CN100349045C - Dual-sided LCD monitor - Google Patents

Abstract

A double-sided LCD has a first screen area and a second screen area, both of which include at least more than one screen, and the structure at least includes: a first substrate; a pixel electrode pattern formed on the first substrate; a second substrate facing the first substrate; the reflecting layer is positioned on one side of the second substrate of the second screen area; a filter formed on the second substrate and the reflective layer; a common electrode formed on the color filter; a liquid crystal layer formed between the first substrate and the second substrate; and a light emitting device disposed outside the first substrate.

Description

Dual-sided LCD monitor

technical field

The present invention relates to a structure of a liquid crystal display (LCD), and in particular to a dual display liquid crystal display capable of displaying data on front and back panels.

Background technique

Currently, liquid crystal displays have been widely used in display screens of mobile communication products such as personal digital assistants (PDAs) and mobile phones due to their advantages such as low power consumption, small size, and low voltage driving.

However, with the progress of the times, many products need to display data on the front and back sides of the display screen. For example, many foldable mobile phones (folder type mobile phone) on the market have a liquid crystal display screen on the inside and outside of the outer cover respectively.

Since it is known that two independent liquid crystal displays are used to display the data on the front and back sides respectively when manufacturing such products, the conventional method must use two sets of electronic devices to drive the above two independent liquid crystal displays. , As a result, not only the cost is increased, but also the thickness of the product is increased, which does not conform to the trend of light, thin and small products.

Contents of the invention

In view of this, the main purpose of the present invention is to provide a double-sided liquid crystal display.

Another object of the present invention is to provide a double-sided liquid crystal display that requires only one liquid crystal layer.

To achieve the above purpose, the present invention discloses a liquid crystal display with double-sided display, which has a first screen area and a second screen area. Both the first screen area and the second screen area include at least one screen. The structure at least includes: a first substrate; a pixel electrode pattern formed on the first substrate; a second substrate facing the first substrate; a reflective layer formed on the second substrate located in the second screen area one side of the filter; a filter formed on the second substrate and the reflective layer; a common electrode formed on the filter; a liquid crystal layer formed between the first substrate and the second substrate; and a The light emitting device is arranged on one side of the first base.

Description of drawings

FIG. 1 is a schematic diagram showing the structure of an LCD with double-sided display according to the present invention.

Description of figure number

100 - the first basis;

101 - the first screen area;

102 - the second screen area;

110-transparent insulating layer;

120-pixel electrode pattern;

150-liquid crystal layer;

160-common electrode;

170-filter;

180 - reflective layer;

190 - second base;

200 - lighting device;

201 - penetrating light;

202 - Reflected light.

Detailed ways

First, please refer to FIG. 1 , which is used to illustrate the structure of the double-sided display LCD of the present invention. As shown in Figure 1, this LCD structure has:

The first screen area 101 and the second screen area 102, wherein the first and the second screen area 101, 102 all include at least one screen, the first screen area 101 can be regarded as the main screen area (main display area), And the second screen area 102 can be regarded as the secondary screen area (auxiliary display area);

A first substrate 100 is a thin film transistor array glass substrate (TFTs array glass substrate);

A transparent insulating layer 110 can be formed on the inner side of the above-mentioned first substrate 100, and its material can be an organic material;

A pixel electrode pattern (pattern) 120 is formed on the above-mentioned transparent insulating layer 110, and its manufacturing method can be: first deposit a transparent conductive layer (not shown) on the transparent insulating layer 110, the material of this transparent conductive layer It can be Indium Tin Oxide (ITO) or Indium Zinc Oxide (IZO). Afterwards, the desired pixel electrode pattern 120 can be formed through a lithographic etching process;

A second substrate 190, the second substrate 190 is opposite to the above-mentioned first substrate 100, and its material can be glass, or other suitable materials;

A reflective layer (reflective layer) 180 can be selectively positioned on the inside or outside of the second base 190 of the second screen area 102. In this embodiment, the reflective layer is positioned inside the second base 190 of the second screen area 102 , wherein the reflective layer 180 can be made of aluminum or silver, and its preferred thickness is about 0.1 μm;

A color filter (color filter) 170 is located on the second substrate 190 and the reflective layer 180, wherein the color filter 170 can selectively use a color filter or a black and white filter. In this preferred embodiment, is the use of color filters;

A common electrode (common electrode) 160 is located on the filter 170, wherein the material of the common electrode 160 can be indium tin oxide (ITO) or indium zinc oxide (IZO);

A liquid crystal layer 150 is formed between the first substrate 100 and the second substrate 190 by directly injecting liquid crystal material between the first substrate 100 and the second substrate 190 to form the desired liquid crystal layer 150;

A light emitting device 200 is located on the outer side of the first substrate 100 . When the light emitting device 200 corresponds to the first screen area 101 and the second screen area 102 at the same time, the light emitting device 200 can be regarded as the backlight of the first screen area 101 and the front light of the second screen area 102 at the same time. ). However, when the light emitting device 200 only corresponds to the first screen area 101 , the light emitting device 200 can only be used as a backlight for the first screen area 101 . In addition, in a preferred embodiment, the light emitting device 200 includes a cold cathode fluorescent tube and a light guide panel.

That is to say, in the liquid crystal display of double-sided display of the present invention, wherein the liquid crystal display positioned in the first screen area 101 is a transmissive liquid crystal display (symbol 201 is to represent penetrating light), and the liquid crystal display positioned in the second screen area The liquid crystal display in 102 is a reflective liquid crystal display (symbol 202 represents reflected light). In addition, it should be emphasized that the first screen area 101 and the second screen area 102 can be adjacent or non-adjacent according to the mechanical design of the liquid crystal display.

Through the LCD structure disclosed in the present invention, the same set of LCD can be used to display the data on the front and back sides, so only one set of electronic devices is needed to drive the above-mentioned double-sided liquid crystal display, which not only reduces the cost, but also reduces the number of products. The thickness is in line with the trend of thin, short and small products.

Claims (10)

1. A liquid crystal display with double-sided display, having a first screen area and a second screen area, the first screen area and the second screen area all include at least one screen, and its structure at least includes: a first base; a pixel electrode pattern formed on the first substrate; a second base opposite to the first base; a reflective layer formed on one side of the second substrate located in the second screen area; a filter formed on the second substrate; a common electrode formed on the filter; a liquid crystal layer formed between the first substrate and the second substrate; and A light emitting device is arranged on the outside of the first base. 2. The double-sided liquid crystal display according to claim 1, wherein the first substrate is a thin film transistor array substrate. 3. The double-sided liquid crystal display according to claim 1, wherein the pixel electrode pattern and the common electrode are made of indium tin oxide or indium zinc oxide. 4. The liquid crystal display with double-sided display according to claim 1, wherein the material of the reflective layer is aluminum or silver, and the reflective layer is located inside or outside the second substrate. 5. The double-sided liquid crystal display according to claim 1, wherein the light emitting device is located in the first screen area. 6. The liquid crystal display with double-sided display according to claim 1, wherein the light emitting device is located in the first screen area and the second screen area at the same time. 7. The liquid crystal display with double-sided display according to claim 1, wherein the liquid crystal display located in the first screen area is a transmissive liquid crystal display. 8. The liquid crystal display with double-sided display according to claim 1, wherein the liquid crystal display located in the second screen area is a reflective liquid crystal display. 9. The liquid crystal display with double-sided display according to claim 1, wherein the first screen area and the second screen area are adjacent or non-adjacent. 10. The double-sided liquid crystal display according to claim 1, wherein the filter is a color filter or a black and white filter.

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