color film layer, a blue color film layer, a flat layer and an orientation layer, and reserving the position for binding the electrodes;

4) the heating electrode is bound to the color film substrate and connected with the heating wire.

The invention has the beneficial effects that: the heating wiring is manufactured on the color film glass substrate, and the heating function is integrated in the liquid crystal display box, so that the heat conduction efficiency is improved, the heating power consumption is reduced, and the module weight is reduced. According to the invention, through the layout design of the heating wires, the heating wires are manufactured below the black matrix, the transmittance of the liquid crystal screen is not influenced, and the backlight power consumption is saved compared with the traditional mode of compounding and heating glass behind the liquid crystal screen.

Drawings

FIG. 1 is a schematic diagram of a conventional LCD panel.

FIG. 2 is a schematic diagram of a liquid crystal display panel of the present embodiment.

Fig. 3 illustrates a conventional heating scheme.

Fig. 4 shows the structure of each layer of the conventional color film substrate.

Fig. 5 shows the structure of each layer of the color film substrate.

Fig. 6 shows a process flow for manufacturing a conventional color film substrate.

Fig. 7 shows a process flow for manufacturing a color film substrate.

In the figure, 1-1 is a color film substrate; 1-2 is frame sealing glue; 1-3 is an array substrate; 1-4 is a sealing tape; 1-5 are heating glass ITO layers; 1-6 are heating glass substrates; 1-7 is a liquid crystal molecular layer;

2-1 is a color film substrate; 2-2 is a black matrix; 2-3 is blue color resistance; 2-4 is green color resistance; 2-5 is red color resistance; 2-6 is a planarization layer; 2-7 are orientation layers;

3-1 is a color film glass substrate; 3-2. black matrix; 3-3 is blue color resistance; 3-4 is green color resistance; 3-5 is red color resistance; 3-6 is a planarization layer; 3-7 are alignment layers; 3-8 are heating wires; 3-9 are insulating planarization layers.

Detailed Description

A liquid crystal display screen which is efficient in heating and suitable for extremely low temperature environment integrates a heating function in a liquid crystal display screen box, and heating wiring is manufactured on a color film substrate, so that the heating efficiency can be improved, and the power consumption required by heating is reduced.

The heating wire is manufactured on the color film substrate, so that the phenomenon that the wire and the array substrate generate differential pressure interference for display due to voltage coupling is avoided.

The color film substrate where the heating wire is located is wider than the array substrate, and the position bound by the heating electrode is reserved.

The heating wires are arranged below the black matrix, the line width is smaller than that of the original black matrix, and the transmittance is not affected.

The heating wiring material is metal, and is not limited to gold, copper or aluminum with good heat conduction effect.

The heating wiring film thickness can be adjusted according to the heating effect of the liquid crystal display, the heating wiring film thickness is large, the heating wiring resistance value is small, and the heating effect is good.

And after the heating electrode is manufactured, coating an insulating flat layer, and reserving the position for binding the electrode.

After the heating routing and the insulating flat layer are manufactured, the color film substrate is manufactured into a black matrix, red, green and blue color film layers, a flat layer and an orientation layer.

The technical scheme of the invention is further explained by combining the attached drawings

As shown in fig. 1 and 2, compared with the conventional liquid crystal display, the length of the color film substrate of the liquid crystal display is longer than that of the array substrate, and the reason for the design is to reserve the binding position of the heating electrode.

As shown in fig. 3, the liquid crystal display panel of the conventional method includes a color film substrate 1-1, frame sealing glue 1-2, an array substrate 1-3, a sealing tape 1-4, a heating glass ITO layer 1-5, a heating glass substrate 1-6, and a liquid crystal molecule layer 1-7; the liquid crystal screen is heated by attaching heating glass with an ITO conductive film plated on the surface behind the liquid crystal screen, the method is low in heat conduction efficiency, the ITO conductive film plated glass affects the display of the whole transmittance, and the backlight power consumption and the heating power consumption can be increased.

As shown in fig. 4, the conventional color filter substrate structure includes a color filter glass substrate 2-1, a black matrix 2-2, red, green, and blue color filter layers 2-3-2-6, a planarization layer 2-6, and an orientation layer 2-7. The manufacturing process of the conventional color filter substrate is shown in fig. 6.

As shown in fig. 5, the color film substrate structure of the present invention includes a color film glass substrate 3-1, a heating trace 3-8, an insulating planarization layer 3-9, a black matrix 3-2, red, green, and blue color film layers 3-5, a planarization layer 3-6, and an orientation layer 3-7. Heating wires and an insulating flat layer are manufactured on the color film substrate, so that the phenomenon that light leakage or abnormal display occurs due to voltage difference generated by voltage coupling with wires on the array substrate can be avoided. The manufacturing process of the color film substrate is shown in fig. 7.

The working mode of the color film substrate is that heating voltage is externally connected to two ends of the heating electrode, when the temperature sensor tests that the temperature of the liquid crystal screen is lower than minus 10 ℃, the heating function of the liquid crystal screen is started, the temperature of the liquid crystal screen is increased, and when the temperature sensor tests that the temperature of the liquid crystal screen is higher than minus 10 ℃, the heating function of the liquid crystal screen is closed. By the working mode, the normal work of the liquid crystal screen in a low-temperature environment is ensured.

Claims (6)

1. A liquid crystal display screen capable of being heated efficiently and suitable for extremely low temperature environment comprises a color film substrate, a liquid crystal layer, an array substrate and frame sealing glue, wherein the color film substrate comprises a black matrix, a red color film layer, a green color film layer, a blue color film layer, a flat layer and an orientation layer; the length of the color film substrate in the liquid crystal screen is larger than that of the array substrate.

2. The liquid crystal display panel of claim 1, wherein the width of the heating trace line is smaller than the width of the black matrix, and does not enter the pixel opening area.

3. The liquid crystal display panel of claim 1, wherein the heating wire is made of metal.

4. A liquid crystal display panel as claimed in claim 3, wherein the heating wire is made of gold, copper or aluminum.

5. The liquid crystal display panel of claim 1, wherein the insulating planarization layer is made of SiNx or SiOx.

6. The method as claimed in claim 1, wherein the method comprises the following steps:

1) manufacturing a heating wire on the color film substrate, and reserving a position bound by a heating electrode;

2) after the heating electrode is manufactured, coating an insulating flat layer, and reserving a position for binding the electrode;

3) and then manufacturing a black matrix, a red film layer, a green film layer, a blue film layer, a flat layer and an orientation layer, and reserving the position for binding the electrodes.

4) The heating electrode is bound to the color film substrate and connected with the heating wire.

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