Liquid crystal display

FIELD: physics, computing.

SUBSTANCE: liquidcrystal display consisting of pixels, each of which includes a light-emitting (LE) part and a reflective light-modulating (LM) part, which are spatially separated and adjoin each other with their lateral sides; both display parts contain the first and second common substrates, as well as components designed as layers, namely, the LE part contains the following components located in series one under another, between the first and second substrates: a cathode located on the lower side of the first substrate; a hole conduction layer; a light-emitting layer; an electronic conduction layer; an anode; a transparent insulating layer between the anode and the second substrate. The reflective LM part contains the following components located in series one under another between the first and second substrates: the first electrode located on the lower side of the first substrate; the first passivating layer; the first alignment layer; a light-modulating layer; the second alignment layer; the second passivating layer; a reflective layer; the second electrode between the reflective layer and the second substrate. The LM part contains a compensatory layer located on the upper side of the first substrate and designed so as to provide for phase compensation, as well as a polariser located on the compensatory layer; the light-emitting layer in the LE part and the light-modulating layer in the LM part are made of the same electroluminescent liquidcrystal (LC) material, the alignment layers are designed so as to provide for the alignment of LC molecules, and the passivating layers are designed so as to decelerate the aging of the LC material.

EFFECT: development of LC display with enhanced performance and decelerated aging of LC material.

8 cl, 1 dwg

 

The invention relates to the field of electronics, and in particular to liquid crystal displays and methods for their manufacture, and can be used as display for mobile phone, PDA, laptop, and other similar devices.

Currently known light-emitting (C) display, transflective light modulating (CM) displays consisting of reflective and transmissive light modulating regions, as well as hybrid light modulating light-emitting display comprising a reflective CM and C regions.

Light-emitting displays (see for example, U.S. patent No. 5684365 [1]) contain the light source, the intensity of which varies under the action of the control voltage. The disadvantage of light-emitting displays is poor visibility of the image in bright ambient illumination (e.g., daylight).

Transflective light modulating displays (see for example, U.S. patent No. 6295109 [2]) contain both reflective and transmissive light region, and therefore deprived of the disadvantage mentioned light-emitting displays. On the other hand, transflective light modulating displays contain the backlight, and their effectiveness in the mode of transmission is less than 5%.

Closest to the claimed invention is a hybrid light modulating light-emitting display (see the proposed patent application U.S. No. 2003/0052869 [3]), which contains SM and SI parts at the same time SEE the part of this display is made on the basis of reflective CM LCD display, and the C part is made on the basis of organic light-emitting diode. A distinctive feature of the display is the location of the elements of CM and C parts between the two substrates. This display is selected as the prototype of the claimed invention.

The disadvantage of the prototype is the complexity of the production technology of display due to the use of different electroluminescent LCD materials in CM and C parts of the display as light-emitting and light modulating materials.

Objective of the claimed invention is to provide a liquid crystal display having a design that can simplify the production technology of the display.

The technical result is achieved by creating a liquid crystal display, which consists of pixels, each of which includes SI and reflective CM parts that are spatially separated and adjacent the sides to each other, and both of the display contain the first and the second common substrate, as well as elements made in the form of layers, namely

C part contains the following elements, arranged sequentially one after the other, between the first and second substrates:

the cathode, on th the th on the bottom side of the first substrate;

- layer with p-type conductivity;

light - emitting layer;

layer with electron conductivity;

- anode;

- transparent insulating layer located between the anode and the second substrate.

Reflective CM part contains the following elements, arranged sequentially one after the other, between the first and second substrates:

the first electrode is located on the bottom side of the first substrate;

the first passivating layer;

the first orientation layer;

- the light modulating layer;

the second guiding layer;

the second passivating layer;

- reflecting layer;

the second electrode is located between the reflective layer and the second substrate.

In addition, SEE part contains a compensating layer located on the upper side of the first substrate and configured to compensate for phase and a polarizer located on the compensative layer, and the light emitting layer in the SI part and the light modulating layer in CM parts are made from the same electroluminescent liquid crystal (LC) material with the orienting layers made with the possibility of orientation of the molecules of the LCD, and piscivorous layers with the possibility of slowing down the aging of the LCD material.

For the operation of the display is essential that the ratio of the size of the reflective CM part to the size of the frames C were in the range between 10:1 and 1:1.

For the operation of the display it is important that the substrates were flexible.

For the operation of the display is essential that the substrates were made of a material selected from the group comprising glass, polymer, and metal.

For the operation of the display it is important that one of the substrates is made of polymer, and the second from a material selected from the group comprising glass, polymer, and metal.

For the operation of the display it is important that one of the substrates was made of glass, and the second polymer or metal.

For the operation of the display it is important that SI and reflecting CM part had a different shape.

For the operation of the display is essential that the liquid crystal material in the C part was polymerized.

The technical result of the claimed invention is to simplify the production technology of the LCD display due to the manufacturing of light-emitting and the light modulating element in the light modulating (CM) and light (C) parts of the display from the same electroluminescent liquid crystal material.

For a better understanding of the claimed invention the following is a detailed description with the appropriate drawings.

The drawing shows a diagram of a pixel of the liquid crystal display (side view), made according to the invention.

smotrim more the claimed invention (Figure 1). Each element of the liquid crystal (LCD) display, pixel, space is divided into two parts - the-SEA part 1 and the reflective SEE part 2. These parts form a pixel adjacent to each other side by side. Both parts of the display contain General: the first cover 3 and second substrate 4, and the elements made in the form of layers.

C part 1 contains the following elements, arranged sequentially one after the other, between the first substrate 3 and second substrate 4 is:

the cathode 5, located on the lower side of the first substrate 3,

layer 6 with hole conductivity,

light - emitting layer 7,

layer 8 with electronic conductivity,

the anode 9,

- transparent insulating layer 10 located between the anode 9 and the second substrate 4.

Reflective CM part 2 contains the following elements, arranged sequentially one after the other, between the first substrate 3 and second substrate 4 is:

the first electrode 11 located on the bottom side of the first substrate 3;

the first passivating layer 12,

the first guide layer 13,

- the light modulating layer 14,

the second guide layer 15,

the second passivating layer 16,

- reflecting layer 17,

the second electrode 18 located between the reflective layer 17 and the second substrate 4.

CM part 4 also includes a compensating layer 19 located on the top of the side of the first substrate 3 and is configured to compensate for phase and the polarizer 20, located on the compensative layer 19.

The difference between the claimed invention is that the light-emitting layer 7 in C part 1 and the light modulating layer 14 CM part 2 made of the same electroluminescent liquid crystal (LC) material with the orientation layers 13 and 15 is arranged to Orient the molecules of the LCD material, and piscivorous layers 12 and 16 with the possibility of slowing down the aging of the LCD material.

The display works as follows. Reflective CM part 2 reflects external light, and the B part 1 emits light (the rays of light indicated by the arrows in figure 1). Thus, in the absence of external lighting C part 1 provides an effective contribution to the mapping information. When there is external light (daylight), is displaying information using both the reflected and emitted light, while the LCD material in CM part 2 is used for electro-optic modulation of the reflected light, whereas in C, part 1, he is a light-emitting material. CM and C of the display can be separated by an insulating layer 21.

Although the above embodiment of the invention has been set forth to illustrate the present invention, the experts it is clear that various modifications, additions and substitutions are not you Odysee of the scope and meaning of the present invention, disclosed in the accompanying claims.

1. Liquid crystal display comprising pixels, each of which includes a light-emitting (SI) and the reflective light modulating (CM) parts, which are spatially separated and adjacent the sides to each other, and both of the display contain the first and the second common substrate, as well as elements made in the form of layers, namely a C-section contains the following items sequentially one after another between the first and second substrates:

the cathode is located on the bottom side of the first substrate;

layer with p-type conductivity;

light-emitting layer;

layer with electron conductivity;

anode;

a transparent insulating layer located between the anode and the second substrate,

when this reflective CM-part contains the following elements, arranged sequentially one after another between the first and second substrates:

the first electrode is located on the bottom side of the first substrate;

the first passivating layer;

the first orientation layer;

the light modulating layer;

the second guiding layer;

the second passivating layer;

a reflective layer;

the second electrode is located between the reflecting is at the forefront and the second substrate;

in addition, SEE part includes a compensating layer located on the upper side of the first substrate and configured to compensate for phase and a polarizer located on the compensative layer, and the light emitting layer in the C-part and the light modulating layer in CM-parts are made from the same electroluminescent liquid crystal (LC) material with the orienting layers made with the possibility of orientation of the molecules of the LCD, and piscivorous layers with the possibility of slowing down the aging of the LCD material.

2. The display according to claim 1, characterized in that the ratio of the reflective CM-portion to the size of SI is in the range between 10:1 and 1:1.

3. The display according to claim 1, wherein the substrate is flexible.

4. The display according to claim 1, wherein the substrate is made of a material selected from the group comprising glass, polymer, and metal.

5. The display according to claim 1, wherein one of the substrates made of polymer, and the second from a material selected from the group comprising glass, polymer, and metal.

6. The display according to claim 1, wherein one of the substrates made of glass, and the second polymer or metal.

7. The display according to claim 1, characterized in that the SI - reflecting SEE-parts have a different shape.

8. The display according to claim 1, characterized in that closeconnections material in C-part polymerized.



 

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